Discontinuous Transition in a Boundary Driven Contact Process

非平衡伊辛模型与两个热库接触的通用特性

Universal features of nonequilibrium Ising models in contact with two thermal reservoirs

研究非平衡伊辛模型与两个热库接触时的相变特性，揭示外部参数对相变类型的影响，发现对称参数下存在连续、不连续和三临界点，而反对称参数下仅出现临界或不连续相变。

Absence of the discontinuous transition in the one-dimensional triplet creation model

Although Hinrichsen in his unpublished work theoretically rebutted the possibility of the discontinuous transition in one-dimensional nonequilibrium systems unless there are additional conservation laws, long-range interactions, macroscopic currents, or special boundary conditions, we have recently observed the resurrection of the claim that the triplet creation model (TC) introduced by Dickman and Tomé [Phys. Rev. E {\bf 44}, 4833 (1991)] would show the discontinuous transition. By extensive simulations, however, we find that the one-dimensional TC does belong to the directed percolation univ…

Influence of competition in minimal systems with discontinuous absorbing phase transitions

Contact processes (CP's) with particle creation requiring a minimal neighborhood (restrictive or threshold CP's) present a novel sort of discontinuous absorbing transitions, that revealed itself robust under the inclusion of different ingredients, such as distinct lattice topologies, particle annihilations and diffusion. Here, we tackle on the influence of competition between restrictive and standard dynamics (that describes the usual CP and a continuous DP transition is presented). Systems have been studied via mean-field theory (MFT) and numerical simulations. Results show partial contrast b…

Effect of diffusion in one-dimensional discontinuous absorbing phase transitions

It is known that diffusion provokes substantial changes in continuous absorbing phase transitions. Conversely, its effect on discontinuous transitions is much less understood. In order to shed light in this direction, we study the inclusion of diffusion in the simplest one-dimensional model with a discontinuous absorbing phase transition, namely the long-range contact process ($σ$-CP). Particles interact as in the usual CP, but the transition rate depends on the length $\ell$ of inactive sites according to $1 + a \ell^{-σ}$, where $a$ and $σ$ are control parameters. In the absence of diffusion…

A generalized slip-flow theory for a slightly rarefied gas flow induced by discontinuous wall temperature

A system of fluid-dynamic-type equations and their boundary conditions derived from a system of the Boltzmann equation is of great importance in kinetic theory when we are concerned with the motion of a slightly rarefied gas. It offers an efficient alternative to solving the Boltzmann equation directly and, more importantly, provides a clear picture of the flow structure in the near-continuum regime. However, the applicability of the existing slip-flow theory is limited to the case where both the boundary shape and the kinetic boundary condition are smooth functions of the boundary coordinates…