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arXiv 1704.05076gr-qcastro-ph.COhep-th
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de Sitter空间中的多面Schwinger效应

Multifaceted Schwinger effect in de Sitter space

Ramkishor Sharma, Suprit Singh

摘要:

我们调查粒子生产拉Schwinger机制在一个不断扩大的,平坦的德西特补丁是相关的宇宙的暴胀时代。在弯曲时空中定义态和粒子含量当然不是一个独特的过程。关于如何做到这一点有不同的规定,我们使用薛定谔形式主义来定义状态的瞬时粒子含量等,这使我们能够超越绝热状态,在以前的研究中,这种效应被限制在绝热状态,并在不同的环境中表现出其多方面的性质。根据电场和膨胀率对瞬时平均颗粒数的影响,这些设置中的每一个都会产生对比特征和行为。我们还量化的经典程度的过程中,其演变过程中使用的“经典参数”构建的参数的维格纳函数,以获得有关的量子到经典的过渡在这种情况下的信息。

英文摘要:

We investigate particle production à la Schwinger mechanism in an expanding, flat de Sitter patch as is relevant for the inflationary epoch of our universe. Defining states and particle content in curved spacetime is certainly not a unique process. There being different prescriptions on how that can be done, we have used the Schrödinger formalism to define instantaneous particle content of the state etc. This allows us to go past the adiabatic regime to which the effect has been restricted in the previous studies and bring out its multifaceted nature in different settings. Each of these settings gives rise to contrasting features and behaviour as per the effect of electric field and expansion rate on the instantaneous mean particle number. We also quantify the degree of classicality of the process during its evolution using a "classicality parameter" constructed out of parameters of the Wigner function to obtain information about the quantum to classical transition in this case.

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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