2023-06-02
16:57 |
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Detector challenges of the strong-field QED experiment LUXE at the European XFEL
/ Wing, Matthew (speaker) (University College London)
The LUXE experiment aims at studying high-field QED in electron-laser and photon-laser interactions, with the 16.5 GeV electron beam of the European XFEL and a laser beam with power of up to 350 TW. The experiment will measure the spectra of electrons, positrons and photons in expected ranges of 10^−3 to 10^9 per 1 Hz bunch crossing, depending on the laser power and focus. [...]
2023 - 0:58:20.
Detector Seminar
External link: Event details
In : Detector challenges of the strong-field QED experiment LUXE at the European XFEL
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2023-05-31
08:47 |
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Searching for Lepton Flavor Violation with CMS Run 2 data
/ Wang, Jian (speaker) (University of Florida (US))
Lepton flavor universality (LFU) is deeply ingrained in the symmetry structure of the Standard Model (SM) but it could be violated in theories of physics beyond the SM. Searches for lepton flavor violation (LFV) have been performed at past and current experiments at particle colliders [...]
2023 - 0:51:34.
LHC Seminar
External link: Event details
In : Searching for Lepton Flavor Violation with CMS Run 2 data
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2023-05-24
09:58 |
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Spectra, reconstructions and pole-skipping
/ Grozdanov, Sašo (speaker) (University of Edinburgh)
The poles of two-point functions in momentum space, which can be computed and analysed using holographic methods, reveal various details of the physical properties of spectra in QFTs. In thermal QFTs, the lowest-energy (IR) gapless mode is usually described by the theory of hydrodynamics. [...]
2023 - 1:13:44.
TH String Theory Seminar
External link: Event details
In : Spectra, reconstructions and pole-skipping
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2023-05-22
09:59 |
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Space charge in liquid ionisation detectors
/ Palestini, Sandro (speaker) (CERN)
The subject of space charge in HEP particle detectors became relevant first with large gaseous TPCs, while new interest came with liquid ionisation detectors, namely liquid krypton or liquid argon calorimeters operated at high intensity, and large liquid argon TPCs for neutrino experiments. In liquid media, positive ions are produced over the full detector volume, and the approach of grids as ion gates used in gas-multiplication detectors is not suitable. [...]
2023 - 1:05:32.
Detector Seminar
External link: Event details
In : Space charge in liquid ionisation detectors
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2023-05-22
09:43 |
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Quantum field simulator for dynamics in curved spacetime
/ Floerchinger, Stefan (speaker) (University of Jena)
Quantum fields in curved spacetimes have many tantalizing theoretical properties, for example particles are being produced by the time-dependence of the geometry. I will describe how quantum fields in geometries with spacetime curvature and different cosmologies can be quantum-simulated with Bose-Einstein condensates in specifically designed trapping potentials and with time-dependent interaction strengths. [...]
2023 - 1:03:54.
Theory Colloquia
External link: Event details
In : Quantum field simulator for dynamics in curved spacetime
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2023-05-19
14:12 |
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Model/dataset compression for optimizing the efficiency of deep networks
/ Osadchy, Margarita (speaker) (University of Haifa (IL))
Despite the unprecedented success of deep networks in recent years, the massive size of these models and the enormous data required for training them increase the burden on storage, transmission and model training as the latter requires enormous computational costs. Even a trained model requires high performance hardware to perform inference. [...]
2023 - 1:01:40.
EP-IT Data Science Seminars
External link: Event details
In : Model/dataset compression for optimizing the efficiency of deep networks
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2023-05-17
14:32 |
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The statistics of spins for CFTs
/ Benjamin, Nathan (speaker) (Caltech)
I will discuss universal behavior of CFT data at high energies. In particular I will discuss universal formulas for both the entropy and the three-point-functions of local operators for d-dimensional CFT (d>2) as a function of energy and spin, using a technique called thermal effective field theory. [...]
2023 - 1:09:35.
TH String Theory Seminar
External link: Event details
In : The statistics of spins for CFTs
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2023-05-17
11:09 |
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2023-05-11
09:16 |
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The Vcb puzzle -- Flavour TH Institute
/ Gambino, Paolo (speaker)
The long-lasting discrepancy between the inclusive and exclusive determinations of the CKM element Vcb is an unlikely signal of New Physics, but it hampers significantly the precision program in flavour physics. I will review our understanding of inclusive and exclusive semileptonic b to charm decays and discuss recent theoretical and experimental progress, as well as future prospects..
2023 - 1:13:09.
Theory Colloquia
External link: Event details
In : The Vcb puzzle -- Flavour TH Institute
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2023-05-10
10:46 |
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Bethe ansatz in 2d conformal field theory
/ Procházka, Tomáš (speaker) (Institute of Physics, Prague)
The usual approach to study 2d CFT relies on the Virasoro algebra and its representation theory. Moving away from the criticality, this infinite dimensional symmetry is lost so it is useful to have a look at 2d CFTs from more general framework of quantum integrability. Every 2d conformal field theory has a natural infinite dimensional family of commuting higher spin Hamiltonians that can be constructed out of Virasoro generators. [...]
2023 - 1:07:19.
TH String Theory Seminar
External link: Event details
In : Bethe ansatz in 2d conformal field theory
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