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- W2110380856 abstract "We study the N_f-flavor Gross-Neveu model in 2+1 dimensions with a baryon chemical potential mu, using both analytical and numerical methods. In particular, we study the self-consistent Boltzmann equation in the Fermi liquid framework using the quasiparticle interaction calculated to O(1/N_f), and find solutions for zero sound propagation for almost all mu > mu_c, the critical chemical potential for chiral symmetry restoration. Next we present results of a numerical lattice simulation, examining temporal correlation functions of mesons defined using a point-split interpolating operator, and finding evidence for phonon-like behaviour characterised by a linear dispersion relation in the long wavelength limit. We argue that our results provide the first evidence for a collective excitation in a lattice simulation." @default.
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- W2110380856 date "2004-09-20" @default.
- W2110380856 modified "2023-09-25" @default.
- W2110380856 title "Zero lattice sound" @default.
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- W2110380856 doi "https://doi.org/10.1103/physrevd.70.056006" @default.
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