期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP09(2014)119
关键词
Nonperturbative Effects; Statistical Methods
资金
- NSF [PHY-1214644]
- Berkeley Center for Theoretical Physics
- Aspen Center for Physics under NSF [1066293]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1214644] Funding Source: National Science Foundation
We consider the universal part of entanglement entropy across a plane in flat space for a QFT, giving a non-perturbative expression in terms of a spectral function. We study the change in entanglement entropy under a deformation by a relevant operator, providing a pertrubative expansion where the terms are correlation functions in the undeformed theory. The entanglement entropy for free massive fermions and scalars easily follows. Finally, we study entanglement entropy across a plane in a background geometry that is a deformation of flat space, finding new universal terms arising from mixing of geometry and couplings of the QFT
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