The mass gap and vacuum energy of the Gross-Neveu model via the 2PPI expansion

Preprint

10 October 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-th/0210098

Abstract

We introduce the 2PPI (2-point-particle-irreducible) expansion, which sums bubble graphs to all orders. We prove the renormalizibility of this summation. We use it on the Gross-Neveu model to calculate the mass gap and vacuum energy. After an optimization of the expansion, the final results are qualitatively good.

Keywords

GAP AND VACUUM
VACUUM ENERGY
NEVEU MODEL
GROSS NEVEU
SUMMATION
MASS GAP
BUBBLE
GRAPHS
2PPI

All Related Versions

Version 1, 2002-10-10, ArXiv
Published version: Physical Review D, 67 (2), 025011.

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