论文标题
烤面包孔和卡西米尔熵
Bra-ket wormholes and Casimir entropy
论文作者
论文摘要
烤孔虫是欧几里得重力中的非平凡马鞍。它们必须受到喉咙内物质场的负Casimir能量的维持。但是，Casimir能量对边界条件非常敏感，并且在存在量规对称性的情况下，必须在物质场的所有可能边界条件上整合，因为它们是Bra-Ket虫洞模量的一部分。对于非Abelian仪表组，我们称为Casimir熵的边界条件的相应度量是非平凡的，并且与Casimir能量竞争。我们发现，对于大型组组，这显着影响了Bra-Ket虫洞的作用并修改相图。尽管如此，我们在陈，戈尔本科和马尔达科纳提出的设置中并没有发现任何违反了强大的亚加性的行为。
Bra-ket wormholes are non-trivial saddles in Euclidean gravity. They have to be sustained by negative Casimir energy of matter fields inside the throat. However, Casimir energy is very sensitive to boundary conditions and in presence of gauge symmetries one has to integrate over all possible boundary conditions for the matter fields, as they are a part of bra-ket wormhole moduli. For non- Abelian gauge groups the corresponding measure for the boundary conditions, which we call Casimir entropy, is non-trivial and it competes with the Casimir energy. We find that for large gauge groups this significantly affects the bra-ket wormhole action and modifies the phase diagram. Despite that, we do not find any violations of strong subadditivity in the setup proposed by Chen, Gorbenko and Maldacena.
