Laboratoire Astroparticule & Cosmologie (APC)
Laboratoire Astroparticule & Cosmologie (APC)
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Gravity induced CP(T) violation, J.-M. Rax
The impact of earth's gravity on neutral kaons oscillations is analyzed. The main effect of a gravitational potential is to couple the strangeness oscillation and the strange quarks zitterbewegung. This coupling is responsible for the observed CP violations. Gravity induced CP violation is in fact a CPT violation with T conservation rather than a T violation with CPT conservation, but the finite lifetime of the short-lived kaon induces a rotation of the imaginary CPT violation parameter such that it becomes real and the effect is observed as a CP and a T violation. Both the indirect and direct violation parameters resulting from this gravity induced coupling between zitterbewegung and DS=2 oscillations are in agreement with the experimental data. This new symmetry violation mechanism, validated experimentally, makes it now possible to build models of the primordial universe in agreement with the present antimatter/matter asymmetry.
มุมมอง: 23

วีดีโอ

Forging the Future of CERN: a view from the Council
มุมมอง 6628 วันที่ผ่านมา
The Council of CERN is responsible for formulating the scientific and financial policy of CERN. It does this with strong coordination with the CERN Director General and Management. I will describe how the CERN Council reaches its decision in general and the process this year that had led to initiating the Fourth European Strategy Group for Particle Physics.
Astrophysical Tau Neutrinos and Other Recent Results from the IceCube Neutrino Observatory, D. Cowen
มุมมอง 594 หลายเดือนก่อน
Neutrinos are very reticent fundamental particles. Tau neutrinos make electron and muon neutrinos look positively gregarious. The IceCube Neutrino Observatory at the South Pole has sensitivity to all three active neutrino flavors over an energy scale spanning six orders of magnitude. We report on recent results from the experiment, including the first high-significance measurement of the most e...
The Extragalactic Multi-Messenger Spectrum: Lessons From Propagation of Astroparticles by J. Biteau
มุมมอง 465 หลายเดือนก่อน
Our understanding of the radiation record of the universe has advanced dramatically over the past ten years. The brightness of the extragalactic sky is now measured in photons, neutrinos and cosmic rays by observatories on the ground, in the depths of the sea and ice, by satellites orbiting the Earth, and by probes at the edge of the solar system. The combination of their measurements allows us...
"The Simons Observatory", by M. Devlin
มุมมอง 1356 หลายเดือนก่อน
APC Colloquium, 03/27/24. Speaker: Mark Devlin. Large scale millimeter-wave surveys of the sky with arcminute resolution, designed to explore the origin and evolution of the universe, will produce rich new data sets addressing a wide range of pressing science questions. The next generation of Cosmic Microwave Background instruments, including the Simons Observatory (SO) and CMB-S4, will probe t...
"Cosmological Results from the Dark Energy Survey", by B. Popovic
มุมมอง 6528 หลายเดือนก่อน
APC Colloquium, 02/12/24. Speaker: Brodie Popovic. We present cosmological constraints from the sample of Type Ia supernovae (SN Ia) discovered during the full five years of the Dark Energy Survey (DES) Supernova Program. In contrast to most previous cosmological samples, in which SN are classified based on their spectra, we classify the DES SNe using a machine learning algorithm applied to the...
'Navigating the nucleus: The path to precision measurements of neutrino oscillations' by L. Munteanu
มุมมอง 9910 หลายเดือนก่อน
APC Colloquium, 11/12/23. Speaker: Laura Munteanu. The discovery of neutrino oscillations has opened a new chapter in particle physics. The observation of this phenomenon implies that neutrinos have non-zero masses, a property not accounted for in the Standard Model. The mechanism most widely-used to model neutrino oscillations uses a mixing matrix formalism, similar to the one in the quark sec...
'The contribution of X-ray polarimetry to the study of cosmic sources', by F. Marin
มุมมอง 9610 หลายเดือนก่อน
APC Colloquium, 06/12/23. Speaker: Frédéric Marin. All types of cosmic sources have already been probed in photometry, spectroscopy, imaging and temporal analyses. However, there is one property of light that has not been exploited as much as the others : its polarization. For decades, high energies polarimetry was a missing piece in the great puzzle of our instrumental skills. In December 2021...
High-energy neutrinos from relativistic magnetic reconnection in black-hole coronæ, by M.Petropoulou
มุมมอง 12510 หลายเดือนก่อน
APC Colloquium, 20/11/23. Speaker: Maria Petropoulou The detection of ultra-high-energy cosmic rays and high-energy neutrinos suggests the presence of sources that act as hadronic accelerators of the Universe. Recently, the IceCube Collaboration has provided compelling evidence for high-energy neutrinos from the nearby Seyfert galaxy NGC 1068. Several scenarios have been put forward to explain ...
Les trous noirs fusionnent!
มุมมอง 681ปีที่แล้ว
Alexis Coleiro, enseignant-chercheur à l’Université Paris Cité et au Laboratoire APC, nous explique comment les trous noirs peuvent être amenés à fusionner, et comment observer de tels événements cataclysmiques. Alexis Coleiro, professor at Université Paris Cité and Laboratoire APC, explains how black holes mergers and how to observe such cataclysmic events. Hosted by / Présenté par Alexis Cole...
'The Dipole Tension', by R. Mohayaee
มุมมอง 613ปีที่แล้ว
APC Colloquium, 26/06/23. Speaker: Roya Mohayaee. The origin of the CMB dipole is attributed to the anisotropic distribution of matter in the local Universe. If the Universe is statistically homogeneous and isotropic on large scales, as proposed by the cosmological principle, then the CMB dipole and the high-redshift matter dipole are expected to coincide. Using a recent sample of quasars from ...
'LHAASO results from first years of observation', by D. Semikoz
มุมมอง 167ปีที่แล้ว
APC Colloquium, 13/06/23. Speaker: Dmitri Semikoz. In this talk I’ll present a summary of new LHAASO results from the first LHAASO symposium, which was held in Shanghai on May 29-June 2, 2023. At this symposium LHAASO collaboration presented the first catalog of 90 sources of TeV gamma-rays, out of which 32 are new. The number of gamma-ray sources at highest energies (larger than 100 TeV) incre...
'Hidden dynamos in radiative stars' by L. Petitdemange
มุมมอง 153ปีที่แล้ว
APC Colloquium, 30/05/23. Speaker: Ludovic Petitdemange. The evolution of a star is influenced by its internal rotation dynamics through transport and mixing mechanisms, which are poorly understood. Magnetic fields can play a role in transporting angular momentum and chemical elements, but the origin of magnetism in radiative stellar layers is unclear. Using global numerical simulations, we ide...
What is neutrino oscillation ?
มุมมอง 343ปีที่แล้ว
What is neutrino oscillation ?
'JWST: the promise of the dawn of the universe' by D. Elbaz
มุมมอง 405ปีที่แล้ว
'JWST: the promise of the dawn of the universe' by D. Elbaz
'Slowing down light in vacuum with intense laser pulses: the DeLLight experiment' by X. Sarazin
มุมมอง 142ปีที่แล้ว
'Slowing down light in vacuum with intense laser pulses: the DeLLight experiment' by X. Sarazin
'Cosmology meets Fundamental Physics' by E Kiritsis
มุมมอง 148ปีที่แล้ว
'Cosmology meets Fundamental Physics' by E Kiritsis
Hubble troubles Licia Verde ICREA Barcelona
มุมมอง 116ปีที่แล้ว
Hubble troubles Licia Verde ICREA Barcelona
Openning of the meeting APC Perimeter Solvay 25 05 2021
มุมมอง 37ปีที่แล้ว
Openning of the meeting APC Perimeter Solvay 25 05 2021
L' APC participe au programme PAUSE
มุมมอง 29ปีที่แล้ว
L' APC participe au programme PAUSE
Frise historique du laboratoire APC
มุมมอง 334ปีที่แล้ว
Frise historique du laboratoire APC
3 conférences: Cosmologie dans l'espace. Les rayons cosmiques. LISA, 1 détecteur spatial.
มุมมอง 5Kปีที่แล้ว
3 conférences: Cosmologie dans l'espace. Les rayons cosmiques. LISA, 1 détecteur spatial.
Discussion Session Important problems and prospects in Cosmology
มุมมอง 109ปีที่แล้ว
Discussion Session Important problems and prospects in Cosmology
Conformal symmetry towards the link between the Fermi and the Planck scales M Shaposhnikov EPFL
มุมมอง 194ปีที่แล้ว
Conformal symmetry towards the link between the Fermi and the Planck scales M Shaposhnikov EPFL
Relic neutrino detection through angular correlations in inverse 𝛽 decay Evgeny Ahmedov MPI
มุมมอง 47ปีที่แล้ว
Relic neutrino detection through angular correlations in inverse 𝛽 decay Evgeny Ahmedov MPI
Forty years of the no boundary proposal a subjective status report Jean Luc Lehners AEI, Golm
มุมมอง 194ปีที่แล้ว
Forty years of the no boundary proposal a subjective status report Jean Luc Lehners AEI, Golm
A Timeless History of Time Prof Enrico Pajer Cambridge
มุมมอง 88ปีที่แล้ว
A Timeless History of Time Prof Enrico Pajer Cambridge
Discussion Session The cosmological principle and the acceleration of the universe
มุมมอง 81ปีที่แล้ว
Discussion Session The cosmological principle and the acceleration of the universe
FRB science results from CHIME Prof Kendrick Smith Perimeter Institute for Theoretical Physics
มุมมอง 84ปีที่แล้ว
FRB science results from CHIME Prof Kendrick Smith Perimeter Institute for Theoretical Physics
Enabling kSZ cosmology using Fast Radio Bursts
มุมมอง 60ปีที่แล้ว
Enabling kSZ cosmology using Fast Radio Bursts

ความคิดเห็น

  • @shawns0762
    @shawns0762 5 หลายเดือนก่อน

    General Relativity predicts dilation, not singularities. Dilation explains dark matter. In the 1939 journal "Annals of Mathematics" Einstein 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 G.R. predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters (star 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. It's the phenomenon behind the phrase "mass becomes infinite at the speed of light". Time dilation is just one aspect of dilation, it's not just time that gets dilated. A graph illustrates its squared nature, dilation increases at an exponential rate the closer you get to the speed of light. There is no singularity at the center of our galaxy. It can be inferred mathematically that dilation is occurring there. In other words that mass is all around us. This is the explanation for galaxy rotation curves. The "missing mass" is dilated mass. Dilation does not occur in galaxies with low mass centers because they do not have enough mass to achieve relativistic velocities. To date, 6 very low mass galaxies have been confirmed to show no signs of dark matter. This also explains why all planets and all binary stars have normal rotation rates, not 3 times normal.

  • @axisofbeginning
    @axisofbeginning 9 หลายเดือนก่อน

    An entertaining and easy-to-understand dialogue about the cosmic microwave background radiation alignments is the stage play, "Axis of Beginning."

  • @zeerakkhan7806
    @zeerakkhan7806 ปีที่แล้ว

    Very interesting analysis and conclusion. Thanks prof Sarkar.

  • @RadicalCaveman
    @RadicalCaveman ปีที่แล้ว

    I'm not sure how much I understood of it, but that was fascinating nonetheless.

  • @debyton
    @debyton ปีที่แล้ว

    {LIVE Science; Forums, History and Culture; Culture History & Science; What is a living individual and is it naturally universally mobile?} The LINE hypothesis proposes that one difference between a universal instantiation event (UIE) and any universal transition event (UTE) is the quantity of fundamental elements initially created. The UIE is the instantiating event which may create an amount of fundamental elements that is calculable from a correctly conceived standard model of particles. The UTE is one of many transition events subsequent to the UIE and is driven by circumstances of the prior contraction phase. The UTE phase will not have an instantiating amount of energy as does the UIE. Nor will a UTE express the instantiating metaverse states which produces a UIE equivalent amount of fundamental elements such as hydrogen helium and lithium. The LINE hypothesis predicts that the UTE will produce circumstantially less of the fundamental elements, ergo; hydrogen, helium and lithium than predicted for the UIE. Calculations that estimate the quantity of initial fundamental hadronic elements currently do not anticipate the potentially numerous subsequent UTE cycles which create the current post UTE state of the universe. Predictably, this is because a UIE is more energetic than a UTE. Also, because the UIE involves more fundamental levels of the metaverse information states called the solutions of state (SoS) and their metaverse processes that are not achievable during any UTE phase. These differences create different outcomes. Given that today both the UIE sand UTE are considered to be the same ‘big bang’ event, calculated expectations that assume ‘big bang’ (post UIE-pre UTE) fundamental element quantities, will contradict measurements taken within any subsequent UTE expansion phase. So, if a contradiction between calculated expectations and observation of initial fundamental particle quantities is found to exist within ones’ current universe, The LINE hypothesis suggests that this is the indicator that this is a cyclic universe older than one universal transition cycle. Why would the current calculated population of pre-fusion fundamental particles not reflect the current measured quantity? This is because the calculated quantities may consider universal constants that were forged not during any prior UTE, but during the UIE. There are universal constants that are instantiated during the UIE which may remain unchanged through each UTE. During each UTE, some, not all, universal constants become reinstantiated. Therefore, such indigenous fixed universal constants will yield an accurate calculated particle population created only in the UIE phase. Subsequent UTE phases will not create a fundamental particle population that is consistent with this calculated quantity. Such fixed universal constants may determine the existence of the types of matter (hadronic, leptonic, debytonic etc.) that will exist within the new verse. Such matter types will populate all future cycles of the current verse, in any quantity. Such fixed-constants do not determine the quantity of matter created by each UTE phase. It falls to other non-fixed constants reinitialized during each UTE together with the informational content and circumstances of the prior contraction phase to determine the details of the next universal expansion. The LINE hypothesis proposes that UTE’s instantiate galaxoids that typically evolve into galaxies. This places a minimum limit on the initial state (mass, size, gravitation, etc.) of galaxy formation to that of a typical galaxoid. Below this minimum only the central primordial black hole exists, having any possible size. Such primordial black holes that do not form a galaxoid could still rarely, circumstantially seed a new galaxy. After each UTE, galaxoids circumstantially emerge with different accumulations of information as its’ encompassing WOF halo. WOF halos having different masses and densities encompassing a central black hole forms galaxoids that begin their long evolution into galaxies. Hence, because galaxies don’t evolve from dust, galaxies will be observed to have larger than expected initial masses and sizes and will appear more evolved at the earliest observable stages of universal expansion. Nimble minded astronomers and cosmologists will not need to think very deeply to identify one non-fixed constant, namely the Hubble constant. Explainable by the LINE hypothesized description of the UIE and UTE metaverse phenomena is the current observed inconsistencies in measurements of the value of the Hubble constant. Inconsistent estimates for the value of the Hubble constant derive from calculations based upon properties of the current CMB compared to calculations from measurements of stellar luminosity profiles. Inexplicably, each give sufficiently different values for the Hubble constant to raise concerns. The LINE hypothesis proposes that the discrepancy in the current estimates of the Hubble constant is a consequence of the UIE which produced the universal first-light now referred to as the cosmic microwave background (CMB). The CMB encodes not only aspects of the UIE’s first-light but the current CMB also encodes the transition-light of all subsequent UTE phases. This is because aspects of the first-light will survive each UTE. Consequently, an improperly decoded CMB will not accurately describe the current post UTE universal expansion profile described as the Hubble constant. The original (post-UIE, pre-UTE) CMB would predict the correct Hubble constant only for features observed within the initial phase of universal evolution. CMB profiles subsequent to the first-light of the initial universal expansion is called transition-light. Elder CMB’s will have been imprinted by the transition-light of each subsequent UTE. Additionally, stellar luminosity profiles are informed only by the previous universal event. Each, on its face, will inform a different value for the Hubble constant if not correctly considered in calculations and measurements taken within any phase of universal evolution, not only for the Hubble constant, but for any dynamic property of this universe. {LIVE Science; Forums, History and Culture; Culture History & Science; What is a living individual and is it naturally universally mobile?}

  • @liviamillin9333
    @liviamillin9333 ปีที่แล้ว

    New subscriber here keep it up!!! You should use a service such as "Promo sm"!!