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pro vyhledávání: '"Garny, M."'
The lack of convergence of the convolution integrals appearing in next-to-leading-power (NLP) factorization theorems prevents the applications of existing methods to resum power-suppressed large logarithmic corrections in collider physics. We conside
Externí odkaz:
http://arxiv.org/abs/2205.04479
Treating dark matter at large scales as an effectively viscous fluid provides an improved framework for the calculation of the density and velocity power spectra compared to the standard assumption of an ideal pressureless fluid. We discuss how this
Externí odkaz:
http://arxiv.org/abs/1609.03466
Publikováno v:
Phys. Rev. D 94, 055026 (2016)
The perturbative effective potential suffers infrared (IR) divergences in gauges with massless Goldstones in their minima (like Landau or Fermi gauges) but the problem can be fixed by a suitable resummation of the Goldstone propagators. When the pote
Externí odkaz:
http://arxiv.org/abs/1607.08432
In this work we study thermal leptogenesis using non-equilibrium quantum field theory. Starting from fundamental equations for correlators of the quantum fields we describe the steps necessary to obtain quantum kinetic equations for quasiparticles. T
Externí odkaz:
http://arxiv.org/abs/1211.2140
Using the closed-time-path formalism we quantify gradient corrections to the kinetic equations for leptogenesis, that are neglected in the standard Boltzmann approach. In particular we show that an additional CP-violating source term arises, which is
Externí odkaz:
http://arxiv.org/abs/1005.5385
Publikováno v:
Phys.Rev.D81:085028,2010
In two recent papers, arXiv:0909.1559 and arXiv:0911.4122, it has been demonstrated that one can obtain quantum corrected Boltzmann kinetic equations for leptogenesis using a top-down approach based on the Schwinger-Keldysh/Kadanoff-Baym formalism. T
Externí odkaz:
http://arxiv.org/abs/1002.0331
Publikováno v:
Phys.Rev.D81:085027,2010
In the baryogenesis via leptogenesis scenario the self-energy contribution to the CP-violating parameter plays a very important role. Here, we calculate it in a simple toy model of leptogenesis using the Schwinger-Keldysh/Kadanoff-Baym formalism as s
Externí odkaz:
http://arxiv.org/abs/0911.4122
Publikováno v:
Phys.Rev.D80:125027,2009
The generation of a baryon asymmetry via leptogenesis is usually studied by means of classical kinetic equations whose applicability to processes in the hot and expanding early universe is questionable. The approximations implied by the state-of-the-
Externí odkaz:
http://arxiv.org/abs/0909.1559
We determine the wavefunctions of electrons bound to a positively charged mesoscopic metallic cluster covered by an insulating surface layer. The radius of the metal core and the thickness of the insulating surface layer are of the order of a couple
Externí odkaz:
http://arxiv.org/abs/cond-mat/0311377
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