暖平方向的各个方面
Aspects of warm-flat directions
摘要:
考虑到耗散慢卷机制已被用于暖膨胀的情况下,我们表明,耗散可能会改变通常的宇宙学方案与超对称性平坦的方向。我们主要考虑超对称平坦方向,这些方向与非平坦方向具有强相互作用,并且可能在热背景和非热背景中引起强耗散。一个例子是阿弗莱克-戴恩机制,在该机制中,耗散可能会在传统情景和耗散情景之间产生显著的(定性和定量)差异。我们还讨论了产生曲率微扰的几种机制,其中耗散场可以作为宇宙学扰动的源,这与暴胀子场不同。考虑到Morikawa-Sasaki耗散系数,即使耗散远离热平衡,由耗散引起的阻尼对于许多MSSM平坦方向也可能是显著的。
英文摘要:
Considering the mechanism of dissipative slow-roll that has been used in warm inflation scenario, we show that dissipation may alter usual cosmological scenarios associated with SUSY-flat directions. We mainly consider SUSY-flat directions that have strong interactions with non-flat directions and may cause strong dissipation both in thermal and non-thermal backgrounds. An example is the Affleck-Dine mechanism in which dissipation may create significant (both qualitative and quantitative) discrepancies between the conventional scenario and the dissipative one. We also discuss several mechanisms of generating curvature perturbations in which the dissipative field, which is distinguished from the inflaton field, can be used as the source of cosmological perturbations. Considering the Morikawa-Sasaki dissipative coefficient, the damping caused by the dissipation may be significant for many MSSM flat directions even if the dissipation is far from thermal equilibrium.
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