Gravity and BF theory defined in bounded regions

被引：25
|
作者：
Husain, V
Major, S
机构：
[1] Ctr. for Gravitational Phys./Geom., Department of Physics, Pennsylvania State University, University Park
来源：
NUCLEAR PHYSICS B | 1997年 / 500卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
BLACK-HOLE; GENERAL-RELATIVITY; GRAVITATIONAL ACTION; FIELD-THEORY; EDGE STATES; VARIABLES; MECHANICS; ENTROPY; ENERGY; SYSTEM;
D O I：
10.1016/S0550-3213(97)00371-4
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We study Einstein gravity in a finite spatial region. By requiring a well-defined variational principle, we identify all local boundary conditions, derive surface observables, and compute their algebra. The observables arise as induced surface terms, which contribute to a non-vanishing Hamiltonian. Unlike the asymptotically flat case, we find that there are an infinite number of surface observables. We give a similar analysis for SU(2) BF theory. (C) 1997 Elsevier Science B.V.
引用
收藏
页码：381 / 401
页数：21
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