Domain Walls and Gravitational Waves after Thermal Inflation

Details Domain Walls and Gravitational Waves after Thermal Inflation Domain Walls and Gravitational Waves after Thermal Inflation

2011-05-31

arxiv.org/abs/1105.6216v1

Phys.Lett.B703:160-166,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 2 figures

Scientific paper

10.1016/j.physletb.2011.07.075

Thermal inflation is an attractive solution to the cosmological moduli problem. However, domain walls may be formed after thermal inflation and some mechanisms are needed to eliminate the domain wall before it dominates the Universe. We point out that gravitational waves produced by the dynamics of domain walls may be observed by the pulsar timing experiments and future space-borne gravitational wave detectors, which provides a probe into the period of thermal inflation. We also show that the QCD instanton effect can effectively eliminate the domain walls with producing observable amount of gravitational waves.

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