Stress-energy tensor correlators of a quantum field in Euclidean R^N and AdS^N spaces via the generalized zeta-function method
學年 100
學期 1
出版（發表）日期 2011-08-09
作品名稱 Stress-energy tensor correlators of a quantum field in Euclidean R^N and AdS^N spaces via the generalized zeta-function method
作品名稱（其他語言）
著者 Cho, H. T.; Hu, B. L.
單位 淡江大學物理學系
出版者 College Park: American Physical Society
著錄名稱、卷期、頁數 Physical Review D 84(4), 044032(18pages)
摘要 In this paper we calculate the vacuum expectation values of the stress-energy bitensor of a massive quantum scalar field with general coupling to N-dimensional Euclidean spaces and hyperbolic spaces which are Euclidean sections of the anti-de Sitter spaces. These correlators, also known as the noise kernel, act as sources in the Einstein-Langevin equations of stochastic gravity [B. L. Hu and E. Verdaguer Living Rev. Relativity 11 3 (2008)][B. L. Hu and E. Verdaguer Classical Quantum Gravity 20 R1 (2003)] which govern the induced metric fluctuations beyond the mean-field dynamics described by the semiclassical Einstein equations of semiclassical gravity. Because these spaces are maximally symmetric the eigenmodes have analytic expressions which facilitate the computation of the zeta function [J. S. Dowker and R. Critchley Phys. Rev. D 13 224 (1976) J. S. Dowker and R. Critchley Phys. Rev. D 13 3224 (1976)][S. W. Hawking Commun. Math. Phys. 55 133 (1977)]. Upon taking the second functional variation of the generalized zeta function introduced in [N. G. Phillips and B. L. Hu Phys. Rev. D 55 6123 (1997)] we obtain the correlators of the stress tensor for these two classes of spacetimes. Both the short and the large geodesic distance limits of the correlators are presented for dimensions up to 11. We mention current research problems in early universe cosmology, black hole physics and gravity-fluid duality where these results can be usefully applied to.
關鍵字
語言 en
ISSN 1550-7998 1550-2368
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 曹慶堂 Cho, H. T.; Hu, B. L.
審稿制度 是
國別 USA
公開徵稿
出版型式 紙本
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