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arXiv 0912.0939hep-thcond-mat.mes-hallcond-mat.str-elgr-qc
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双子黑洞中的复合费米子金属与S对偶

Composite Fermion Metals from Dyon Black Holes and S-Duality

Donsgu Bak, Soo-Jong Rey

摘要:

我们提出四维反德西特时空中双子黑洞背景下的弦论是共形不变复合狄拉克费米子金属的全息对偶。利用S对偶映射,我们证明了该黑洞的热力学和输运性质与复合费米子金属的热力学和输运性质相匹配,表现出类费米子液体性质。在Dirac-Schwinger-Zwanziger量子化条件的基础上,我们证明了在SL(2,Z)的Gamma(2)子群轨道上给电黑洞接通磁荷等价于给组成费米子附加偶数个统计通量量子.在金属点处,统计磁通量与背景磁场联锁。通过对黑洞的内能的研究,我们为所提出的全息对偶找到了支持的证据,并对黑洞背景下的体费米子运动进行了探索。它们与复合费米子金属的基态能量在M-F近似下以及费米点附近组分或复合费米子激发的回旋运动有很好的一致性。

英文摘要:

We propose that string theory in the background of dyon black holes in four-dimensional anti-de Sitter spacetime is holographic dual to conformally invariant composite Dirac fermion metal. By utilizing S-duality map, we show that thermodynamic and transport properties of the black hole match with those of composite fermion metal, exhibiting Fermi liquid-like. Built upon Dirac-Schwinger-Zwanziger quantization condition, we argue that turning on magnetic charges to electric black hole along the orbit of Gamma(2) subgroup of SL(2,Z) is equivalent to attaching even unit of statistical flux quanta to constituent fermions. Being at metallic point, the statistical magnetic flux is interlocked to the background magnetic field. We find supporting evidences for proposed holographic duality from study of internal energy of black hole and probe bulk fermion motion in black hole background. They show good agreement with ground-state energy of composite fermion metal in Thomas-Fermi approximation and cyclotron motion of a constituent or composite fermion excitation near Fermi-point.

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