Results 121 to 130 of about 3,202 (225)

Nonperturbative QED vacuum birefringence

Journal of High Energy Physics, 2017
In this paper we represent nonperturbative calculation for one-loop Quantum Electrodynamics (QED) vacuum birefringence in presence of strong magnetic field.
V.I. Denisov, E.E. Dolgaya, V.A. Sokolov
doaj   +1 more source

Nonperturbative effects in gluodynamics at T ≥ Tc

Physics Letters B, 1995
Abstract Contributions to gluon thermodynamics at temperature T > 0 due to a non-perturbative background field are calculated. The free energy is written as a double series in 1 N c and the strong coupling gs. The leading order contribution due to gluon loops in the nonperturbative background field contains explicitly the expectation ...
H.G Dosch, H.J Pirner, Yu.A Simonov
openaire   +1 more source

Nonperturbative effects of fermions in the SU(2) sector of the standard model [PDF]

, 1988
Some nonperturbative effects of fermions in the SU(2) sector of the standard model are studied on the lattice. The results from both analytic studies and numerical simulations with dynamical fermions are presented.
Lee, I-Hsiu
core  

The S-matrix bootstrap with neural optimizers. Part I. Zero double discontinuity

Journal of High Energy Physics
In this work, we develop machine learning techniques to study nonperturbative scattering amplitudes. We focus on the two-to-two scattering amplitude of identical scalar particles and study a toy model where we set the double discontinuity to zero ...
Mehmet Asım Gümüş, Damien Leflot, Piotr Tourkine, Alexander Zhiboedov   +3 more
doaj   +1 more source

Nonperturbative effects in deformation quantization

, 2000
4 pages ...
openaire   +2 more sources

Fermions and nonperturbative supersymmetry breaking in the one-dimensional superstring [PDF]

, 1992
The one-dimensional superstring of Marinari and Parisi is analyzed taking into account the fermionic sector. The original matrix model is reduced to a manifestly supersymmetric quantum mechanics of eigenvalues with an effective superpotential. Unlike the
Dabholkar, Atish
core   +1 more source

Nonperturbative delta N formalism [PDF]

, 2018
We revisit the question of how to calculate correlations of the curvature perturbation, ζ, using the δN formalism when one cannot employ a truncated Taylor expansion of N.
Rajantie, Arttu, Mulryne, David J, Imrith, Shailee V, Mulryne, DJ, Rajantie, A, Imrith, SV   +5 more
core   +1 more source

Tree-level correlations in the strong field regime

Journal of High Energy Physics, 2017
We consider the correlation function of an arbitrary number of local observables in quantum field theory, in situations where the field amplitude is large.
François Gelis
doaj   +1 more source

All-multiplicity amplitudes in impulsive PP-waves from the worldline formalism

Journal of High Energy Physics
We use the worldline formalism to derive Bern-Kosower type Master Formulae for the tree-level scattering of a charged particle and an arbitrary number of photons on impulsive PP-waves, where the coupling of the PP-wave to matter is treated fully non ...
Patrick Copinger, James P. Edwards, Anton Ilderton, Karthik Rajeev   +3 more
doaj   +1 more source

Nonperturbative Zou-Wang-Mandel effect

Physical Review A
The Zou-Wang-Mandel (ZWM) effect is a remarkable consequence of photon indistinguishability and continuous-variable entanglement in which an optical phase shift is imprinted on photonic modes associated with optical paths that that do not pass through the phase shift source.
T. J. Volkoff, Diego A. R. Dalvit
openaire   +2 more sources