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arXiv 0811.3494hep-th
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非BPS平坦方向的量子提升

Quantum Lift of Non-BPS Flat Directions

S. Bellucci, S. Ferrara, A. Marrani, A. Shcherbakov

摘要:

本文研究了N=2,d=4的量子修正双模前势$\mathcal{F}=st^2+iλ$的吸引子方程,其中$λ$是唯一能保持轴子位移对称性并改变几何形状的实数修正.在经典情况下,已知黑洞的有效势具有平坦的方向。我们发现,在D 0-D 6膜存在的情况下,黑洞势在量子情况下也表现出平坦的方向。它对应于吸引子方程的非BPS $Z\neq 0$解。与经典情况不同,该解获得了非零的轴子场值。对于D 0-D4和D2-D 6膜的情况,经典平坦方向简化为分离的临界点,这些临界点有一个消失的轴子场。

英文摘要:

We study N=2, d=4 attractor equations for the quantum corrected two-moduli prepotential $\mathcal{F}=st^2+iλ$, with $λ$ real, which is the only correction which preserves the axion shift symmetry and modifies the geometry. In the classical case the black hole effective potential is known to have a flat direction. We found that in the presence of D0-D6 branes the black hole potential exhibits a flat direction in the quantum case as well. It corresponds to non-BPS $Z\neq 0$ solutions to the attractor equations. Unlike the classical case, the solutions acquire non-zero values of the axion field. For the cases of D0-D4 and D2-D6 branes the classical flat direction reduces to separate critical points which turn out to have a vanishing axion field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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