Transient domain walls and lepton asymmetry in the left-right symmetric model
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Transient domain walls and lepton asymmetry in the left-right symmetric model
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Creator |
CLINE, JM
YAJNIK, UA NAYAK, SN RABIKUMAR, M |
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Subject |
nonlocal electroweak baryogenesis
weak phase-transition baryon asymmetry standard model neutrino masses non-conservation cp violation universe number cosmology |
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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.
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Publisher |
AMERICAN PHYSICAL SOC
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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 |
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Type |
Article
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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 |
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Language |
en
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