Quantum leptogenesis I

Anisimov A, Buchmueller W, Drewes M, Mendizabal S (2011)
Annals of Physics 326(8): 1998-2038.

Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Zeitschriftenaufsatz | Veröffentlicht | Englisch
Autor
; ; ;
Abstract / Bemerkung
Thermal leptogenesis explains the observed matter-antimatter asymmetry of the universe in terms of neutrino masses, consistent with neutrino oscillation experiments. We present a full quantum mechanical calculation of the generated lepton asymmetry based on Kadanoff-Baym equations. Origin of the asymmetry is the departure from equilibrium of the statistical propagator of the heavy Majorana neutrino, together with CP violating couplings. The lepton asymmetry is calculated directly in terms of Green's functions without referring to "number densities". Compared to Boltzmann and quantum Boltzmann equations, the crucial difference are memory effects, rapid oscillations much faster than the heavy neutrino equilibration time. These oscillations strongly suppress the generated lepton asymmetry, unless the standard model gauge interactions, which cause thermal damping, are properly taken into account. We find that these damping effects essentially compensate the enhancement due to quantum statistical factors, so that finally the conventional Boltzmann equations again provide rather accurate predictions for the lepton asymmetry. (C) 2011 Elsevier Inc. All rights reserved.
Erscheinungsjahr
Zeitschriftentitel
Annals of Physics
Band
326
Zeitschriftennummer
8
Seite
1998-2038
ISSN
PUB-ID

Zitieren

Anisimov A, Buchmueller W, Drewes M, Mendizabal S. Quantum leptogenesis I. Annals of Physics. 2011;326(8):1998-2038.
Anisimov, A., Buchmueller, W., Drewes, M., & Mendizabal, S. (2011). Quantum leptogenesis I. Annals of Physics, 326(8), 1998-2038. doi:10.1016/j.aop.2011.02.002
Anisimov, A., Buchmueller, W., Drewes, M., and Mendizabal, S. (2011). Quantum leptogenesis I. Annals of Physics 326, 1998-2038.
Anisimov, A., et al., 2011. Quantum leptogenesis I. Annals of Physics, 326(8), p 1998-2038.
A. Anisimov, et al., “Quantum leptogenesis I”, Annals of Physics, vol. 326, 2011, pp. 1998-2038.
Anisimov, A., Buchmueller, W., Drewes, M., Mendizabal, S.: Quantum leptogenesis I. Annals of Physics. 326, 1998-2038 (2011).
Anisimov, Alexey, Buchmueller, W., Drewes, M., and Mendizabal, S. “Quantum leptogenesis I”. Annals of Physics 326.8 (2011): 1998-2038.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

arXiv: 1012.5821

Inspire: 882771

Suchen in

Google Scholar