Abstract
We propose a new method to investigate the thermal properties of QCD with a small quark chemical potential Derivatives of quark and gluonic observables with respect to are computed at for two flavors of improved staggered fermions with on a lattice, and used to calculate the leading order Taylor expansion in of the location of the pseudocritical point about This expansion should be well behaved for the small values of relevant for BNL RHIC phenomenology, and predicts a critical curve in reasonable agreement with estimates obtained using exact reweighting. In addition, we contrast the case of isoscalar and isovector chemical potentials, quantify the effect of on the equation of state, and comment on the complex phase of the fermion determinant in QCD with
- Received 9 April 2002
DOI:https://doi.org/10.1103/PhysRevD.66.074507
©2002 American Physical Society