Tricritical behavior in dynamical phase transitions

• DOI: 10.48550/arxiv.2212.03324
• Publication Date: 2022-01-01
• Authors: Tal Agranov; M. E. Cates; Robert L. Jack
• Keywords: Tricritical point; Lattice (music)

We identify a new scenario for dynamical phase transitions associated with time-integrated observables occurring in diffusive systems described by the macroscopic fluctuation theory. It is characterized pairwise meeting of first- and second-order bias-induced transition curves at two tricritical points. formulate simple, general criterion its appearance derive an exact Landau theory behavior. The demonstrated three examples: simple symmetric exclusion process biased activity-related structural observable; Katz-Lebowitz-Spohn lattice gas model current; active entropy production.