Holographic entanglement chemistry

@article{Cceres2017HolographicEC,
  title={Holographic entanglement chemistry},
  author={Elena C{\'a}ceres and Phuc H. Nguyen and Juan F. Pedraza},
  journal={Physical Review D},
  year={2017},
  volume={95},
  pages={106015}
}
We use the Iyer-Wald formalism to derive an extended first law of entanglement that includes variations in the cosmological constant, Newton's constant and - in the case of higher-derivative theories - all the additional couplings of the theory. In Einstein gravity, where the number of degrees of freedom N2 of the dual field theory is a function of Λ and G, our approach allows us to vary N by keeping the field theory scale fixed or to vary the field theory scale by keeping N fixed. We also… 
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