Thies M (2022)
Publication Type: Journal article
Publication year: 2022
Book Volume: 105
Journal Issue: 11
DOI: 10.1103/PhysRevD.105.116003
In the massive chiral Gross-Neveu model, a phase boundary separates a homogeneous from an inhomogeneous phase. It consists of two parts, a second order line and a first order line, joined at a tricritical point. Whereas the first order phase boundary requires a full, numerical Hartree-Fock calculation, the second order phase boundary can be determined exactly and with less effort by a perturbative stability analysis. We extend this stability analysis to higher order perturbation theory. This enables us to locate the tricritical point exactly, without need to perform a Hartree-Fock calculation. Divergencies due to the emergence of spectral gaps in a spatially periodic perturbation are handled using well established tools from many body theory.
APA:
Thies, M. (2022). Exact tricritical point from next-to-leading-order stability analysis. Physical Review D, 105(11). https://dx.doi.org/10.1103/PhysRevD.105.116003
MLA:
Thies, Michael. "Exact tricritical point from next-to-leading-order stability analysis." Physical Review D 105.11 (2022).
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