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Entanglement entropy and Fisher information metric for closed bosonic strings in homogeneous plane wave background

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arxiv 1705.01873 v2 pith:43WS6KLT submitted 2017-05-04 hep-th

H. Dimov , S. Mladenov , R. C. Rashkov , T. Vetsov This is my paper · ORCID
classification hep-th
keywords backgroundbosoniccaseclosedentanglemententropyfisherhomogeneous
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We derive the extended renormalized entanglement entropy (EREE) and the Fisher information metric in the case of closed bosonic strings in homogeneous plane wave background. Our investigations are conducted within the framework of Thermo Field Dynamics (TFD). The formalism is also illustrated on the example of some particular models in condensed matter physics and the non-equilibrium case for system with dissipations.

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    The extended entanglement entropy of the type II superstring is computed in thermo field dynamics; its quantum-fluctuation part is UV finite below the Hagedorn temperature, and the Hagedorn divergence comes entirely f...

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