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Transient domain walls and lepton asymmetry in the left-right symmetric model

DSpace at IIT Bombay

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Title Transient domain walls and lepton asymmetry in the left-right symmetric model
 
Creator CLINE, JM
YAJNIK, UA
NAYAK, SN
RABIKUMAR, M
 
Subject nonlocal electroweak baryogenesis
weak phase-transition
baryon asymmetry
standard model
neutrino masses
non-conservation
cp violation
universe
number
cosmology
 
Description It is shown that the dynamics of domain walls in left-right symmetric models, separating respective regions of unbroken SU(2)(L) and SU(2)(R) in the early universe, can give rise to baryogenesis via leptogenesis. Neutrinos have a spatially varying complex mass matrix due to CP-violating scalar condensates in the domain wall. The motion of the wall through the plasma generates a flux of lepton number across the wall which is converted to a lepton asymmetry by helicity-flipping scatterings. Subsequent processing of the lepton excess by sphalerons results in the observed baryon asymmetry, for a range of parameters in left-right symmetric models.
 
Publisher AMERICAN PHYSICAL SOC
 
Date 2011-07-18T09:14:56Z
2011-12-26T12:50:31Z
2011-12-27T05:35:44Z
2011-07-18T09:14:56Z
2011-12-26T12:50:31Z
2011-12-27T05:35:44Z
2002
 
Type Article
 
Identifier PHYSICAL REVIEW D, 66(6), -
0556-2821
http://dx.doi.org/10.1103/PhysRevD.66.065001
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4858
http://hdl.handle.net/10054/4858
 
Language en