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arXiv 1012.2913hep-thhep-lat
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有限温度下4和8超荷超对称矩阵量子力学的非微扰研究

Nonperturbative studies of supersymmetric matrix quantum mechanics with 4 and 8 supercharges at finite temperature

Masanori Hanada, So Matsuura, Jun Nishimura, Daniel Robles-Llana

摘要:

利用Monte Carlo方法研究了平面大N极限下具有4个和8个超荷的一维U(N)超对称规范理论的热力学性质。与16增压的情况不同,人们普遍认为这些模型中不存在具有零能量的阈值束缚态。这导致A.V. Smilga推测内能在低温下呈指数下降,而不是以幂律下降。在16增压的情况下,后者的行为预测从双黑0膜几何和最近证实的Monte Carlo计算。我们的结果与4和8增压模型确实支持指数行为,揭示了从16增压的情况下的定性差异。

英文摘要:

We investigate thermodynamic properties of one-dimensional U(N) supersymmetric gauge theories with 4 and 8 supercharges in the planar large-N limit by Monte Carlo calculations. Unlike the 16 supercharge case, the threshold bound state with zero energy is widely believed not to exist in these models. This led A.V. Smilga to conjecture that the internal energy decreases exponentially at low temperature instead of decreasing with a power law. In the 16 supercharge case, the latter behavior was predicted from the dual black 0-brane geometry and confirmed recently by Monte Carlo calculations. Our results for the models with 4 and 8 supercharges indeed support the exponential behavior, revealing a qualitative difference from the 16 supercharge case.

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