Black hole microstates and attractor without supersymmetry

被引:66
作者
Dabholkar, Atish [1 ]
Trivedi, Sandip P.
Sen, Ashoke
机构
[1] Tata Inst Fundamental Res, Homi Bhabha Rd, Bombay 400005, Maharashtra, India
[2] Harish Chandra Res Inst, Allahabad 211019, Uttar Pradesh, India
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 01期
关键词
black holes in string theory; superstrings and heterotic strings;
D O I
10.1088/1126-6708/2007/01/096
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
Due to the attractor mechanism, the entropy of an extremal black hole does not vary continuously as we vary the asymptotic values of various moduli fields. Using this fact we argue that the entropy of an extremal black hole in string theory, calculated for a range of values of the asymptotic moduli for which the microscopic theory is strongly coupled, should match the statistical entropy of the same system calculated for a range of values of the asymptotic moduli for which the microscopic theory is weakly coupled. This argument does not rely on supersymmetry and applies equally well to nonsupersymmetric extremal black holes. We discuss several examples which support this argument and also several caveats which could invalidate this argument.
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页数:43
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