Density Matrix Renormalisation Group Approach to the Massive Schwinger Model
High Energy Physics - Lattice
2009-11-07 v1
Abstract
The massive Schwinger model is studied, using a density matrix renormalisation group approach to the staggered lattice Hamiltonian version of the model. Lattice sizes up to 256 sites are calculated, and the estimates in the continuum limit are almost two orders of magnitude more accurate than previous calculations. Coleman's picture of `half-asymptotic' particles at background field theta = pi is confirmed. The predicted phase transition at finite fermion mass (m/g) is accurately located, and demonstrated to belong in the 2D Ising universality class.
Cite
@article{arxiv.hep-lat/0202014,
title = {Density Matrix Renormalisation Group Approach to the Massive Schwinger Model},
author = {T. Byrnes and P. Sriganesh and R. J. Bursill and C. J. Hamer},
journal= {arXiv preprint arXiv:hep-lat/0202014},
year = {2009}
}
Comments
38 pages, 18 figures, submitted to PRD