PIRSA:17120010

Video URL

http://pirsa.org/17120010

The Fermion Bag Approach in the Hamiltonian Picture

Huffman, E. (2017). The Fermion Bag Approach in the Hamiltonian Picture. Perimeter Institute for Theoretical Physics. http://pirsa.org/17120010

Huffman, Emilie. The Fermion Bag Approach in the Hamiltonian Picture. Perimeter Institute for Theoretical Physics, Dec. 12, 2017, http://pirsa.org/17120010 

          @misc{ scivideos_PIRSA:17120010,
            doi = {},
            url = {http://pirsa.org/17120010},
            author = {Huffman, Emilie},
            keywords = {Quantum Matter},
            language = {en},
            title = {The Fermion Bag Approach in the Hamiltonian Picture},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2017},
            month = {dec},
            note = {PIRSA:17120010 see, \url{https://scivideos.org/PIRSA/17120010}}
          }

Emilie Huffman Perimeter Institute for Theoretical Physics

Source Repository PIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Quantum Monte Carlo methods, when applicable, offer reliable ways to extract the nonperturbative physics of strongly-correlated many-body systems. However, there are some bottlenecks to the applicability of these methods including the sign problem and algorithmic update inefficiencies. Using the t-V model Hamiltonian as the example, I demonstrate how the Fermion Bag Approach--originally developed in the context of lattice field theories--has aided in solving the sign problem for this model as well as aided in developing a more efficient algorithm to study the model. Finally, I discuss some other potential uses for the new algorithm, including for a broader class of models known to be sign-problem-free due to fermion bag ideas.