Results 21 to 30 of about 36,882 (207)

Nonperturbative Effects on Nucleation [PDF]

Physical Review Letters, 1996
Latex, 8 pages, 2 postscript figures, submitted to PRL. Also available at http://fnas08.fnal.gov/
Gleiser, Marcelo, Heckler, Andrew F.
openaire   +3 more sources

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

Nonperturbative effect in threshold resummation [PDF]

Journal of High Energy Physics, 2009
JHEP06(2009 ...
Li, Chong Sheng, Li, Zhao, Yuan, C. -P.
openaire   +2 more sources

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, Francesco Fucito, Jose Francisco Morales, Rubik Poghossian   +3 more
doaj   +1 more source

Critical behavior of the 2d scalar theory: resumming the N8LO perturbative mass gap

Journal of High Energy Physics, 2021
We apply the optimized perturbation theory (OPT) to resum the perturbative series describing the mass gap of the bidimensional ϕ 4 theory in the ℤ2 symmetric phase.
Gustavo O. Heymans, Marcus Benghi Pinto
doaj   +1 more source

Remembrance of things past

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

Theory and modeling of nonperturbative effects in thermoviscous acoustofluidics [PDF]

Physical Review E, 2023
A theoretical model of thermal boundary layers and acoustic heating in microscale acoustofluidic devices is presented. Based on it, an iterative numerical model is developed that enables numerical simulation of nonlinear thermoviscous effects due to acoustic heating and thermal advection.
Jonas Helboe Joergensen, Henrik Bruus
openaire   +2 more sources

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, Vieri Mastropietro, Slava Rychkov   +2 more
doaj   +1 more source

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.
Aref'eva, I. Ya., Volovich, I. V., Khramtsov, M. A.   +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, Luis J. Garay, David García-Heredia, Mercedes Martín-Benito   +3 more
doaj   +1 more source