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arXiv 0712.4392hep-th
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真空结构与边界重整化群

Vacuum Structure and Boundary Renormalization Group

M. Asorey, J. M. Munoz-Castaneda

摘要:

利用边界条件探讨了真空结构。在二维共形场论中分析了自由能、边界熵和纠缠熵等物理量在边界重整化群流下的行为。结果表明,真空能量和边界熵对边界条件非常敏感,而当纠缠域的边界与物理空间的边界不重合时,真空纠缠熵与边界性质无关.在所有情况下,热力学第二定律沿边界重整化群流成立。

英文摘要:

The vacuum structure is probed by boundary conditions. The behaviour of thermodynamical quantities like free energy, boundary entropy and entanglement entropy under the boundary renormalization group flow are analysed in 2D conformal field theories. The results show that whereas vacuum energy and boundary entropy turn out to be very sensitive to boundary conditions, the vacuum entanglement entropy is independent of boundary properties when the boundary of the entanglement domain does not overlap the boundary of the physical space. In all cases the second law of thermodynamics holds along the boundary renormalization group flow.

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