UNIGE document Scientific Article
previous document  unige:36498  next document
add to browser collection
Title

Quantum Boltzmann equations and leptogenesis

Authors
De Simone, Andrea
Published in Journal of Cosmology and Astroparticle Physics. 2007, vol. 2007, no. 08, p. 002-002
Abstract The closed time-path formalism is a powerful Green's function formulation to describe non-equilibrium phenomena in field theory and it leads to a complete non-equilibrium quantum kinetic theory. We make use of this formalism to write down the set of quantum Boltzmann equations relevant for leptogenesis. They manifest memory effects and off-shell corrections. In particular, memory effects lead to a time-dependent CP asymmetry whose value at a given instant of time depends upon the previous history of the system. This result is particularly relevant when the asymmetry is generated by the decays of nearly mass-degenerate heavy states, as in resonant or soft leptogenesis.
Keywords Baryon asymmetryCosmology of theories beyond the SM
Identifiers
Full text
Structures
Citation
(ISO format)
DE SIMONE, Andrea, RIOTTO, Antonio Walter. Quantum Boltzmann equations and leptogenesis. In: Journal of Cosmology and Astroparticle Physics, 2007, vol. 2007, n° 08, p. 002-002. https://archive-ouverte.unige.ch/unige:36498

165 hits

0 download

Update

Deposited on : 2014-05-12

Export document
Format :
Citation style :