出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The canonical partition function approach was designed to avoid the overlap problem that affects
the lattice simulations of nuclear matter at high density. The method employs the projections
of the quark determinant on a fix quark number sector. When the quark number is large, the
evaluation of the projected determinant becomes numerically unstable. In this paper a different
evaluation method based on expanding the determinant in terms of loops winding around the
lattice is studied. We show that this method is stable and significantly faster than our original
algorithm. This greatly expands the range of quark numbers that we can simulate effectively.
