Results 141 to 150 of about 11,408,683 (276)

Quantum fermion superradiance and vacuum ambiguities on charged black holes

Journal of High Energy Physics
Unlike a classical charged bosonic field, a classical charged fermion field on a static charged black hole does not exhibit superradiant scattering. We demonstrate that the quantum analogue of this classical process is however present.
Álvaro Álvarez-Domínguez, Elizabeth Winstanley   +1 more
doaj   +1 more source

Perturbativity vs nonperturbativity in QED-effects for H-like atoms with Zα > 1 [PDF]

, 2017
A. Roenko, K. Sveshnikov
openalex   +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

Squeezing, chaos and thermalization in periodically driven quantum systems: the case of bosonic preheating

Journal of High Energy Physics
The phenomena of Squeezing and chaos have recently been studied in the context of inflation. We apply this formalism in the post-inflationary preheating phase.
Ayan Chakraborty, Debaprasad Maity
doaj   +1 more source

Nonperturbative region of effective strong coupling

, 2013
In the framework of Poincar covariant quark model the behavior of running coupling constant $ _{s}\left(Q^{2}\right)$ is considered in $Q < 1 \mbox{GeV}$ region. An analysis was carried out for pseudoscalar and vector mesons with lepton decay constants, masses (obtained from model dependent) and nucleon spin rules required to match their ...
openaire   +2 more sources

Nonperturbative Effects in 2D String Theory or, Beyond the Liouville Wall [PDF]

, 1997
Ram Brustein, Burt A. Ovrut
openalex   +1 more source

Nonperturbative effects in supergravity

, 2006
A promising candidate for a fundamental theory of nature, incorporating both general relativity and quantum mechanics, is string theory. This theory is based on one-dimensional extended objects that move through spacetime. However, string theory is most naturally formulated in ten dimensions.
openaire   +1 more source

Universality of Nonperturbative Effects in Event Shapes

, 2006
4 pages; to appear in the Proceedings of the FRIF Workshop on First Principles Non-Perturbative QCD of Hadron Jets (Paris, 12-14 January 2006); ReVTeX4, uses slac_one.rtx (included)
Lee, Christopher, Sterman, George
openaire   +2 more sources

Nonperturbative heat kernel and nonlocal effective action

, 2004
42 pages, based on the talk given at the Workshop "Gravity in Two Dimensions", Erwin Schroedinger Institute for Mathematical Physics, Vienna, October 2003 (preprint ESI-1444)
Barvinsky, A. O., Nesterov, D. V.
openaire   +2 more sources

Nonperturbative effects in semileptonicBcdecays [PDF]

, 2002
Thomas Mannel, S. Wolf
openalex   +1 more source