| Description |
We consider salient cosmological features of a left-right
supersymmetric extension of standard model. The requirement of breaking parity and also obtaining charge preserving vacua introduces some unique features to this model (MSLRM), esulting in a preference for nonthermal leptogenesis. Assuming that the model preserves TeV scale supersymmetry, we show that the vacuum structure generically possesses domain walls, which can serve two important purposes. They can signal a secondary inflation required to remove unwanted relics such as gravitino and moduli and also generate lepton asymmetry by a mechanism similar to electroweak baryogenesis. The requirement of disappearance of domain walls imposes constraints on the soft parameters of the theory, potentially testable at the TeV scale.
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