English

Two Phase Transitions in Chiral Gross-Neveu Model in $2+ \epsilon$ Dimensions at Low N

High Energy Physics - Theory 2009-10-31 v1

Abstract

We show that the chiral Gross-Neveu model in 2+ϵ2+ \epsilon dimensions has for a small number NN of fermions two phase transitions corresponding to pair formation and pair condensation. In the first transition, fermions and antifermions acquire spontaneously a mass and are bound to pairs which behave like a Bose liquid in a chirally symmetric state. In the second transition, the Bose liquid condenses into a coherent state which breaks chiral symmetry. This suggests the possibility that in particle physics, the generation of quark masses may also happen separately from the breakdown of chiral symmetry.

Keywords

Cite

@article{arxiv.hep-th/9809112,
  title  = {Two Phase Transitions in Chiral Gross-Neveu Model in $2+ \epsilon$ Dimensions at Low N},
  author = {H. Kleinert and E. Babaev},
  journal= {arXiv preprint arXiv:hep-th/9809112},
  year   = {2009}
}

Comments

Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html . Latest update of paper also at http://www.physik.fu-berlin.de/~kleinert/kleiner_re269/preprint.html