Condensates, crystals, and renormalons in the Gross-Neveu model at finite density

Francesco Benini, Ohad Mamroud, Tomas Reis +1

We study the $O(2N)$ symmetric Gross-Neveu model at finite density in the presence of a $U(1)$ chemical potential $h$ for a generic number $a\le N-2$ of fermion fields. By combin…