American theoretical physicist and cosmologist
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The Inflationary Universe Theory proposes that the universe underwent an exponential expansion in the first fraction of a second after the Big Bang. This rapid inflation stretched space-time itself, smoothing out any irregularities and setting the stage for the universe as we know it today. This theory was first put forward by physicist Alan Guth in 1980, and it has since become a cornerstone of modern cosmology.
Der Urknall war der Anfang von Allem. Oder doch nicht? Die Theorie der ewigen Inflation sagt, dass ständig Universen entstehen und unseres nur eines davon ist. Was das bedeutet, erfahrt ihr in der neuen Folge der Sternengeschichten. Wer den Podcast finanziell unterstützen möchte, kann das hier tun: Mit PayPal (https://www.paypal.me/florianfreistetter), Patreon (https://www.patreon.com/sternengeschichten) oder Steady (https://steadyhq.com/sternengeschichten)
Can you be a serious scientist and believe in God, and even believe in miracles? Tom Rudelius never thought much about God until his brother, a new convert to Christianity, challenged him to explore faith. Tom, now a rising young theoretical physicist based at Durham University in the UK made a journey to unexpected faith, through subsequent doubt and anxiety, and ultimately to a firmer, life-transforming allegiance to Jesus. Phil and Tom wrestle with creation and cosmic origins, the problem of evil and suffering, the compatibility of miracles with science and the plausibility of Jesus' resurrection. Phil Halper is an atheist, and Youtuber who's interviewed leading physicists from Stephen Hawking, Sir Roger Penrose to Alan Guth for his YouTube series Before the Big Bang. He is a Fellow of the Royal Astronomical Society and published several papers in peer reviewed journals on the Problem of Animal Suffering and has a new film on the subject which features other leading atheists such as Peter Singer and Alex O'Connor. Taking on Phil is Tom Rudelius author of 'Chasing proof, finding science'. Fresh from post doctoral research at UC Berkeley Tom is now Assistant Professor, Mathematical & Theoretical Particle Physics at Durham University, UK. Tom completed his undergraduate work at Cornell, earned a doctorate in physics at Harvard, and has conducted postdoctoral research at the Institute for Advanced Study in Princeton, New Jersey. His research focuses on string theory, quantum field theory, and early universe cosmology. Phil Halper https://www.youtube.com/@skydivephil Tom Rudelius Website | Twitter | Instagram • Subscribe to the Unbelievable? podcast: https://pod.link/267142101 • More shows, free eBook & newsletter: https://premierunbelievable.com • For live events: http://www.unbelievable.live • For online learning: https://www.premierunbelievable.com/training • Support us in the USA: http://www.premierinsight.org/unbelievableshow • Support us in the rest of the world: https://www.premierunbelievable.com/donate
Das Universum ist eines der Dinge, die von Zeit zu Zeit einfach passieren. Und das ist nicht einfach nur Gerede, sondern echte Wissenschaft! Mehr zur Entstehung des Universums aus dem Nichts erfahrt ihr in der neuen Folge der Sternengeschichten. Wer den Podcast finanziell unterstützen möchte, kann das hier tun: Mit PayPal (https://www.paypal.me/florianfreistetter), Patreon (https://www.patreon.com/sternengeschichten) oder Steady (https://steadyhq.com/sternengeschichten)
John Preskill is the Richard P. Feynman Professor of Physics at Caltech, a title many physicists would cherish. He is widely known in the field for his work as a theoretical physicist spearheading the field of Quantum Computing, where he is Director of Caltech's Institute for Quantum Information and Matter, but his expertise and contributions span a far broader spectrum of topics. His background is in theoretical particle physics, gravitation, and cosmology. As a graduate student, his seminal work on the cosmological implications of magnetic monopoles in Grand Unified Theories helped lead Alan Guth to develop his theory of Inflationary Cosmology, in part to resolve a cosmological conundrum John first elucidated. Since that time, John has explored condensed matter systems and the physics of black holes, made a famous bet with Stephen Hawking, and coined the term “quantum supremacy”, to describe a metric that might reveal the first time a quantum computer resolved a problem that a classical computer could not resolve in a feasible human timescale. As Director the Caltech Institute, John leads one of the most vibrant programs exploring quantum information and quantum computation, and I was happy to have the opportunity to connect again with my old friend and colleague to discuss this rapidly evolving field, about which so much is written in the popular press, and which may impact on all of our lives in the 21st century. In our discussion we tried to separate the wheat from the chaff, to discuss the future of the field, its current state, and challenges and opportunities. In addition, we discussed his own scientific career and the physics areas that have excited him, and what helped drive him to become a physicist in the first place. It was a fascinating discussion and I am sure you will be both entertained, and enlightened. As always, an ad-free video version of this podcast is also available to paid Critical Mass subscribers. Your subscriptions support the non-profit Origins Project Foundation, which produces the podcast. The audio version is available free on the Critical Mass site and on all podcast sites, and the video version will also be available on the Origins Project Youtube channel as well. Get full access to Critical Mass at lawrencekrauss.substack.com/subscribe
Teoría de la Inflación Cósmica La teoría de la inflación, desarrollada por Alan Guth, Andrei Linde, Paul Steinhardt y Andy Albrecht, ofrece soluciones a las “Tres Incongruencias” del Big Bang y varias otras preguntas abiertas en cosmología. Propone un período de expansión extremadamente rápida, de forma exponencial del universo; antes de la expansión más gradual producida por el Big Bang. Tiempo durante el cual la densidad de energía del universo, estuvo dominada por una constante cosmológica denominada tipo de energía del vacío, que luego decayó para producir la materia y radiación que llenan el universo hoy en día. La inflación fue rápida y fuerte. ¡Aumentó el tamaño lineal del universo en solo una pequeña fracción de segundo! La inflación ahora se considera una extensión de la teoría del Big Bang, ya que explica muy bien los acertijos anteriores. Al tiempo que conserva el paradigma básico de un universo en expansión homogéneo. Además, la teoría de la inflación vincula ideas importantes de la física moderna, como la ruptura de la simetría y las transiciones de fase, con la cosmología.… Prestemos oídos a la crónica …
In 1979 Alan Guth, then a postdoc at Cornell, made what is perhaps the most important contribution to our theoretical understanding of the evolution of the Universe in the past half century. His realization that the early universe could have undergone a brief period of what he dubbed as “Inflation” provided the first and to date the only explanation of the large scale properties of the Universe compatible with observations, and based on well-defined, calculable, microphysical physics principles. Since that time, Inflation has become the paradigm of modern cosmology, and it made fundamental predictions about other observables in cosmology that have since been validated by observations of the Cosmo Microwave Background Radiation. I was particularly happy to have Alan on the podcast for a variety of reasons. First and foremost he is a remarkably clear and precise expositor of science. Second, his own history in the field provides, I think, a good object lesson for young scientists who might be struggling. Third, it was important that he provide a counterpoint to the discussion I previously had with Roger Penrose, who has presented his own alternative to Inflation that is much less well-defined at this time. Finally, Alan is a lovely human being, and both a friend, and in some sense a mentor to me (having served on my thesis examination committee when he first came to MIT, and having been a colleague and co-author with me on scientific papers). I hope you enjoy what I found to be a very enlightening discussion about science, and a revealing window into the thoughts of one of the most important cosmologists currently alive today. The audio version is free to all on this Critical Mass site. An ad-free video is available on Critical mass for paid subscribers only, a video version with advertisements is available separately on the Origins Project Foundation YouTube Channel. Get full access to Critical Mass at lawrencekrauss.substack.com/subscribe
COSMOS - Of what is reality made? What are the most basic building blocks from which the cosmos is constructed? Particles? Mass-Energy? Forces? Fields? A new candidate is ‘Information'—‘IT from BIT'. Featuring Seth Lloyd, Sean Carroll, Raphael Bousso, Alan Guth, and Christof Koch.
Learn about the exciting promise of quantum computing and how it may solve problems in fundamental physics. Join my mailing list to get slides from this conversation: briankeating.com. We went deep…discussing Artificial Intelligence, the simulation hypothesis, lessons from Richard Feynman and more! You don’t want to miss his answers to my patented Thrilling Three final questions! John Preskill is the Richard P. Feynman Professor of Theoretical Physics at the California Institute of Technology, where he is also the Director of the Institute for Quantum Information and Matter. He is one of the most prolific and influential scientists of our time. Preskill is a leading scientist in the field of quantum information science and quantum computation, and he is known for coining the term “quantum supremacy.” Preskill studied magnetic monopoles in Grand Unified Theories. This work pointed out serious flaws in the then-current cosmological models, a problem which was later addressed by Alan Guth and others by proposing the idea of cosmic inflation. He’s the Director of the Institute for Quantum Information at Caltech. He is known for coining the term “Quantum Supremacy” in a 2012 paper. Preskill has achieved some notoriety in the popular press as a party to a number of bets involving fellow theoretical physicists Stephen Hawking and Kip Thorne. Preskill was elected a member of the National Academy of Sciences in 2014. Watch my most popular videos: Jim Simons, the World’s Smartest Billionaire Bill Perkins: DIE WITH ZERO: Patrick Bet-David YOUR NEXT FIVE MOVES Sheldon Glashow Sir Roger Penrose, Nobel Prize winner Frank Wilczek Jill Tarter Eric Weinstein Sir Roger Penrose Juan Maldacena’s First Podcast Interview Sara Seager Venus Life Noam Chomsky Sabine Hossenfelder Sarah Scoles Stephen Wolfram ♂️ Find me on Twitter at https://twitter.com/DrBrianKeating Find me on Instagram at https://instagram.com/DrBrianKeating Buy my book LOSING THE NOBEL PRIZE: http://amzn.to/2sa5UpA Subscribe for more great content https://www.youtube.com/DrBrianKeating?sub_confirmation=1 ✍️Detailed Blog posts here: https://briankeating.com/blog.php Learn more about your ad choices. Visit megaphone.fm/adchoices
Part 1 of 2 Learn about the exciting promise of quantum computing and how it may solve problems in fundamental physics. Join my mailing list to get slides from this conversation: briankeating.com. We went deep…discussing Artificial Intelligence, the simulation hypothesis, lessons from Richard Feynman and more! You don’t want to miss his answers to my patented Thrilling Three final questions! John Preskill is the Richard P. Feynman Professor of Theoretical Physics at the California Institute of Technology, where he is also the Director of the Institute for Quantum Information and Matter. He is one of the most prolific and influential scientists of our time. Preskill is a leading scientist in the field of quantum information science and quantum computation, and he is known for coining the term “quantum supremacy.” Preskill studied magnetic monopoles in Grand Unified Theories. This work pointed out serious flaws in the then-current cosmological models, a problem which was later addressed by Alan Guth and others by proposing the idea of cosmic inflation. He’s the Director of the Institute for Quantum Information at Caltech. He is known for coining the term “Quantum Supremacy” in a 2012 paper. Preskill has achieved some notoriety in the popular press as a party to a number of bets involving fellow theoretical physicists Stephen Hawking and Kip Thorne. Preskill was elected a member of the National Academy of Sciences in 2014. Watch my most popular videos: Jim Simons, the World’s Smartest Billionaire Bill Perkins: DIE WITH ZERO: Patrick Bet-David YOUR NEXT FIVE MOVES Sheldon Glashow Sir Roger Penrose, Nobel Prize winner Frank Wilczek Jill Tarter Eric Weinstein Sir Roger Penrose Juan Maldacena’s First Podcast Interview Sara Seager Venus Life Noam Chomsky Sabine Hossenfelder Sarah Scoles Stephen Wolfram ♂️ Find me on Twitter at https://twitter.com/DrBrianKeating Find me on Instagram at https://instagram.com/DrBrianKeating Buy my book LOSING THE NOBEL PRIZE: http://amzn.to/2sa5UpA Subscribe for more great content https://www.youtube.com/DrBrianKeating?sub_confirmation=1 ✍️Detailed Blog posts Learn more about your ad choices. Visit megaphone.fm/adchoices
COSMOS - Everything in the universe has a beginning, but how can the universe as a whole have a start date? Does a universal commencement make sense? What would it possibly mean? Featuring Martin Rees, Wendy Freedman, Alan Guth, George Smoot and Alexander Vilenkin.
Why Science Does Not Disprove God by Amir Aczel Dennis Prager talks to the author. The renowned science writer, mathematician, and bestselling author of Fermat's Last Theorem masterfully refutes the overreaching claims the "New Atheists," providing millions of educated believers with a clear, engaging explanation of what science really says, how there's still much space for the Divine in the universe, and why faith in both God and empirical science are not mutually exclusive.A highly publicized coterie of scientists and thinkers, including Richard Dawkins, the late Christopher Hitchens, and Lawrence Krauss, have vehemently contended that breakthroughs in modern science have disproven the existence of God, asserting that we must accept that the creation of the universe came out of nothing, that religion is evil, that evolution fully explains the dazzling complexity of life, and more. In this much-needed book, science journalist Amir Aczel profoundly disagrees and conclusively demonstrates that science has not, as yet, provided any definitive proof refuting the existence of God.Why Science Does Not Disprove God is his brilliant and incisive analyses of the theories and findings of such titans as Albert Einstein, Roger Penrose, Alan Guth, and Charles Darwin, all of whose major breakthroughs leave open the possibility— and even the strong likelihood—of a Creator. Bolstering his argument, Aczel lucidly discourses on arcane aspects of physics to reveal how quantum theory, the anthropic principle, the fine-tuned dance of protons and quarks, the existence of anti-matter and the theory of parallel universes, also fail to disprove God.-------------------------------------------------------------------- Visit Pragertopia https://pragertopia.com/member/signup.php The first month is 99 cents. After the first month the cost is $7.50 per month. If you can afford to pay for only one podcast, this is the one we recommend. It is the best conservative radio show out there, period. ACU strongly recommends ALL ACU students and alumni subscribe to Pragertopia. Do it today! You can listen to Dennis from 9 a.m. to Noon (Pacific) Monday thru Friday, live on the Internet http://www.dennisprager.com/pages/listen ------------------------------------------------------------------------For a great archive of Prager University videos visit-https://www.youtube.com/user/PragerUniversity/featured Donate today to PragerU! http://l.prageru.com/2eB2p0hGet PragerU bonus content for free! https://www.prageru.com/bonus-contentDownload Pragerpedia on your iPhone or Android! 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For Students: http://l.prageru.com/2aozfkPJOIN our Educators Network! http://l.prageru.com/2aoz2y9 -------------------------------------------------------------------- The Rational Bible: Exodus by Dennis Prager NATIONAL BESTSELLER "Dennis Prager has put together one of the most stunning commentaries in modern times on the most profound document in human history. It's a must-read that every person, religious and non-religious, should buy and peruse every night before bed. It'll make you think harder, pray more ardently, and understand your civilization better." — Ben Shapiro, host of "The Ben Shapiro Show" "Dennis Prager’s commentary on Exodus will rank among the greatest modern Torah commentaries. That is how important I think it is. And I am clearly not alone... It might well be on its way to becoming the most widely read Torah commentary of our time—and by non-Jews as well as by Jews." — Rabbi Joseph Telushkin, bestselling author of Jewish Literacy Why do so many people think the Bible, the most influential book in world history, is outdated? Why do our friends and neighbors – and sometimes we ourselves – dismiss the Bible as irrelevant, irrational, immoral, or all of these things? This explanation of the Book of Exodus, the second book of the Bible, will demonstrate that the Bible is not only powerfully relevant to today’s issues, but completely consistent with rational thought. Do you think the Bible permitted the trans-Atlantic slave trade? You won’t after reading this book. Do you struggle to love your parents? If you do, you need this book. Do you doubt the existence of God because belief in God is “irrational?” This book will give you reason after reason to rethink your doubts. The title of this commentary is, “The Rational Bible” because its approach is entirely reason-based. The reader is never asked to accept anything on faith alone. As Prager says, “If something I write does not make rational sense, I have not done my job.” The Rational Bible is the fruit of Dennis Prager’s forty years of teaching the Bible to people of every faith, and no faith. On virtually every page, you will discover how the text relates to the contemporary world and to your life. His goal: to change your mind – and then change your life. Highly Recommended by ACU.Purchase his book at-https://www.amazon.com/Rational-Bible-Exodus-Dennis-Prager/dp/1621577724 The Rational Bible: Genesis by Dennis Prager USA Today bestsellerPublishers Weekly bestsellerWall Street Journal bestseller Many people today think the Bible, the most influential book in world history, is not only outdated but irrelevant, irrational, and even immoral. This explanation of the Book of Genesis, the first book of the Bible, demonstrates clearly and powerfully that the opposite is true. The Bible remains profoundly relevant—both to the great issues of our day and to each individual life. It is the greatest moral guide and source of wisdom ever written. Do you doubt the existence of God because you think believing in God is irrational? This book will give you many reasons to rethink your doubts. Do you think faith and science are in conflict? You won’t after reading this commentary on Genesis. Do you come from a dysfunctional family? It may comfort you to know that every family discussed in Genesis was highly dysfunctional! The title of this commentary is “The Rational Bible” because its approach is entirely reason-based. The reader is never asked to accept anything on faith alone. In Dennis Prager’s words, “If something I write is not rational, I have not done my job.”The Rational Bible is the fruit of Dennis Prager’s forty years of teaching the Bible—whose Hebrew grammar and vocabulary he has mastered—to people of every faith and no faith at all. On virtually every page, you will discover how the text relates to the contemporary world in general and to you personally. His goal: to change your mind—and, as a result, to change your life. Highly Recommended by ACU.Purchase his book at-https://www.amazon.com/Rational-Bible-Genesis-Dennis-Prager/dp/1621578984 -------------------------------------------------------------------- HELP ACU SPREAD THE WORD! Ways to subscribe to the American Conservative University PodcastClick here to subscribe via iTunesClick here to subscribe via RSSYou can also subscribe via StitcherIf you like this episode head on over to iTunes and kindly leave us a rating, a review and subscribe! People find us through our good reviews. 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Alan Guth is the man who put the bang in the Big Bang, when late one night he came up with the astonishing idea – astonishing even to him – that the universe grew from a fraction of an ounce into the entire cosmos in an incomprehensibly brief moment of time. His insight that night, the theory that became known as inflation, is now the foundation for ideas about the cosmos that are as astonishing as inflation itself, including the idea that an infinite number new universes are being created all the time. Support the show: https://www.aldacommunicationtraining.com/podcasts/
Slice of MIT: Stories from MIT Presented by the MIT Alumni Association
MIT professor Alan Guth ’69, PhD ’72 pioneered the theory of cosmic inflation: a period of rapid expansion that occurred a fraction of a second after the Big Bang. And he also supports the idea that our universe is just one of many in a much larger multiverse. “What we call the Big Bang Theory is really just a theory of the aftermath of some kind of a bang,” Guth says. “And inflation is a possible answer to what propelled this expansion. It's based on the idea that gravity itself can, under some circumstances, act as a repulsive force instead of an attractive force.” Read the transcript to the lecture on the Slice of MIT blog: https://alum.mit.edu/slice/podcast-inflationary-cosmology-our-universe-part-multiverse
In the late 1960's and early 1970's, several problems arose with the Big Bang Theory's attempt to explain certain aspects of the early universe. In 1979, Alan Guth worked out a solution to those known as the Inflationary Model that added a new layer of understanding of the physical processes that governed the earliest moments of the cosmos.
The Big Bang was a tremendous theory, but it had a few problems. In 1980 Alan Guth developed the revolutionary theory of cosmic inflation, and astronomers have been looking for evidence to this day.Support Universe Today Podcast
The Big Bang was a tremendous theory, but it had a few problems. In 1980 Alan Guth developed the revolutionary theory of cosmic inflation, and astronomers have been looking for evidence to this day.
What separates a good teacher from a great one? How are digital technologies challenging traditional teaching methods? And are there distinctions between top-notch science instructors and their counterparts in humanities or social science? Former poet laureate Robert Pinsky, Weisskopf Professor of Physics Alan Guth and MIT biology professor Hazel Sive–all honored teachers–will explore these issues with Literature professor and Communications Forum director emeritus David Thorburn. David Thorburn is an MIT Literature professor, director emeritus of the Communications Forum, and a past winner of MIT’s MacVicar award for exemplary contributions to undergraduate teaching. Robert Pinsky is a three-term US Poet Laureate. He is a recipient of the William Carlos Williams Award from the Poetry Society of America and a Lifetime Achievement Award from the PEN American Center. Alan Guth is MIT’s Victor F. Weisskopf Professor of Physics, pioneer of the inflationary model of the universe and recipient of the MacVicar award for exemplary contributions to undergraduate teaching. Hazel Sive is a biology professor at MIT, a member of the Whitehead Institute for Biomedical Research and a recipient of the MacVicar award for exemplary contributions to undergraduate teaching.
Alan Guth is working on a fairly typical research paper, when he accidentally makes a huge discovery about the origin of the universe. Alan H. Guth is the Victor F. Weisskopf Professor of Physics and a MacVicar Faculty Fellow at the Massachusetts Institute of Technology. Trained in particle theory at MIT, Guth held postdoc positions at Princeton, Columbia, Cornell, and the Stanford Linear Accelerator Center (SLAC) before returning to MIT as a faculty member in 1980. His work in cosmology began at Cornell, when Henry Tye persuaded him to study the production of magnetic monopoles in the early universe. Using standard assumptions, they found that far too many would be produced. Continuing this work at SLAC, Guth discovered that the magnetic monopole glut could be avoided by a new proposal which he called the inflationary universe. Guth is a member of the U.S. National Academy of Sciences and the American Academy of Arts and Sciences, and has been awarded the Franklin Medal for Physics, the Dirac Prize, the Gruber Cosmology Prize, the Isaac Newton Prize, the Fundamental Physics Prize, and the Kavli Prize for Astrophysics. Guth has written a popular-level book called "The Inflationary Universe: The Quest for a New Theory of Cosmic Origins" (1997). Learn more about your ad choices. Visit megaphone.fm/adchoices
In this interview we talk with Alan Guth, theoretical physicist, cosmologist, and one of the fathers of the theory of cosmic inflation. We talk about the early universe and the Big Bang, and why inflation is needed to understand some of their features. We also talk about BICEP2, the experiment that claimed to have found the imprints of gravitational waves produced during inflation (as of August 2015 the signal observed by BICEP2 seems to be due mostly to galactic dust, and this issue was already under consideration at the moment of this conversation). We then turn to how the mechanism of inflation could be realised, and how these realisations can be experimentally tested. Finally, we speak about string theory and how inflation can lead to the generation of a multiverse. This conversation was the basis of a piece of radio explaining inflation for the general public (sorry, in Spanish). You can find it here looking for "La Brújula de la Ciencia s03e36". This conversation took place during the ICHEP 2014 conference at Valencia (Spain) on July 9th 2014. We thank the organisers of ICHEP and professor Guth for helping us in arranging this meeting.
En este capítulo os hablamos del universo cuando era muy muy joven, y lo hacemos para contaros un episodio de su historia que aún estamos intentando aclarar, pero que muchos físicos sostienen que ocurrió: la inflación cósmica, un periodo en que el universo se expandió más rápido que la luz. Os hablamos de cuál es la forma más conveniente de entender la expansión del universo y por qué creemos que hubo una época en que esa expansión fue inusitadamente rápida. Lo hacemos con la ayuda de Alan Guth, el "padre" de esta teoría, que nos explica con sus propias palabras alguno de sus aspectos. Podéis encontrar la entrevista completa con Alan Guth (en inglés) en el pódcast "Entrevistas de Alberto Aparici". También podéis encontrar otros episodios sobre cosmología, el Big Bang y el universo primitivo en este mismo pódcast; escuchad los capítulos s03e22, s03e24, s03e26, s02e22, s05e30, s03e31 y s05e40. En el episodio s03e25, además, os hablamos del experimento BICEP2 y su posible hallazgo de las huellas de la inflación cósmica. Este programa se emitió originalmente el 18 de julio de 2014. Podéis escuchar el resto de audios de La Brújula en su canal de iVoox y en la web de Onda Cero, ondacero.es
The State of the Universe - Stephen Hawking 70th Birthday Symposium
Alan Guth. Eternal Inflation and Its Implications
Transcript: In 1981, MIT physicist Alan Guth was looking for possible explanations for the smoothness and flatness of the universe when he came up with the idea of cosmic inflation. Inflationary cosmology is an adjustment to the standard big bang model wherein the universe went through a period of extremely rapid or exponential expansion at a time ten to the minus thirty-five to ten to the minus thirty-three seconds after the big bang; that’s a billion-billion-billion-billionth of a second after the big bang. In this tiny iota of time the universe expanded by forty orders of magnitude from smaller than an atomic nucleus to the size of about a grapefruit. The cause of inflation was the energy derived from a phase transition, such as that occurs when ice turns into water, which is associated with the unification of three of the fundamental forces of nature: the weak nuclear force, the strong nuclear force, and the electromagnetic force.
Transcript: Cosmologists can trace the big bang back to a quantum seed. In the inflationary model, the physical universe, the totality of space-time, must be very much larger than the observable universe that we can see. Alan Guth, one of the founders of inflation, has said that the universe may be the ultimate free lunch because in fact the entire cosmic expansion can be created from a quantum fluctuation, from energy borrowed from the vacuum of space. Another idea is chaotic inflation which hypothesizes many regions of space-time, all quantum fluctuations, creating different physical properties. In the sea of space-time foam, many universes might emerge. Some would be stillborn. Others might be short-lived, and a few might take flight as ours has done. All the universes could have different laws of physics with the laws of physics in our universe just one representation. Chaotic inflation is pure speculation, but its an evocative idea to make it clear that our universe might not be the only one.
In part 2 of this podcast, cosmologists Alan Guth from M.I.T., Arizona State University's Lawrence Krauss, John Carlstrom from the University of Chicago, and Fermilab's Scott Dodelson take reporters' questions at the annual meeting of the American Association for the Advancement of Science in Chicago on February 16th
In part 1 of this podcast, cosmologists Alan Guth from M.I.T., Arizona State University's Lawrence Krauss, John Carlstrom from the University of Chicago, and Fermilab's Scott Dodelson discuss the state of cosmology--and the universe's possible dismal future--at a press conference at the annual meeting of the American Association for the Advancement of Science in Chicago on February 16th