A Gaussian Variational Approach to cMERA for Interacting Fields
High Energy Physics - Theory
2018-06-07 v3 Quantum Physics
Abstract
We use the Gaussian variational principle to apply cMERA to interacting quantum field theories in arbitrary spacetime dimensions. By establishing a correspondence between the first two terms in the variational expansion and the Gaussian Effective Potential, we can exactly solve for a variational approximation to the cMERA entangler. As examples, we treat scalar theory and the Gross-Neveu model and extract non-perturbative behavior. We also comment on the connection between generalized squeezed coherent states and more generic entanglers.
Cite
@article{arxiv.1612.02427,
title = {A Gaussian Variational Approach to cMERA for Interacting Fields},
author = {Jordan S. Cotler and Javier Molina-Vilaplana and Mark T. Mueller},
journal= {arXiv preprint arXiv:1612.02427},
year = {2018}
}
Comments
v3: 13 pages, errors and typos fixed, references added