Podcasts about larmor

SPONSORS: - Go to https://expressvpn.com/theoriesofeverythingyt to find out how you can get up to 4 extra months thanks to our sponsor, ExpressVPN - Accelerate your efficiency. Sign up for your one-dollar-per-month trial today at http://shopify.com/theories - I subscribe to The Economist for their science and tech coverage. As a TOE listener, get 35% off! No other podcast has this: https://economist.com/TOE This conversation belongs in a category I wish were larger on this channel: the experimentalist who also thinks (deeply) about foundations. Professor Aephraim Steinberg, winner of Physics World's Breakthrough of the Year in 2011, is that species! For basically 30 years, he's been measuring aspects of physics that others wouldn't touch: Bohmian trajectories, Heisenberg's disturbance bound (he showed it was wrong), even where the photon is inside the double slit (which most textbooks will tell you is impossible). His lab measured negative time — and it keeps reappearing across completely different experiments, stubbornly suggesting it means something. FOLLOW: - Spotify: https://open.spotify.com/show/4gL14b92xAErofYQA7bU4e - Substack: https://curtjaimungal.substack.com/subscribe - Twitter: https://twitter.com/TOEwithCurt - Discord Invite: https://discord.com/invite/kBcnfNVwqs - Crypto: https://commerce.coinbase.com/checkout/de803625-87d3-4300-ab6d-85d4258834a9 - PayPal: https://www.paypal.com/donate?hosted_button_id=XUBHNMFXUX5S4 TIMESTAMPS: - 00:00:00 - Defining Negative Time - 00:06:50 - Quantum Trajectory Theory - 00:12:44 - The Holland Tunnel Analogy - 00:18:40 - Resonant Atomic Interactions - 00:26:05 - Superluminal Energy Propagation - 00:32:00 - Eight Velocities of Light - 00:38:00 - Causality and Retrocausality - 00:44:00 - Dwell Time vs. Delay - 00:50:24 - Time: Operator or Parameter? - 00:58:21 - Bell's Theorem and Realism - 01:04:55 - Heisenberg's Measurement Disturbance - 01:11:26 - Weak Measurement Formalism - 01:17:37 - Time Symmetry and Entropy - 01:27:07 - Bohmian Trajectories Observed - 01:35:56 - Spin-Statistics and Indistinguishability - 01:42:14 - Quantum Computational Advantage - 01:48:15 - Many Worlds vs. Complexity - 01:54:51 - Psi-Ontic vs. Psi-Epistemic - 02:01:37 - Collapsing Tunneling Particles - 02:08:48 - Larmor vs. Atto Clocks - 02:15:24 - Locality and Information LINKS MENTIONED: - Aephraim's Website: https://www.physics.utoronto.ca/~aephraim/ - Aephraim's Papers: https://scholar.google.com/citations?user=PzUyb6IAAAAJ - Photon Negative Time in Atom Cloud [Paper]: https://arxiv.org/pdf/2409.03680 - How Much Time Does a Photon Spend as Atomic Excitation? [Paper]: https://arxiv.org/abs/2310.00432 - Measuring Time Atoms Spend in Excited State [Paper]: https://journals.aps.org/prxquantum/abstract/10.1103/PRXQuantum.3.010314 - Tunneling Atom Time in Barrier [Paper]: https://arxiv.org/abs/1907.13523 - Single-Photon Tunneling Time [Paper]: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.71.708 - Traversal Time for Tunneling [Paper]: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.49.1739 - Propagation of a Gaussian Light Pulse [Paper]: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.1.305 - Linear Pulse Propagation in Absorbing Medium [Paper]: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.48.738 - Eighth Velocity of Light [Paper]: https://pubs.aip.org/aapt/ajp/article-abstract/45/6/538/1045817/Eighth-velocity-of-light - Attosecond Ionization [Paper]: https://www.science.org/doi/10.1126/science.1163439 - Tunneling Optical Pulses Photonic Band Gaps [Paper]: https://attoworld.de/fileadmin/user_upload/tx_attoworld/publications/paper_PhysRevLett_Y1994_M10_D24_V73_P2308.pdf - Evidence of Negative Time [Article]: https://www.scientificamerican.com/article/evidence-of-negative-time-found-in-quantum-physics-experiment/ - Light Speed Reduction [Article]: https://www.nature.com/articles/17561 - On the Theory of Light and Colors [Paper]: https://www.jstor.org/stable/pdf/107113.pdf - Wave Propagation and Group Velocity [Book]: https://amazon.com/dp/1483253937?tag=toe08-20 - EPR Paper [Paper]: https://journals.aps.org/pr/abstract/10.1103/PhysRev.47.777 - Uncertainty Principle: https://en.wikipedia.org/wiki/Uncertainty_principle - QBism [Paper]: https://arxiv.org/abs/1003.5209 More links at https://curtjaimungal.substack.com Guests do not pay to appear. #science Learn more about your ad choices. Visit megaphone.fm/adchoices

The Larmor Drift | Full Audiobook Acoustics researcher discovers the limestone beneath his university has been generating a standing electromagnetic wave for eleven thousand years. His body has been learning its frequency. Things get complicated. A scattered journey through time follows — a 1915 dirt road, a medieval plague street, a hypersleep pod folding through a wormhole, a future music festival, a Pleistocene plain where mammoths speak in infrasound. Underneath every destination, three notes. Always the same three. The science is real. The story is stranger. Recorded and produced in Ableton Live. First attempt at audio fiction. Probably not the last. — Cas

durée : 00:06:08 - Sur la route avec - Reportage dans cette station balnéaire du Morbihan (tout près de Lorient), qui depuis trois ans est régulièrement visitée par des sangliers.

En este programa se hablara de las obras aparecidas en el Foro de Laura Gallego titulada "Las Lunas de Larmor y "La Luz al Final del Tunel" de las que se escribió en el Blog Annavalaina en el año 2009. Junto a ello tocaremos algunos temas en noticias y recomendaciones además de profundizar en la despedida del programa. LOCUTOR: Miguel A. Mateos Carreira GUION: Maite "Mai" Fernández , Juan Ruiz y Miguel A. Mateos Carreira

97 fimmtudagar. Það eru mjög margir fimmtudagar. Í þætti dagsins segir Bylgja frá foreldrum sem hefðu betur sleppt því að fjölga sér og Unnur segir frá hræðilega sorglegu máli þar sem mjög illa er farið með unga konu af frumbyggjaættum. Í boði Marr, Ristorante, Vegan búðarinnar og Jömm. mordcastid.is instagram.com/mordcastid facebook.com/mordcastid  

Este programa está dedicado a una obra de la que ya hemos hablado pues ya hemos hablado de "Las Lunas de Larmor", historia del Foro de Laura Gallego y hoy será del libro de la novela de Anna Roldós. En cierto sentido es un viaje desde aquel comentario que ya hicimos al este del programa de hoy. Como siempre tendremos la biografía pertinente, las recomendaciones y noticias, las despedida; pero como ya hemos avisado no tendremos por motivos técnicos la parte pertinente de "AGUAS PROFUNDAS" pondremos todo el FANFIC en varios programas al final de la temporada completo.

En Juin prochain, vous pourrez participer à Larmor Plage, à une régate sur des bateaux en carton !

Tous les jours de la semaine, Jérôme Lacroix vous livre le meilleur des initiatives qui changent le monde, sur le web et en régions ! Ce vendredi, il souhaite mettre en avant l'initiative de Rozenn Jeudon, une factrice bretonne qui expédie des dizaines de lettres ou de cartes à des résidents d'Ehpad qui souffrent de solitude.

durée : 00:01:32 - Sortir en Bretagne avec France Bleu Armorique

Agoracom interviews CEOs of small cap companies. In this episode of the Small Cap CEO Interviews podcast, AGORACOM speaks with Star Navigation (CSE:SNA) VP - Corporate Development, Jean-Louis Larmor. Star Navigation Systems Group Ltd. owns the exclusive worldwide license to its proprietary, patented In-flight Safety Monitoring System, STAR-ISMS®, the heart of the STAR-A.D.S. ® System. Its real-time capability of tracking performance trends and predicting incident-occurrence enhances aviation safety and improves fleet management while reducing costs for the operator. Stars’ M.M.I. Division designs and manufactures high performance, mission critical, flight deck flat panel displays for defence and commercial aviation industries worldwide. These displays are found on aircraft and simulators, from P-3 Orion and C-130 aircraft, to Sikorsky and Agusta Westland helicopters, as examples.

Dans cette émission on reçoit les Sunvizors, on appelle Julie Lefebvre, on joue à Dream On, on parle de Jurassic Snack, de Little Big Fish, de Troll et Dragons, de SOS Dinos, de Farmini, on fait un retour sur Larmor Pion et on lira le courrier adressé aux Sunvizors.

The goal of this thesis is to study the transport properties and real-time dynamics of quantum magnets and ultra-cold atomic gases in one spatial dimension using numerical methods. The focus will be on the discussion of diffusive versus ballistic dynamics along with a detailed analysis of characteristic velocities in ballistic regimes. For the simulation of time-dependent density profiles we use the adaptive time-dependent density matrix renormalization group (DMRG). This numerical method allows for the simulation of time-dependent wave functions close to as well as far from equilibrium in a controlled manner. The studies of one-dimensional quantum magnets are partially motivated by the experimental evidence for a highly anisotropic and for insulators comparably high thermal conductivity of certain cuprates. We use linear response theory to study transport coefficients at arbitrary temperatures by diagonalizing small systems exactly and then calculating the current-current correlation functions. As first application we discuss the spin transport in the spin-$1/2$ Heisenberg chain with anisotropic exchange interactions (XXZ-chain). The second application of exact diagonalization, here in combination with time-dependent DMRG, is a discussion of the transverse components of the current-current correlation function. While usually only a Zeeman field is considered in the theory of transport coefficients, we here investigate the dynamic induced by an additional transverse magnetic field. We find that in this scenario the current-current correlation function exhibits coherent oscillations. In addition a second non-trivial frequency, different from the one expected from the usual Larmor precession, emerges and is studied varying temperature and field. Finally we calculate the frequency-dependent spin and heat conductivity of dimerized spin chains in a magnetic field. Motivated by the recent experimental studies of the phase diagram of C$_5$H$_{12}$N$_2$CuBr$_4$ we take the dimerized chain as a minimal model that exhibits features of the low-temperature region of the observed phase diagram. As a main result, the spin and heat conductivity obtained from linear response theory are enhanced in the field-induced gapless phase. The last application in the field of one-dimensional quantum magnets is the simulation of time-dependent energy-density wave-packets close to as well as far from equilibrium using the time-dependent density renormalization group. The main results are ballistic energy dynamics independently of how far out-of-equilibrium the initial state is and a detailed understanding of the average expansion velocity. The applications in the field of ultra-cold atomic gases focus on the sudden expansion of an initially trapped gas into an empty optical lattice. This setup was recently realized in an experiment performed by U. Schneider {it et al.} and discussed in the context of electronic transport in the two-dimensional and the three-dimensional Fermi-Hubbard model. Here we investigate the sudden expansion of three different setups: For the expansion of a spin-balanced cloud of fermions, we identify the ballistic regime, and therein investigate the average expansion velocity of the cloud. As a main result the expansion velocity is determined by a small subset of the initial condition over a wide range of parameters. For instance, the Mott-insulating phase of the Hubbard model is characterized by a constant expansion velocity independently of the strength of the interaction. In the case of spinless bosons, we study the expansion from initial states that have a fixed particle number per lattice site and a certain concentration of defects. We study the expansion velocity as a function of interaction strength and investigate whether the time-dependent momentum distribution functions indicate a dynamical quasi-condensation. The last example is the sudden expansion of a spin-polarized gas of fermions in the presence of attractive interactions. This study is motivated by current effort to experimentally detect the Fulde-Ferrell-Larkin-Ovchinnikov state. Our results for the time-dependent momentum distribution functions and the wave-function of the pair condensate suggest that the signatures of the FFLO state vanish quickly, yet a stationary form of the momentum distribution also emerges fast. The latter is shown to be determined by the initial conditions, which might eventually allow for an indirect detection of the FFLO phase.

Abstract: Nitrogen vacancy (NV) center spins in diamond have emerged as a promising solid-state system for quantum information and precision metrology at room temperature. Fast, coherent control and storage of quantum information is crucial due to the practical need for fault tolerance. Manipulation of a two-level system (a spin) is typically performed under the rotating wave approximation (RWA) which assumes that an oscillating field can be approximated by a rotating field. We present high-speed microwave experiments probing the spin dynamics of single NV centers in diamond driven by a large amplitude oscillating field where this approximation is not valid. Using lithographically patterned coplanar waveguides on the diamond substrate, we drive spin rotation on the same timescale as Larmor precession. Coherent spin flips still occur under these conditions, but with sub-nanosecond timescales, faster than expected from the RWA. In addition to ground-state spin manipulation, we apply these techniques to study the spin coherence of single NV centers in their orbital excited state (ES). We demonstrate ES Rabi oscillations and use multi-pulse resonant control to differentiate between phonon-induced dephasing, orbital relaxation, and coherent electron-nuclear interactions. Finally, extending our coplanar waveguide approach, we fabricate a high-bandwidth two-axis vector magnet on diamond to perform a coherent swap operation between a single NV centerelectronic spin and the associated nitrogen nuclear spin to demonstrate a nuclear spin quantum memory. These experiments provide tools for coherently manipulating and storing quantum information in a scalable solid-state system at room temperature. Gregory D. Fuchs was with the Center for Spintronics and Quantum Computation University of California, Santa Barbara. Presented October 6, 2010.

matrices for spin one half, Larmor precession, Stern-Gerlach