论文标题
在不同真空的热辐射下,de de的不稳定
Instability of de Sitter space under thermal radiation in different vacua
论文作者
论文摘要
我们研究了在不同真空中的热辐射下De Sitter时空(DS)的不稳定性。我们认为,在四维DS中标量字段的模式函数解可以分离为传入和传出模式。 DS的不同真空通过分配给每个解决方案的正频率模式的不同组合来实现。对于最小耦合的无质量标量场,我们明确计算模式函数的行为以及在地平线附近的Unruh真空中的相应能量弹药张量,并发现地平线面积在收入(即将出现的)模式会导致热量流量的时间内增加(减小)。
We study the instability of de Sitter space-time (dS) under thermal radiation in different vacua. We argue that the mode function solution of a scalar field in four-dimensional dS can be separated into the incoming and outgoing modes. Different vacua for dS are realized by different combinations of positive frequency modes assigned to each solution. For a minimally coupled massless scalar field, we explicitly compute the behavior of the mode function and the corresponding energy-momentum tensor in the Unruh vacuum near the horizon, and find that the horizon area increases (decreases) in time when the incoming (outgoing) mode contributes to thermal flux.