https://doi.org/10.1140/epjb/s10051-020-00025-3
Regular Article - Statistical and Nonlinear Physics
Zeroth order phase transition induced by ergodicity breaking in a mean-field system
School of Physics, Southeast University, 211189, Nanjing, Jiangsu, China
Received:
31
July
2020
Accepted:
18
November
2020
Published online:
11
January
2021
A spin chain model with mean-field interactions is studied within the microcanonical ensemble. Under local microcanonical dynamics, gaps in the space of extensive variables can be open up leading to the ergodicity breaking of this system. As a consequence, our mean-field system can exhibit the zero-order phase transition accompanied with an entropy jump at the transition point. Moreover, the global phase diagram of the system is constructed.
© EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
