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arXiv 1007.5009astro-ph.COgr-qchep-th
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量子物质中的暗能量

Dark Energy from Quantum Matter

Claudio Dappiaggi, Thomas-Paul Hack, Jan Möller, Nicola Pinamonti

摘要:

研究了平坦Robertson-Walker时空中自由量子场的反反应。除了重整化自由度,真空能量还受到迹反常和量子态热性质的贡献。前者代表了暗能量的动态实现,而后者模拟了有效的暗物质成分。半经典动力学产生两类渐近稳定解。第一个再现了和谐模型在一个合适的制度。第二个缺乏一个经典的对应,但在最近的观察非常一致。

英文摘要:

We study the backreaction of free quantum fields on a flat Robertson-Walker spacetime. Apart from renormalization freedom, the vacuum energy receives contributions from both the trace anomaly and the thermal nature of the quantum state. The former represents a dynamical realisation of dark energy, while the latter mimics an effective dark matter component. The semiclassical dynamics yield two classes of asymptotically stable solutions. The first reproduces the concordance model in a suitable regime. The second lacks a classical counterpart, but is in excellent agreement with recent observations.

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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