The Lattice NJL Model at Non-zero Baryon and Isospin Densities
High Energy Physics - Lattice
2009-11-10 v2 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We present initial results of a numerical investigation of the chiral symmetry restoring transition in the (3+1)-dimensional Nambu -- Jona-Lasinio model with both non-zero baryon chemical potential (mu_B) and isospin chemical potential (mu_I). With non-zero isospin chemical potential, the model suffers from a sign problem. We proceed in two ways: (i) We perform ``partially quenched'' simulations in which mu_I is made non-zero only during the measurement of chiral observables; (ii) We perform full simulations with imaginary isospin chemical potential with the aim to analytically continue results to real mu_I.
Keywords
Cite
@article{arxiv.hep-lat/0407034,
title = {The Lattice NJL Model at Non-zero Baryon and Isospin Densities},
author = {David N. Walters and Simon Hands},
journal= {arXiv preprint arXiv:hep-lat/0407034},
year = {2009}
}
Comments
3 pages, 3 figures, poster presented at LATTICE 2004, Fermi National Accelerator Laboratory, June 21-26, 2004