Subsets of configurations and canonical partition functions

Zusammenfassung

We explain the physical nature of the subset solution to the sign problem in chiral random matrix theory: the subset sum over configurations is shown to project out the canonical determinant with zero quark charge from a given configuration. As the grand canonical chiral random matrix partition function is independent of the chemical potential, the zero-quark-charge sector provides the full result. DOI: 10.1103/PhysRevD.87.034510