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arXiv 2107.09671hep-phastro-ph.COgr-qchep-lat
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哈勃诱导的晶格相变及其在Ricci再加热中的应用

Hubble-induced phase transitions on the lattice with applications to Ricci reheating

Dario Bettoni, Asier Lopez-Eiguren, Javier Rubio

摘要:

使用3+1经典晶格模拟,我们遵循对称性破缺模式和随后的非线性演化的观众场非最小耦合到重力时,后暴胀动力学给出的刚性状态方程参数。我们发现,梯度能量密度过渡后立即代表一个不可忽略的总能量预算的一部分,稳步增长,等于动能对应。这种行为反映在相关的状态方程参数的演变,它接近一个普遍的价值$1/3$,独立的非线性相互作用的形状。结合kination,这一观察允许的辐射支配的任意自相互作用的潜力,显着扩展以前的结果在文献中的通用发病。然而,当时产生的光谱是非热的,排除了对温度等物理量的天真提取。观众场与标准模型希格斯的潜在标识进行了讨论。

英文摘要:

Using 3+1 classical lattice simulations, we follow the symmetry breaking pattern and subsequent non-linear evolution of a spectator field non-minimally coupled to gravity when the post-inflationary dynamics is given in terms of a stiff equation-of-state parameter. We find that the gradient energy density immediately after the transition represents a non-negligible fraction of the total energy budget, steadily growing to equal the kinetic counterpart. This behaviour is reflected on the evolution of the associated equation-of-state parameter, which approaches a universal value $1/3$, independently of the shape of non-linear interactions. Combined with kination, this observation allows for the generic onset of radiation domination for arbitrary self-interacting potentials, significantly extending previous results in the literature. The produced spectrum at that time is, however, non-thermal, precluding the naive extraction of thermodynamical quantities like temperature. Potential identifications of the spectator field with the Standard Model Higgs are also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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