Can Bekenstein's area law prevail in modified theories of gravity?

被引:2
|
作者
Kubizn, David [1 ]
Li, Marek [1 ]
机构
[1] Charles Univ Prague, Inst Theoret Phys, Fac Math & Phys, V Holesovickach 2, Prague 8, Czech Republic
关键词
BLACK-HOLE; TENSOR;
D O I
10.1103/PhysRevD.108.L121501
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
According to Bekenstein's area law, the black hole entropy is identified holographically with one quarter of the horizon area. However, it is commonly believed that such a law is only valid in Einstein's theory and that higher curvature corrections generically give rise to its modifications. This is, for example, the case of black holes in Lovelock gravities, or their four-dimensional cousins in the recently discovered 4D scalartensor Gauss-Bonnet gravity where one naively "finds" (classical) logarithmic corrections to the Bekenstein's law. In this paper we argue that such logarithmic corrections originate from ignoring the shift symmetry of the 4D Gauss-Bonnet gravity. When this symmetry is properly taken into account, there is no longer any departure from the area law in this theory. Moreover, the first law remains valid upon modifying the black hole temperature, which can be derived via the Euclidean grand canonical ensemble (Brown-York) procedure, but is no longer given by the surface gravity. Interestingly, we show that upon similar modification of the black hole temperature the area law can also prevail for black holes in higherdimensional Lovelock gravities.
引用
收藏
页数:7
相关论文
共 50 条
  • [1] Cosmological behavior of Bekenstein's modified theory of gravity
    Bourliot, F.
    Ferreira, P. G.
    Mota, D. F.
    Skordis, C.
    PHYSICAL REVIEW D, 2007, 75 (06):
  • [2] Vector-tensor nature of Bekenstein's relativistic theory of modified gravity
    Zlosnik, T. G.
    Ferreira, P. G.
    Starkman, Glenn D.
    PHYSICAL REVIEW D, 2006, 74 (04):
  • [3] Cosmological evolution from modified Bekenstein entropy law
    de Cesare, Marco
    Gubitosi, Giulia
    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2024, (01):
  • [4] Modified Bekenstein-Hawking System in f(R) Gravity
    Jibitesh Dutta
    Saugata Mitra
    Binod Chetry
    International Journal of Theoretical Physics, 2016, 55 : 4272 - 4285
  • [5] Modified Bekenstein-Hawking System in f(R) Gravity
    Dutta, Jibitesh
    Mitra, Saugata
    Chetry, Binod
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2016, 55 (10) : 4272 - 4285
  • [6] Can f(R) modified gravity theories mimic a ΛCDM cosmology?
    Fay, S.
    Nesseris, S.
    Perivolaropoulos, L.
    PHYSICAL REVIEW D, 2007, 76 (06)
  • [7] Modified teleparallel theories of gravity
    Bahamonde, Sebastian
    Boehmer, Christian G.
    Wright, Matthew
    PHYSICAL REVIEW D, 2015, 92 (10):
  • [8] Modified gravity: the game of theories?
    Odintsov, S. D.
    RUSSIAN PHYSICS JOURNAL, 2025, : 108 - 112
  • [9] THERMODYNAMICS IN MODIFIED GRAVITY THEORIES
    Bamba, Kazuharu
    Geng, Chao-Qiang
    Tsujikawa, Shinji
    INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2011, 20 (08): : 1363 - 1371
  • [10] Bekenstein-Hawking area law for black objects with conical singularities
    Herdeiro, Carlos
    Kleihaus, Burkhard
    Kunz, Jutta
    Radu, Eugen
    PHYSICAL REVIEW D, 2010, 81 (06)