Speaker
Description
Entanglement is a defining property of quantum physics and provides a natural way to characterize correlations. Despite some inherent difficulties, there has been considerable advancement in lattice evaluations of entanglement measures, such as entanglement entropy (EE).
In this talk, I will present our argument that, at large subregions, the derivative of EE with respect to the size of the entangling region equals the thermal entropy density. We provide validation for these claims from our lattice computations in the three-dimensional O(4) model at finite chemical potential by showing that in the corresponding limit, the EE derivative satisfies the same Maxwell relation as the thermal entropy density. These results pave the way for extracting thermodynamics from entanglement data in general QFTs.