PIRSA:14040144

Probing renormalization group flows using entanglement entropy

Mezei, M. (2014). Probing renormalization group flows using entanglement entropy. Perimeter Institute. https://pirsa.org/14040144

Mezei, Mark. Probing renormalization group flows using entanglement entropy. Perimeter Institute, Apr. 30, 2014, https://pirsa.org/14040144 

          @misc{ pirsa_PIRSA:14040144,
            doi = {10.48660/14040144},
            url = {https://pirsa.org/14040144},
            author = {Mezei, Mark},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Probing renormalization group flows using entanglement entropy},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {apr},
            note = {PIRSA:14040144 see, \url{https://pirsa.org}}
          }

Mark Mezei

Massachusetts Institute of Technology (MIT)

Talk number
PIRSA:14040144
Collection
Talk Type
Subject
Abstract
The entanglement entropy of the vacuum of a quantum field theory contains information about physics at all scales and is UV sensitive. A simple refinement of entanglement entropy gets rid of its UV divergence, and allows us to extract entanglement per scale. In two and three spacetime dimensions this quantity can be used as a proxy for the number of degrees of freedom, as it decreases under RG flow. We investigate its behavior around fixed points, and reveal its interesting analytic structure in the space of couplings.