FINITE DENSITY SIMULATIONS USING
A DETERMINANT ESTIMATOR

Previous investigations have shown that the canonical approach to
simulating QCD at finite density is very promising. The algorithm we
used in our earlier work employs an exact calculation of the fermionic
determinant – this limits the size of the lattices we can simulate. Very
interesting questions can only be answered if we simulate at larger
volume. In this talk we explore an algorithm, Hybrid Noisy Monte Carlo,
that employs a determinant estimator rather than an exact calculation:
we first present the technical aspects of the estimator, we check that
the algorithm is correct by comparing it with our previous study and
then we discuss its merits. We will also discuss the challenges faced
when simulating larger lattice volumes.