出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We investigate the Gross-Neveu model on the lattice at finite temperature and chemical potential
in the limit of an infinite number of fermion flavours. We check the universality of the continuum
limit of staggered and overlap fermions at finite temperature and chemical potential. We show
that at finite density a recently discovered phase of cold baryonic matter emerges as a baryon
crystal from a spatially inhomogeneous fermion condensate. However, we also demonstrate that
on the lattice, this new phase disappears at large coupling or in small volumes. Furthermore, we
investigate unusual finite size effects that appear at finite chemical potential. Finally, we speculate
on the implications of our findings for QCD.
