Results 51 to 60 of about 36,882 (207)

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

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

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

Nonperturbative QCD Vacuum Effects in Nonlocal Quark Dynamics [PDF]

, 1997
A straightforward calculation reveals the essentially nonlocal character of the leading heavy $Q\bar{Q}$ interaction arising from nonperturbative gluon field correlations in the model of a fluctuating QCD vacuum.
A. Gara, A. Pineda, A.B. Henriques, A.M. Badalyan, C. Alabiso, C. Olson, C. Olson, D. Gromes, D. Gromes, D. Gromes, D. La Course, E. Eichten, H. Leutwyler, H.J. Schnitzer, K. Wilson, Ken Williams, M. Campostrini, M.B. Voloshin, M.G. Olsson, M.G. Olsson, N. Brambilla, N. Van-Hieu, N.G. Van Kampen, S. Capstick, S. Titard, T. Hofsäss, U. Das, U. Marquard, V.M. Kustov, W. Lucha, Yu.A. Simonov, Yu.A. Simonov   +31 more
core   +4 more sources

Nonperturbative effects in neutrino magnetic moments

Physical Review D, 2022
Typos corrected, affiliation, appendices and references added, matches published version in ...
Feng-Zhi Chen, Min-Di Zheng, Hong-Hao Zhang   +2 more
openaire   +2 more sources

On the Nature of Nonperturbative Effects in Stabilized 2D Quantum Gravity

, 1993
We remark that the weak coupling regime of the stochastic stabilization of 2D quantum gravity has a unique perturbative vacuum, which does not support instanton configurations.
Diego, Oscar, Gonzalez, Jose
core   +2 more sources

Hadronic corrections to μ-e scattering at NNLO with space-like data

Journal of High Energy Physics, 2019
The Standard Model prediction for μ-e scattering at Next-to-Next-to-Leading Order (NNLO) contains non-perturbative QCD contributions given by diagrams with a hadronic vacuum polarization insertion in the photon propagator.
Matteo Fael
doaj   +1 more source