The continuous multi-scale entanglement renormalization ansatz (cMERA)

          @misc{ scivideos_PIRSA:17040038,
            doi = {10.48660/17040038},
            url = {https://pirsa.org/17040038},
            author = {Vidal, Guifre},
            keywords = {Quantum Matter, Quantum Fields and Strings, Quantum Gravity, Quantum Information},
            language = {en},
            title = {The continuous multi-scale entanglement renormalization ansatz (cMERA)},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2017},
            month = {apr},
            note = {PIRSA:17040038 see, \url{https://scivideos.org/index.php/pirsa/17040038}}
          }
          

Abstract

The first half of the talk will introduce the cMERA, as proposed by Haegeman, Osborne, Verschelde and Verstratete in 2011 [1], as an extension to quantum field theories (QFTs) in the continuum of the MERA tensor network for lattice systems. The second half of the talk will review recent results [2] that show how a cMERA optimized to approximate the ground state of a conformal field theory (CFT) retains all of its spacetime symmetries, although these symmetries are realized quasi-locally. In particular, the conformal data of the original CFT can be extracted from the optimized cMERA. [1] J. Haegeman, T. J. Osborne, H. Verschelde, F. Verstraete, Entanglement renormalization for quantum fields, Phys. Rev. Lett, 110, 100402 (2013), arXiv:1102.5524 [2] Q. Hu, G. Vidal, Spacetime symmetries and conformal data in the continuous multi-scale entanglement renormalization ansatz, arXiv:1703.04798