Results 51 to 60 of about 36,776 (204)

Final State Interactions in WW Production [PDF]

, 1997
It is shown that colour transparency causes nonperturbative colour-singlet final-state interactions to have a negligible effect on the production rate and the dijet mass spectra in $e^+e^-\to WW$.
Donnachie, A, Landshoff, P V
core   +2 more sources

Topology in full QCD at high temperature: a multicanonical approach

Journal of High Energy Physics, 2018
We investigate the topological properties of N f = 2 + 1 QCD with physical quark masses, at temperatures around 500 MeV. With the aim of obtaining a reliable sampling of topological modes in a regime where the fluctuations of the topological charge Q are
Claudio Bonati, Massimo D’Elia, Guido Martinelli, Francesco Negro, Francesco Sanfilippo, Antonino Todaro   +5 more
doaj   +1 more source

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, Alberto García Martín-Caro, Mercedes Martín-Benito   +2 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

Perceptions of creativity amongst university design tutors [PDF]

, 2001
The possibility to suppress the nonperturbative effects choosing the vary high multiplicity final state is discussed.
Jones, Paul, Rodgers, Paul, Nicholl, Bill   +2 more
core   +2 more sources

B-hadron production in NNLO QCD: application to LHC t t ¯ $$ \overline{t} $$ events with leptonic decays

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, Terry Generet, Alexander Mitov, Rene Poncelet   +3 more
doaj   +1 more source

Instanton Corrections to Quark Form Factor at Large Momentum Transfer [PDF]

, 2002
Within the Wilson integral formalism, we discuss the structure of nonperturbative corrections to the quark form factor at large momentum transfer analyzing the infrared renormalon and instanton effects.
A. Bassetto, A. Dorokhov, A. Hasenfratz, A. Polyakov, A.E. Dorokhov, A.E. Dorokhov, Alexander E. Dorokhov, D. Kharzeev, E. Meggiolaro, E. Shuryak, E. Shuryak, E. Shuryak, E. Shuryak, F. Schrempp, G. Curci, G. Korchemsky, G. Korchemsky, G. Korchemsky, G. Korchemsky, G. Korchemsky, G. Korchemsky, G. Parisi, G. Sterman, G. ’t Hooft, I. Korchemskaya, I.I. Balitsky, I.I. Balitsky, Igor O. Cherednikov, J. Frenkel, J. Frenkel, J.G.M. Gatheral, J.M. Cornwall, L. Baulieu, L. Magnea, L. Magnea, M. Beneke, M. Nowak, N. Andrei, O. Nachtmann, P. Faccioli, R. Petronzio, R.A. Brandt, R.A. Brandt, S. Moch, S. Tafat, S.V. Mikhailov, T. Schäfer, T.R. Morris, V. Dotsenko, V.I. Zakharov, V.V. Belokurov, Yu. Dokshitzer, Yu.M. Makeenko, Yu.M. Makeenko   +53 more
core   +2 more sources

Asymptotic charges, large gauge transformations and inequivalence of different gauges in external current QED

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
doaj   +1 more source

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, Derek B. Leinweber, Anthony W. Thomas, Jia-Jun Wu   +3 more
openaire   +3 more sources

Hawking radiation of extended objects

Journal of High Energy Physics, 2020
We compute the effects on the temperature and precise spectrum of Hawking radiation from a Schwarzschild black hole when the emitted object is taken to be spatially extended.
George Johnson, John March-Russell
doaj   +1 more source