Abstract
Spontaneous breaking of chiral symmetry is a nonperturbative phenomenon in the QCD vacuum as well as at low temperature and densities. Hadronic theories of the low energy regime have to take this into account [1]. Chiral symmetry breaking appears in the hadron spectrum as a mass splitting of so-called chiral partners. A re-occurring topic in the literature is the possibility that the order parameter for the chiral transition is a function of spatial coordinate [2]. A fruitful Ansatz to describe inhomogeneous condensation is the chiral-density wave (CDW). We re-investigate the question of inhomogeneous condensation at nonzero density in the extended Linear Sigma Model (eLSM) where the baryons are introduced as parity doublets [3, 4]. The eLSM successfully describes hadron vacuum phenomenology both in the meson and baryon sector, it is therefore a natural choice for non-zero density studies including the CDW [5].
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