量子凝聚的经典空间
Classical space from quantum condensates
摘要：
本文回顾了在量子场论中处理自发对称性破缺的玻色子变换方法，重点讨论了它如何描述在这种量子背景下扩展的和经典的物体的出现。然后，我们将这种方法应用于空间本身的出现，作为量子黑洞蒸发产生的扩展和经典对象。特别是，我们展示了如何经典的扭转和曲率张量可以出现在真空中的非均匀Nambu-Goldstone玻色子凝聚的影响，在E（3）不变旋量模型与对称性破缺。
英文摘要：
We review the boson transformation method to deal with spontaneous symmetry breaking in quantum field theory, focussing on how it describes the emergence of extended and classical objects in such quantum context. We then apply the method to the emergence of space itself, as an extended and classical object resulting from the evaporation of a quantum black hole. In particular, we show how classical torsion and curvature tensors can emerge as effects of an inhomogeneous Nambu-Goldstone boson condensation in vacuum, in E(3) invariant spinor models with symmetry breaking.
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