Microscopic calculation of symmetry projected nuclear level densities

Abstract

We present a quantum Monte Carlo method with exact projection on parity and angular momentum that is free of sign-problems for seniority-conserving nuclear interactions. This technique allows a microscopic calculation of angular momentum and parity projected nuclear level densities. We present results for the ${}^{55}$Fe, ${}^{56}$Fe and ${}^{57}$Fe isotopes. Signatures of the pairing phase transition are observed in the angular momentum distribution of the nuclear level density.

4 pages, 4 figures