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#
Nuclear Physics
Colloquium

Venue: Physics Building, Max-von-Laue-Str. 1, PHYS 02.116

Time: Thursday, November 21, 4:30pm (s.t.)

Contact: hees@itp.uni-frankfurt.de

# Phase structure of the NJL$_2$ model with
isospin - all inclusive

## Michael Thies (Erlangen-Nuremberg University)

Using a finite-mode approach, the Frankfurt group has found that the phase
diagram of the massless two-flavour NJL$_2$ model in the $(\mu,T)$-plane is
identical to that of the Gross-Neveu model (A. Heinz et al., 2016). This
surprising observation has incited us to explore the phase diagram of the
two-flavour NJL$_2$ model systematically. In the chiral limit, we include
all three possible chemical potentials (fermion density, isospin density and
chiral isospin density) and come up with the full analytical solution. The
corresponding massive model can only be solved numerically. First results of
such a numerical solution will also be presented, with special emphasis on
the anatomy of inhomogeneous phases.

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