KIAS hep-ph 고등과학원 현상론그룹
KIAS hep-ph 고등과학원 현상론그룹
  • Видео 178
  • Просмотров 42 513
Confinement and False Vacuum Decay in Quantum Spin Chains
Speaker : Dr. Gianluca Lagnese
Abstract : The confinement of elementary particles and the decay of the false vacuum are two paradigmatic predictions
of quantum field theory. In their simplest formulation, the two phenomena can be understood
as two facets of an underlying symmetry-breaking mechanism: the degeneracy of a double-degenerate
vacuum is lifted by adding an explicit symmetry-breaking external field. Confined states are false
vacuum bubbles within a true vacuum (the true ground state of the model); likewise, false vacuum
decay refers to the dissolution of the metastable vacuum through true vacuum bubbles nucleation via
quantum tunneling. The interest in this area of research has been rec...
Просмотров: 167

Видео

Detecting Hidden Photon and Axion Dark Matter Using Superconducting Qubits
Просмотров 733 месяца назад
Speaker : Prof. Hajime Fukuda Abstract : Superconducting qubits are one of the most promising candidates for quantum computers, which have been rapidly being developed in these days. We propose to use superconducting qubits to detect the hidden photon and axion dark matter of a mass of O(10) μeV. By measuring the excitation of qubits by the dark photon, we find that one can reach 𝜀∼10^-13-10^-1...
Dark Matter Power-sensing with Quantum Devices
Просмотров 783 месяца назад
Speaker : Prof. Anirban Das Abstract : Low mass dark mass search has emerged as the next frontier in the direct detection experiments. In this talk, I will describe the novel idea of using transmon qubits and other mesoscale superconducting quantum sensors to detect power deposition from dark matter-nucleon scattering. I will briefly describe the power deposition calculation method, and show th...
On the fate of electroweak vacuum and gravitational wave signatures in beyond Standard Model...
Просмотров 794 месяца назад
Title : On the fate of electroweak vacuum and gravitational wave signatures in beyond Standard Model scenarios Speaker : Dr. Shilpa Jangid Abstract : The electroweak vacuum, mainly at zero temperature, is investigated as how the quantum fluctuations affect and constrain different beyond Standard Model (BSM) extensions The quantum fluctuations can lead to a second minimum of the potential, which...
Hadronic uncertainties versus new physics for the W boson mass and Muon g−2 anomalies
Просмотров 754 месяца назад
Speaker : Prof. Chih-Ting Lu Abstract : There are now two single measurements of precision observables that have major anomalies in the Standard Model: the recent CDF measurement of the W mass shows a 7 sigma deviation and the Muon g−2 experiment at FNAL confirmed a long-standing anomaly, implying a 5 sigma deviation. Doubts regarding new physics interpretations of these anomalies could stem fr...
Neutrino zeromodes on electroweak strings in light of topological insulators
Просмотров 1135 месяцев назад
Speaker: Dr. Yu Hamada (DESY) Abstract: It is known that SU(2)xU(1) electroweak theory gives a non-trivial soliton solution called Z-string. Because it is an unstable solution in the SM, it is considered that it does not play any role in cosmology and phenomenology. On the other hand, since it couples to SM fermions inevitably, fermion zeromodes appear on the string as zero-energy solutions of ...
No νs is Good News
Просмотров 3145 месяцев назад
Speaker: Prof. Daniel Green (UC, San Diego) Abstract: The baryon acoustic oscillation (BAO) analysis from the first year of data from the Dark Energy Spectroscopic Instrument (DESI), when combined with data from the cosmic microwave background (CMB), has placed an upper-limit on the sum of neutrino masses, $\sum m_ u \less 70$ meV (95%). In addition to excluding the minimum sum associated with ...
QCD-Collapsed Domain Walls (Yang Bai)
Просмотров 87Год назад
Title: QCD-Collapsed Domain Walls Speaker: Yang Bai (University of Wisconsin-Madison) Abstract: For a discrete symmetry that is anomalous under QCD, the domain walls produced in the early universe from its spontaneous breaking can naturally annihilate due to QCD instanton effects. We point out that the QCD phase transition within some domains with an effective large QCD theta angle could be a f...
Sphaleron in the Higgs Triplet Model (Bingrong Yu)
Просмотров 170Год назад
Title: Sphaleron in the Higgs Triplet Model Speaker: Bingrong Yu (Cornell University & Korea University) Abstract: The Higgs triplet model (HTM) extends the Standard Model (SM) by one complex triplet scalar (also known as the type II seesaw model), offering a simple and viable way to account for nonzero neutrino masses. On the other hand, the nontrivial couplings of the triplet to the gauge fie...
Exploring quantum tunneling in the real-time path integral with the Lefschetz thimble method
Просмотров 134Год назад
Title: Exploring quantum tunneling in the real-time path integral with the Lefschetz thimble method Speaker: Atis Yosprakob (Niigata University) Abstract: Quantum tunneling can be described in the imaginary-time path integral using instantons. The situation in the real-time formalism remains elusive due to the oscillatory nature of the path integral. Here, we propose that quantum tunneling can ...
Symmetries and Selection Rules: Optimising Axion Haloscopes for Gravitational Wave Searches
Просмотров 84Год назад
Title: Symmetries and Selection Rules: Optimising Axion Haloscopes for Gravitational Wave Searches Speaker: Sung Mook Lee (Yonsei University) Abstract: In the presence of electromagnetic fields, both axions and gravitational waves (GWs) induce oscillating magnetic fields: a potentially detectable fingerprint of their presence. We demonstrate that the response is largely dictated by the symmetri...
Continuous spectrum on cosmological collider (Shuntaro Aoki)
Просмотров 54Год назад
Title: Continuous spectrum on cosmological collider Speaker: Shuntaro Aoki (Chung-Ang University) Abstract: The cosmological collider program is to find a new massive particle from non-Gaussianity of the curvature perturbation. In this work, we study the effects of a massive field with a "continuous" spectrum on the non-Gaussianity. This kind of continuous spectrum is motivated by several extra...
Phenomenology of discrete flavor symmetries beyond neutrino masses and mixing (Biswajit Karmakar)
Просмотров 64Год назад
Title: Phenomenology of discrete flavor symmetries beyond neutrino masses and mixing. Speaker: Biswajit Karmakar (University of Silesia) Abstract: This talk will review neutrino mass, mixing, and flavor model-building strategies based on discrete family symmetry in light of the latest neutrino oscillation data. We briefly discuss absolute neutrino mixing schemes and mention surviving neutrino m...
Phase transition at the early Universe (1) (Masanori Tanaka)
Просмотров 284Год назад
Title: Phase transition at the early Universe Speaker: Masanori Tanaka (Osaka University) Abstract: In this lecture, I will give a review for the electroweak phase transition at the early Universe. It is well known that the electroweak symmetry is broken at the early Universe. However, the dynamics of electroweak symmetry breaking is still unknown. On the other hand, several problems beyond the...
Phase transition at the early Universe (2) (Masanori Tanaka)
Просмотров 168Год назад
Title: Phase transition at the early Universe Speaker: Masanori Tanaka (Osaka University) Abstract: In this lecture, I will give a review for the electroweak phase transition at the early Universe. It is well known that the electroweak symmetry is broken at the early Universe. However, the dynamics of electroweak symmetry breaking is still unknown. On the other hand, several problems beyond the...
Walls, Bubbles & Doom: the Cosmology of HEFT. (Mia West)
Просмотров 85Год назад
Walls, Bubbles & Doom: the Cosmology of HEFT. (Mia West)
Mesoscopic quantum systems to detect light dark matter (Anirban Das)
Просмотров 63Год назад
Mesoscopic quantum systems to detect light dark matter (Anirban Das)
Probing first-order electroweak phase transition via primordial black holes in the EFT
Просмотров 179Год назад
Probing first-order electroweak phase transition via primordial black holes in the EFT
Non-invertible Gauss Law and Axions (Yichul Choi)
Просмотров 119Год назад
Non-invertible Gauss Law and Axions (Yichul Choi)
Type II Seesaw leptogenesis (Chengcheng Han)
Просмотров 79Год назад
Type II Seesaw leptogenesis (Chengcheng Han)
Structures of Neural Network Effective Theories (Zhengkang "Kevin" Zhang)
Просмотров 162Год назад
Structures of Neural Network Effective Theories (Zhengkang "Kevin" Zhang)
Why Do Pions Decay? (Shu-Heng Shao)
Просмотров 290Год назад
Why Do Pions Decay? (Shu-Heng Shao)
Dark Solar Wind (Jae Hyeok Chang)
Просмотров 43Год назад
Dark Solar Wind (Jae Hyeok Chang)
Dark matter direct detection via electromagnetic multipoles (Merlin Reichard)
Просмотров 102Год назад
Dark matter direct detection via electromagnetic multipoles (Merlin Reichard)
Constraints on Self-interacting Radiations with Cosmological Data (Jae Hyeok Chang)
Просмотров 68Год назад
Constraints on Self-interacting Radiations with Cosmological Data (Jae Hyeok Chang)
QCD axion production in the early Universe (Fabrizio Rompineve)
Просмотров 126Год назад
QCD axion production in the early Universe (Fabrizio Rompineve)
MadNIS - Neural networks for multi-channel integration, Dr. R. Winterhalder
Просмотров 88Год назад
MadNIS - Neural networks for multi-channel integration, Dr. R. Winterhalder
Multi-photon decays of the Higgs boson at the LHC
Просмотров 223Год назад
Multi-photon decays of the Higgs boson at the LHC
4b+X/4B+W via electroweak multi-Higgs production for the Type-I 2HDM at the LHC
Просмотров 185Год назад
4b X/4B W via electroweak multi-Higgs production for the Type-I 2HDM at the LHC
Restrictions on the renormalisation group flow of effective field theories (Mikael Chala)
Просмотров 50Год назад
Restrictions on the renormalisation group flow of effective field theories (Mikael Chala)

Комментарии

  • @xXcondidiXx
    @xXcondidiXx 2 месяца назад

    this video was not made for me...

  • @floerLeoverzem
    @floerLeoverzem 3 месяца назад

    Hey Doctor Cheung, wanna teach me?

  • @maftis51
    @maftis51 3 месяца назад

    Great video, thanks and congratulations ... This other video teaches new physics, show hidden variables to study gravity, with a rational demonstration of the non-existence of dark matter ruclips.net/video/b5TU-YJrMVE/видео.html

  • @EternalSearcher
    @EternalSearcher 5 месяцев назад

    I didn't get it. Is Eminem gay?

  • @njctboy
    @njctboy 10 месяцев назад

    ???

  • @shawns0762
    @shawns0762 Год назад

    There is no dark matter. Most people don't know that Einstein said that singularities are not possible. In the 1939 journal "Annals of Mathematics" he wrote "The essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of General relativity predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters (he was referring to large clusters of stars) whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light." He was referring to the phenomenon of dilation (sometimes called gamma or y) mass that is dilated is smeared through spacetime relative to an outside observer. This is illustrated in a common 2 axis dilation graph with velocity on the horizontal line and dilation on the vertical. This shows the squared nature of the phenomenon, dilation increases at an exponential rate the closer you get to the speed of light. General relativity does not predict singularities when you factor in dilation. Einstein is known to have repeatedly spoken about this. Nobody believed in black holes when he was alive for this reason. Wherever there is an astronomical quantity of mass, dilation will occur because high mass means high momentum. There is no place in the universe where mass is more concentrated than at the center of a galaxy. According to Einstein's math, the mass at the center of our own galaxy must be dilated. In other words that mass is all around us. This is the explanation for the abnormally high rotation rates of stars in spiral galaxies, the missing mass is dilated mass. According to Einstein's math, there would be no dilation in galaxies with very, very low mass or galaxies with low mass in their centers. To date, 5 very, very low mass galaxies have been confirmed to have normal star rotation rates, in other words they showed no signs of dark matter. This is virtual proof that dilation is the governing phenomenon in galactic centers, there can be no other realistic explanation for this fact. It can also be shown mathematically that this is true.

  • @jjjjmmdi989
    @jjjjmmdi989 Год назад

    Der schlimmste Professor aller Zeiten

  • @Nrk4u
    @Nrk4u Год назад

    This is great 👍 thanks. Sooooo interesting. Totally a little too dark

  • @jblattnernyc
    @jblattnernyc Год назад

    A truly incredible lecture! Kolb & Turner's "The Early Universe" remains an all-time classic. Thank you for making this available 💫

  • @shawns0762
    @shawns0762 Год назад

    Most people don't know that Einstein said that singularities are not possible. In the 1939 journal "Annals of Mathematics" he wrote "the essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of General relativity predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light." He was referring to the phenomenon of dilation (sometimes called gamma or y) mass that is dilated is smeared through spacetime relative to an outside observer. This is illustrated in a common 2 axis dilation graph with velocity on the horizontal line and dilation on the vertical. Even mass that exists at 75% light speed is partially dilated. General relativity does not predict singularities when you factor in dilation. Einstein is known to have repeatedly spoken about this. Nobody believed in black holes when he was alive for this reason. Wherever you have an astronomical quantity of mass, dilation will occur because high mass means high momentum. There is no place in the universe where mass is more concentrated than at the center of a galaxy. Einstein wrote about dilation occuring in regions that would have less mass than that which would exist at the center of common spiral galaxies, since high mass means high momentum, it's safe to say that according to Einstein's math the mass at the center of our own galaxy must be dilated. In other words that mass is all around us. This is the explanation for the abnormally high rotation rates of stars in spiral galaxies, the missing mass is dilated mass. According to Einstein's math, galaxies with very, very low mass would not contain dilated mass because they do not have enough mass at the center to achieve relativistic velocities. To date, 5 very low mass galaxies have been confirmed to show no signs of dark matter, in other words they have normal star rotation rates. This is virtual proof that dilation is the governing phenomenon in galactic centers, there can be no other realistic explanation for this fact.

  • @meruem6995ujjoooo
    @meruem6995ujjoooo Год назад

    thanks professer Xiao, thank you altough i never met you, i cherish you.

  • @abdonecbishop
    @abdonecbishop Год назад

    quick peek .....start and end ......looks fine is my first impression....nice work

  • @LuciFeric137
    @LuciFeric137 Год назад

    Very interesting. Thank you.

  • @maftis51
    @maftis51 Год назад

    Look no further for dark matter… This is new physics, it shows hidden variables to study gravity, with a rational demonstration of the non-existence of dark matter. ruclips.net/video/b5TU-YJrMVE/видео.html

  • @ameerahmed6623
    @ameerahmed6623 2 года назад

    Technology for slides does not exist yet

  • @maftis51
    @maftis51 2 года назад

    Look no further for dark matter… This is new physics, it shows hidden variables to study gravity, with a rational demonstration of the non-existence of dark matter. ruclips.net/video/b5TU-YJrMVE/видео.html

  • @maftis51
    @maftis51 2 года назад

    This is new physics with a rational demonstration of the non-existence of dark matter ruclips.net/video/b5TU-YJrMVE/видео.html

  • @whom4751
    @whom4751 2 года назад

    Code of conduct These bidding integrations follow the principles of our code of conduct that support a healthy ecosystem for people, publishers and advertisers. Publishers will be able to monetize with Meta Audience Network through approved partners.

  • @SeanRhoadesChristopher
    @SeanRhoadesChristopher 2 года назад

    The Dark Matter may be in higher dimensions, thus impossible for us to detect.

  • @ossiedunstan4419
    @ossiedunstan4419 2 года назад

    You cannot accelerate something that does not exist. Dark Matter does not exist outside the minds of failed scientist's. Show me dark matter all i have ever seen of it is CGI algorithmic predictive software , WHICH IS NOT REALITY. STOP WASTING SCIENCE AND MONEY.

  • @maftis51
    @maftis51 2 года назад

    This is a rational demonstration of the non-existence of dark matter ruclips.net/video/b5TU-YJrMVE/видео.html

  • @Itskaintmeenu
    @Itskaintmeenu 2 года назад

    hi nice video

  • @dcrespin
    @dcrespin 2 года назад

    I repeat here some comments previously made to similar videos. They may clarify several pending matters. The Schrödinger time dependent equation (STDE) when applied to a wave representing an initial state of, say, an electron bound to a proton and together forming a hydrogen atom, predicts and retrodicts all the future and previous states of the electron wave, in the same fashion than the evolution equations of classical mechanics predicts the movement of the Earth around the Sun. Note that the STDE is energy conservative, that is, the initial state as well as the predicted and retrodicted ones all have the same energy. As is well known the bound electron has a completely different conduct. Whatever the initial state and in absence of other interactions an excited electron will settle in a stationary state radiating energy (in the form of a photon) along the way. If the stationary state is the ground state the electron will stay there forever (in absence, as said before, of other interactions). Otherwise the stationary electron state is ephemeral and will be abandoned to radiate a photon and assume a new stationary state of even lower energy. This "down the staircase" process repeats until the ground state is reached. There is no manner to adapt the STDE to this physical process. This inconsistency was discovered by none other than Niels Bohr, as can be inferred from the report of Werner Heisenberg. See our note www.researchgate.net/publication/356193279_Deconstruction_of_Quantum_Wave_Mechanics After discovering the tremendous inconsistency between the equation and the atom it would have been natural to announce that the STDE contradicted physical facts, and ask for a correct equation. I assume as true, but only know from hearsay very long ago, that in Einstein's viewpoint the correct deterministic time dependent wave equation had to be non-linear in contrast with the linear STDE. References to this historical detail would be appreciated. It is hard to believe but, against reasonableness and common sense, Bohr decided to adopt the STDE as correct and that continuity, causality and determinism of physical processes were wrong because they contradicted the STDE. Apparently mathematical equations on paper were more relevant than the experience of the whole human race. Then a series of new and fanciful "quantum physical principles" were adopted. In my opinion the powerful quantum establishment dogmatically defends Quantism and strongly rejects any attempt to correct its misdeeds, even if the correct deterministic time dependent wave equation is available. With best regards to all Daniel Crespin

  • @maftis51
    @maftis51 2 года назад

    Give this video some time to surprise yourself (if you like rational physics) ... This is a rational (NOT ad-hoc) demonstration of the non-existence of dark matter ruclips.net/video/b5TU-YJrMVE/видео.html

  • @jeffbguarino
    @jeffbguarino 2 года назад

    If the primordial black holes don't exist , you have not wasted 50 years of your life. You have done the necessary research and investigations to disprove them. Proving something doesn't exist is also very important so we know that we should concentrate on other theories.

  • @maftis51
    @maftis51 2 года назад

    Give this video some time to surprise yourself (if you like rational physics) ... This is a rational (NOT ad-hoc) demonstration of the non-existence of dark matter ruclips.net/video/b5TU-YJrMVE/видео.html

  • @THEDIVINEMISCARRIAGE
    @THEDIVINEMISCARRIAGE 2 года назад

    This is actually great, totally redeems EC gravity for making quantum mechanics nonlinear

  • @ayoubaymn3404
    @ayoubaymn3404 2 года назад

    Hello. I want to help you with this subject , please

  • @SavageStephen
    @SavageStephen 3 года назад

    thank you for making something so complicate so much more simple so the rest of the people can understand us

  • @davidwilkie9551
    @davidwilkie9551 3 года назад

    Chemical Bonding Clarified through Quantum Mechanics, aka Resonance Heirachy sequences that are inherently a problem to identify in AM-FM Timing-spacing Radiation coordination, elemental e-Pi-i sync-duration connectivity Perspective.., because it's an amorphous arrangement of holographic nodes in logarithmic spin-spiral condensation modulation interference positioning=> resonance. Fluxion, photon-phonon positioning composition of empirical shaping laws in Calculus Chain Rule. (Amateur level Feynman type guessing based on Elementary Observation, or, hitting the inside of a Barn with a Shovel full of Rice) The Chain Rule..? Because E=mC² is THE logarithmic temporal vector condensation machinery of Actuality Conception recognition, and the empirical conservation laws cause-effect of time-timing sync-duration identification Singularity positioning. The powers of Quantum Number dominance sequence e-Pi-i multiple sync-duration phase-locked coherence-cohesion objective-aspects at the .dt Origin. All the rest.. is left to Math-Physics Students who know what they are doing. *Holographic Principle holistic Observation is equivalent to Infinity/Eternity-now Perspective, .dt zero-infinity sync-duration connectivity distribution or what is symbolised as-for-by Polar-Cartesian self-defining infinitesimal coordination-identification, functional-dualistic e-Pi-i positioning etc

  • @mikehipps1015
    @mikehipps1015 3 года назад

    I'm not a physicist, just a person who is fascinated by physics. I'm slowly working my head around fields and other phenomena and I have a question that I'm not exactly sure how to explain it. I'm wondering if the universe is pixelated at the Planck length, is there a force that binds those pixels together? Sort of like how the strong nuclear force binds quarks?

  • @stevenmarshall1119
    @stevenmarshall1119 3 года назад

    guitar-string pseudotheory and M-theory are wrong

  • @jollyjoker6340
    @jollyjoker6340 3 года назад

    16:14 One of the advantages of working remote is that it looks really bad if you're on a stage and just zone out for two minutes

  • @marina_9236
    @marina_9236 3 года назад

    Nima <3

  • @JohnJTraston
    @JohnJTraston 3 года назад

    Some thoughts :) :) :) .... Nima, what is 2 + 2 ? Nima: take a chair, sit down. Naively it's 4, but ......... (goes on for 3 hours)

  • @DavidBrown-om8cv
    @DavidBrown-om8cv 3 года назад

    "... the simplest picture of WIMP dark matter ..." An understanding of dark matter must take into account the empirical successes of MOND. Google "kroupa milgrom".

    • @schmetterling4477
      @schmetterling4477 2 года назад

      Your Nobel is in the mail. I got you an XL size. :-)

    • @DavidBrown-om8cv
      @DavidBrown-om8cv 2 года назад

      @@schmetterling4477 ​ @Schmetter Ling : Consider this idea: Professor Milgrom of the Weizmann Institute should have won the Nobel Prize 20 years ago. When McGaugh 1st encountered MOND he thought it was not worth considering, but he changed his mind after studying the evidence. Kroupa has spent over 20 years attempting to find a clear failure in the MOND regime but so far MOND looks good (at least non-relativistically) to him.

  • @hiadrianbankhead
    @hiadrianbankhead 3 года назад

    I immediately clicked on this link because of course we all recognize Nima Arkani-Hamed's handwriting lol.

  • @jozsefolasz8702
    @jozsefolasz8702 3 года назад

    I've always enjoyed your speeches. This is a world of ideas witch I cannot understand, but I find it fascinating or funny or something. Thank you. I feel this is a good direction.