Results 21 to 30 of about 582,899 (222)
Scattering amplitudes and electromagnetic horizons
Journal of High Energy Physics, 2023 We consider the scattering of charged particles on particular electromagnetic fields which have properties analogous to gravitational horizons. Classically, particles become causally excluded from regions of spacetime beyond a null surface which we ...
Anton Ilderton, William Lindved
doaj +1 more source
CFT description of BH’s and ECO’s: QNMs, superradiance, echoes and tidal responses
Journal of High Energy Physics, 2022 Using conformal field theory and localization tecniques we study the propagation of scalar waves in gravity backgrounds described by Schrödinger like equations with Fuchsian singularities.
Dario Consoli +3 more
doaj +1 more source
Nonperturbative Effects of Divergent Ghost Loops [PDF]
Acta Physica Polonica B Proceedings Supplement, 2014 6 pages, 3 figures; contribution to the Workshop "Excited QCD 2014'', Bjelasnica (Sarajevo) February 2-8 ...
Daniele Binosi, David Ibanez
openaire +3 more sources
Revealing Nonperturbative Effects in the SYK Model [PDF]
Theoretical and Mathematical Physics, 2019 We study the large $N$ saddle points of two SYK chains coupled by an interaction that is nonlocal in Euclidean time. We start from analytic treatment of the free case with $q=2$ and perform the numerical study of the interacting case $q=4$. We show that in both cases there is a nontrivial phase structure with infinite number of phases.
Mikhail Khramtsov +2 more
openaire +3 more sources
Quantum unitary dynamics of a charged fermionic field and Schwinger effect
Journal of High Energy Physics, 2021 In quantum field theory, particle creation occurs, in general, when an intense external field, such as an electromagnetic field, breaks time translational invariance. This leads to an ambiguity in the definition of the vacuum state.
Álvaro Álvarez-Domínguez +3 more
doaj +1 more source
Gentle introduction to rigorous Renormalization Group: a worked fermionic example
Journal of High Energy Physics, 2021 Much of our understanding of critical phenomena is based on the notion of Renormalization Group (RG), but the actual determination of its fixed points is usually based on approximations and truncations, and predictions of physical quantities are often of
Alessandro Giuliani +2 more
doaj +1 more source
Journal of High Energy Physics, 2023 Nonlinear sigma models on de Sitter background have proved a useful prototype for quantum gravity in summing the large logarithms which arise from loop corrections.
R. P. Woodard, B. Yesilyurt
doaj +1 more source
Nonperturbative Effect of Attractive Forces in Viscous Liquids [PDF]
Physical Review Letters, 2009 4 pages, 3 ...
Berthier, Ludovic, Tarjus, Gilles
openaire +5 more sources
Journal of High Energy Physics, 2021 We calculate, for the first time, the NNLO QCD corrections to identified heavy hadron production at hadron colliders. The calculation is based on a flexible numeric framework which allows the calculation of any distribution of a single identified heavy ...
Michał Czakon +3 more
doaj +1 more source
The Exact WKB analysis and the Stokes phenomena of the Unruh effect and Hawking radiation
Journal of High Energy Physics, 2022 The physical observables of quantum theory can be described by perturbation theory, which is often given by diverging power series. This divergence is connected to the existence of non-perturbative phenomena, where resurgence allows us to study this ...
Seishi Enomoto, Tomohiro Matsuda
doaj +1 more source