Cosmological Moduli Problem and Thermal Inflation Models
Cosmological Moduli Problem and Thermal Inflation Models
复制标题
宇宙模量问题和热膨胀模型
DOI：
10.1103/physrevd.60.123509
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发表时间：
1999
影响因子：
5
通讯作者：
M. Kawasaki
中科院分区：
文献类型：
--
作者：
T. Asaka;M. Kawasaki
在超弦理论中，存在着各种质量被期望为引力子质量m_{3/2}量级的介子场和模场。这些场导致了严重的宇宙学困难，所谓的“宇宙学模问题”，因为大量的模粒子作为原始暴胀后的相干振荡产生。我们对热膨胀是否能解决由超对称性破缺模型和规范介导的超对称性破缺模型所预言的10 eV - 10^4 GeV全模质量区的宇宙学模问题进行了全面的研究.特别地，我们考虑了原始暴胀模型，其再加热温度如此之低，以至于它的再加热过程在热暴胀结束后才完成。我们发现，在热膨胀存在的情况下，上述质量区域m\phi（\simeq m_{3/2}）\sim 10 eV - 10^4 GeV$不受各种宇宙学约束.
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.