论文标题

各向异性温暖通货膨胀

Anisotropic warm inflation

论文作者

Kanno, Sugumi, Mukuno, Ann, Soda, Jiro, Ueda, Kazushige

论文摘要

各向异性通胀是成功解释统计各向异性的模型。温暖的通货膨胀是一种成功提供通货膨胀期间再加热机制的模型。我们研究针对宇宙无头发猜想的各向异性温暖通货膨胀。在各向异性温暖的通货膨胀中,阐明了使各向异性生存的状况。通过假设耗散比的恒定值,我们找到了幂律各向异性温暖通货膨胀的精确溶液,并研究了一般溶液的相空间结构。事实证明,通货膨胀期间的各向异性是否存在取决于驱动各向异性通货膨胀的潜力的竞争,以抗体场的消散。如果衰减过程不有效,各向异性温暖的通货膨胀将实现。

Anisotropic inflation is a model succeeded in explaining statistical anisotropy. Warm inflation is a model succeeded in providing a mechanism of reheating during inflation. We study anisotropic warm inflation focusing on the cosmic no-hair conjecture. In the anisotropic warm inflation, the condition for making anisotropy survived is clarified. By assuming a constant value for the dissipation ratio, we find exact solutions of power-law anisotropic warm inflation, and investigate the phase space structure of general solutions. It turns out that whether the anisotropy during inflation survives or not depends on the competition of the potential that drive anisotropic inflation against dissipation of an inflaton field. Anisotropic warm inflation will be realized if the decaying process is not efficient.

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