University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Tuesday, November 26th 2019
11:15 am:
Nuclear Physics Seminar in Tate 301-20
Speaker: Tom Welle, University of Minnesota
Subject: Phenomenological modeling of first-order phase transition in QCD

Quark matter is expected to have a critical point at a
temperature of roughly 170 MeV and baryon chemical potential of
roughly 300 MeV, and to exhibit a first order phase transition into a
quark-gluon plasma. Modelling this transition is difficult due to the
complexities of modelling quark confinement. A method is presented for
parametrizing the equation of state of QCD in multiple phases. This
method involves the use of a switching function, taking values between
0 and 1, which interpolates between the equations of state for two
phases as a function of temperature and chemical potential. This
function characterizes the transition between the hadron resonance gas
and quark-gluon plasma phases of nuclear matter. The results of this
method are compared to those of lattice calculations for the case of 3
colors and 3 flavors.

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