Dilaton destabilization at high temperature

被引：69

作者：

Buchmüller, W ^{[1
]}

Hamaguchi, K ^{[1
]}

Lebedev, O ^{[1
]}

Ratz, A ^{[1
]}

机构：

[1] DESY, D-22603 Hamburg, Germany

来源：

NUCLEAR PHYSICS B | 2004年 / 699卷 / 1-2期

关键词：

D O I：

10.1016/j.nuclphysb.2004.08.031

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Many compactifications of higher-dimensional supersymmetric theories have approximate vacuum degeneracy. The associated moduli fields are stabilized by non-perturbative effects which break supersymmetry. We show that at finite temperature the effective potential of the dilaton acquires a negative linear term. This destabilizes all moduli fields at sufficiently high temperature. We compute the corresponding critical temperature which is determined by the scale of supersymmetry breaking, the beta-function associated with gaugino condensation and the curvature of the Kahler potential, T-crit similar to rootm(3/2)M(P)(3/beta)K-3/4"(-1/4). For realistic models we find T-crit similar to 10(11)-10(12) GeV, which provides an upper bound on the temperature of the early universe. In contrast to other cosmological constraints, this upper bound cannot be circumvented by late-time entropy production. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：292 / 308

页数：17

共 42 条

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