TY - JOUR
T1 - Cosmological moduli problem in low cutoff theory
AU - Nakayama, Kazunori
AU - Takahashi, Fuminobu
AU - Yanagida, Tsutomu T.
PY - 2012/8/3
Y1 - 2012/8/3
N2 - We show that the cosmological moduli problem is solved without relying on huge late-time entropy production, if the universal cutoff scale of the theory is a few orders of magnitude smaller than the Planck scale. We obtain a general estimate of the modulus abundance in terms of the inflationary scale and reheating temperature, and find, in particular, that the reheating temperature can be high enough for nonthermal leptogenesis to work.
AB - We show that the cosmological moduli problem is solved without relying on huge late-time entropy production, if the universal cutoff scale of the theory is a few orders of magnitude smaller than the Planck scale. We obtain a general estimate of the modulus abundance in terms of the inflationary scale and reheating temperature, and find, in particular, that the reheating temperature can be high enough for nonthermal leptogenesis to work.
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U2 - 10.1103/PhysRevD.86.043507
DO - 10.1103/PhysRevD.86.043507
M3 - Article
AN - SCOPUS:84864934674
SN - 1550-7998
VL - 86
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 4
M1 - 043507
ER -