PIRSA:11100086

MERA for Relativistic QFTs

Haegeman, J. (2011). MERA for Relativistic QFTs. Perimeter Institute. https://pirsa.org/11100086

Haegeman, Jutho. MERA for Relativistic QFTs. Perimeter Institute, Oct. 25, 2011, https://pirsa.org/11100086 

          @misc{ pirsa_PIRSA:11100086,
            doi = {10.48660/11100086},
            url = {https://pirsa.org/11100086},
            author = {Haegeman, Jutho},
            keywords = {},
            language = {en},
            title = {MERA for Relativistic QFTs},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {oct},
            note = {PIRSA:11100086 see, \url{https://pirsa.org}}
          }

Jutho Haegeman Ghent University

DOI 10.48660/11100086
Collection
Talk Type Conference

Abstract

In this second presentation, we will revisit Feynman's first argument and discuss how it still strongly influences variational studies of relativistic field theories with MPS or cMPS. However, as we explain, this argument can be completely overcome by introducing different variational parameters for the different length scales in the system, a strategy that naturally results in the MERA for lattice systems, or its continuous version for field theories. We then illustrate how a cMERA representation for the ground state of free relativistic quantum field theories can be constructed and discuss the main properties of this representation.