GENERAL 1ST LAW AND THERMODYNAMICS OF HORIZON MATTER SYSTEMS

被引:6
作者
HAYWARD, G [1 ]
机构
[1] UNIV ALBERTA,INST THEORET PHYS,EDMONTON T6G 2J1,ALBERTA,CANADA
来源
PHYSICAL REVIEW D | 1991年 / 43卷 / 12期
关键词
D O I
10.1103/PhysRevD.43.3861
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The first law of thermodynamics is derived for bounded, static, spherically symmetric spacetimes which include a matter distribution and either a black-hole or cosmological horizon. Heat capacities associated with horizon/matter systems are calculated. It is found that if the surface area of the boundary is held fixed, the heat capacity of a system including a black hole can always be made positive by including a matter distribution of sufficient density. The heat capacity associated with a system including a cosmological horizon and a matter distribution may be positive or negative depending on the matter configuration, but must always be negative in the limit that the boundary approaches the horizon. A discussion is given of the case in which the cosmological constant is allowed to vary. It is found that the Hawking-Coleman mechanisms for explaining the low value of the cosmological constant are not well defined.
引用
收藏
页码:3861 / 3872
页数:12
相关论文
共 21 条
[1]   4 LAWS OF BLACK HOLE MECHANICS [J].
BARDEEN, JM ;
CARTER, B ;
HAWKING, SW .
COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1973, 31 (02) :161-170
[2]   DENSITY OF STATES FOR THE GRAVITATIONAL-FIELD IN BLACK-HOLE TOPOLOGIES [J].
BRADEN, HW ;
WHITING, BF ;
YORK, JW .
PHYSICAL REVIEW D, 1987, 36 (12) :3614-3625
[3]  
BRADEN HW, 1990, PHYS REV D, V42, P2376
[4]   THERMODYNAMIC ENSEMBLES AND GRAVITATION [J].
BROWN, JD ;
COMER, GL ;
MARTINEZ, EA ;
MELMED, J ;
WHITING, BF ;
YORK, JW .
CLASSICAL AND QUANTUM GRAVITY, 1990, 7 (08) :1433-1444
[5]   WHY THERE IS NOTHING RATHER THAN SOMETHING - A THEORY OF THE COSMOLOGICAL CONSTANT [J].
COLEMAN, S .
NUCLEAR PHYSICS B, 1988, 310 (3-4) :643-668
[6]   COSMOLOGY WITH DECAYING VACUUM ENERGY [J].
FREESE, K ;
ADAMS, FC ;
FRIEMAN, JA ;
MOTTOLA, E .
NUCLEAR PHYSICS B, 1987, 287 (04) :797-814
[7]   ACTION INTEGRALS AND PARTITION-FUNCTIONS IN QUANTUM GRAVITY [J].
GIBBONS, GW ;
HAWKING, SW .
PHYSICAL REVIEW D, 1977, 15 (10) :2752-2756
[8]   THE COSMOLOGICAL CONSTANT IS PROBABLY ZERO [J].
HAWKING, SW .
PHYSICS LETTERS B, 1984, 134 (06) :403-404
[9]   PARTICLE CREATION BY BLACK-HOLES [J].
HAWKING, SW .
COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1975, 43 (03) :199-220
[10]   EUCLIDEAN ACTION AND THE THERMODYNAMICS OF MANIFOLDS WITHOUT BOUNDARY [J].
HAYWARD, G .
PHYSICAL REVIEW D, 1990, 41 (10) :3248-3251