Cosmological Moduli Problem and Thermal Inflation Models

Details Cosmological Moduli Problem and Thermal Inflation Models Cosmological Moduli Problem and Thermal Inflation Models

1999-05-24

arxiv.org/abs/hep-ph/9905467v1

Phys.Rev. D60 (1999) 123509

Physics

High Energy Physics

High Energy Physics - Phenomenology

49 pages, 17 figures

Scientific paper

10.1103/PhysRevD.60.123509

In superstring theories, there exist various dilaton and modulus fields which masses are expected to be of the order of the gravitino mass $m_{3/2}$. These fields lead to serious cosmological difficulties, so called ``cosmological moduli problem'', because a large number of moduli particles are produced as the coherent oscillations after the primordial inflation. We make a comprehensive study whether the thermal inflation can solve the cosmological moduli problem in the whole modulus mass region $m_\phi \sim 10 eV - 10^4 GeV$ predicted by both hidden sector supersymmetry (SUSY) breaking and gauge-mediated SUSY breaking models. In particular, we take into account the primordial inflation model whose reheating temperature is so low that its reheating process finishes after the thermal inflation ends. We find that the above mass region $m_\phi (\simeq m_{3/2}) \sim 10 eV - 10^4 GeV$ survives from various cosmological constraints in the presence of the thermal inflation.

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