Results 31 to 40 of about 582,899 (222)
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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States of low energy in the Schwinger effect
Journal of High Energy Physics, 2023 States of low energy in cosmology minimise the energy density when smeared in a chosen time interval. We extend such construction to generic homogeneous (possibly anisotropic) particle creation settings.
Álvaro Álvarez-Domínguez +3 more
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Nonperturbative effects and nonperturbative definitions in matrix models and topological strings [PDF]
Journal of High Energy Physics, 2008 We develop techniques to compute multi-instanton corrections to the 1/N expansion in matrix models described by orthogonal polynomials. These techniques are based on finding trans-series solutions, i.e. formal solutions with exponentially small corrections, to the recursion relations characterizing the free energy.
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Nonperturbative Quantum Electrodynamics in the Cherenkov Effect [PDF]
Physical Review X, 2018 Quantum electrodynamics (QED) is one of the most precisely tested theories in the history of science, giving accurate predictions to a wide range of experimental observations. Recent experimental advances allow for the ability to probe physics on extremely short attosecond timescales, enabling ultrafast imaging of quantum dynamics.
Roques-Carmes, Charles +4 more
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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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Nonperturbative decoupling and effective field theory [PDF]
Physical Review D, 1995 12 pages no figures.
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Quantum-induced trans-Planckian energy near horizon
Journal of High Energy Physics, 2018 We study the loop effects on the geometry and boundary conditions of several black hole spacetimes one of which is time-dependent and analyze the energy measured by an infalling observer near their horizons.
A. J. Nurmagambetov, I. Y. Park
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Scattering amplitudes from dispersive iterations of unitarity
Journal of High Energy Physics, 2023 We present and numerically implement a computational method to construct relativistic scattering amplitudes that obey analyticity, crossing, elastic and inelastic unitarity in three and four spacetime dimensions.
Piotr Tourkine, Alexander Zhiboedov
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Journal of High Energy Physics, 2019 In this paper we consider external current QED in the Coulomb gauge and in axial gauges for various spatial directions of the axis. For a non-zero electric charge of the current, we demonstrate that any two different gauges from this class correspond to ...
Wojciech Dybalski, Benedikt Wegener
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Nonperturbative QED effective action at finite temperature [PDF]
Physical Review D, 2010 RevTex4, 6pages, no figure; replaced by the version to be published in Phys.
Hyun Lee, Yongsung Yoon, Sang Pyo Kim
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