Dynamics of Domain Walls for Split and Runaway Potentials

Details Dynamics of Domain Walls for Split and Runaway Potentials Dynamics of Domain Walls for Split and Runaway Potentials

2007-10-05

arxiv.org/abs/0710.1233v1

Phys.Rev.D78:085020,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 9 figures

Scientific paper

10.1103/PhysRevD.78.085020

We demonstrate that the evolution of wall-like inhomogeneities in run-away potentials, characteristic of dynamical supersymmetry breaking and moduli stabilisation, is very similar to the evolution of domain wall networks associated with double well potentials. Instabilities that would lead to a rapid decay of domain walls can be significantly ameliorated by compensation effects between a non-degeneracy of the vacua and a biased initial distribution, which can be naturally expected in a wide class or particle physics models that lead to out-of-equilibrium phase transitions. Within this framework, it is possible to obtain domain walls that live long enough to be relevant for the cosmic power spectrum and galaxy clustering, while being compatible with the observed cosmic microwave background anisotropies.

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