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Can Entanglement Entropy Be a Finite Quantity?

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I will introduce the basic idea of entanglement entropy and how it can be computed on field theoretical systems such as the phi^4 theory and QCD . I will further show that by putting counterterms allowed by symmetries of the theory in the interface between two entangled regions, the entanglement entropy becomes finite. This aspect of renormalizability was not realized in the past.

This talk is part of the Lattice field theory informal seminars series.

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