Results 21 to 30 of about 9,158,519 (175)
Journal of High Energy Physics, 2021 We study neutral fermions pair creation with anomalous magnetic moment from the vacuum by time-independent magnetic-field inhomogeneity as an external background. We show that the problem is technically reduced to the problem of charged-particle creation
T. C. Adorno +3 more
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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. +2 more
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Exploring the θ-vacuum structure in the functional renormalization group approach
Journal of High Energy Physics, 2022 We investigate the θ-vacuum structure and the ’t Hooft anomaly at θ = π in a simple quantum mechanical system on S 1 to scrutinize the applicability of the functional renormalization group (fRG) approach.
Kenji Fukushima +2 more
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Enhanced nonperturbative effects through the collinear anomaly. [PDF]
, 2014 We show that nonperturbative effects are logarithmically enhanced for transverse-momentum-dependent observables such as qT spectra of electroweak bosons in hadronic collisions and jet broadening at e+ e- colliders.
Becher, Thomas +3 more
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Nonperturbative Effect of Attractive Forces in Viscous Liquids [PDF]
Physical Review Letters, 2009 4 pages, 3 ...
Berthier, Ludovic, Tarjus, Gilles
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Regularization in nonperturbative extensions of effective field theory
Physical Review D, 2022 The process of renormalisation in nonperturbative Hamiltonian Effective Field Theory (HEFT) is examined in the $Δ$-resonance scattering channel. As an extension of effective field theory incorporating the Lüscher formalism, HEFT provides a bridge between the infinite-volume scattering data of experiment and the finite-volume spectrum of energy ...
Curtis D. Abell +3 more
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Unitary quantization of a scalar charged field and Schwinger effect
Journal of High Energy Physics, 2020 Quantum field theory in curved spacetimes suffers in general from an infinite ambiguity in the choice of Fock representation and associated vacuum. In cosmological backgrounds, the requirement of a unitary implementation of the field dynamics in the ...
Luis J. Garay +2 more
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Nonperturbative effects in a rapidly expanding quark gluon plasma [PDF]
, 2002 Within first-order phase transitions, we investigate pretransitional effects due to the nonperturbative, large-amplitude thermal fluctuations which can promote phase mixing before the critical temperature is reached from above.
P. Shukla +5 more
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Quantum distillation of Hilbert spaces, semi-classics and anomaly matching
Journal of High Energy Physics, 2018 A symmetry-twisted boundary condition of the path integral provides a suitable framework for the semi-classical analysis of nonperturbative quantum field theories (QFTs), and we reinterpret it from the viewpoint of the Hilbert space. An appropriate twist
Gerald V. Dunne +2 more
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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
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