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19982026
most citedOrder parameter of MgB_2: a fully gapped superconductor

158 citations

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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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7 papers · 1 filter

cond-mat.stat-mech2024

Coexistence of distinct nonuniform nonequilibrium steady states in Ehrenfest multiurn model on a ring

Chi-Ho Cheng, Pik-Yin Lai

The recently proposed Ehrenfest M-urn model with interactions on a ring is considered as a paradigm model which can exhibit a variety of distinct nonequilibrium steady states. Unli…

cond-mat.stat-mech2024★ 1 cited

Non-equilibrium Dynamics and Phase Transitions in Potts model and Interacting Ehrenfest urn model

Chi-Ho Cheng, Pik-Yin Lai

We show that the recently proposed interacting Ehrenfest M-urn model at equilibrium can be exactly mapped to a mean-field M-state Potts model. By exploiting this correspondence, we…

cond-mat.stat-mech2023★ 4 cited

Theory of Non-equilibrium Asymptotic State Thermodynamics: Interacting Ehrenfest Urn Ring as an Example

Chi-Ho Cheng, Pik-Yin Lai

A generalized class of non-equilibrium state, called non-equilibrium asymptotic state (NEAS), is proposed. The NEAS is constructed within the framework of the Fokker-Planck equatio…

cond-mat.stat-mech2021★ 5 cited

Non-equilibrium thermodynamics and Phase transition of Ehrenfest urns with interactions

Chi-Ho Cheng, Pik-Yin Lai

Ehrenfest urns with interaction that are connected in a ring is considered as a paradigm model for non-equilibrium thermodynamics and is shown to exhibit two distinct non-equilibri…

cond-mat.stat-mech2021★ 7 cited

Phase Transitions in Ehrenfest Urns Model with Interactions: Coexistence of uniform and non-uniform states

Chi-Ho Cheng, Beverly Gemao, Pik-Yin Lai

A model based on the classic non-interacting Ehrenfest urn model with two-urns is generalized to urns with the introduction of interactions for particles within the same urn. A…

cond-mat.stat-mech2017★ 10 cited

Ehrenfest urn model with interaction

Chun-Hsiung Tseng, Yee-Mou Kao, Chi-Ho Cheng

We studied the Ehrenfest urn model in which particles in the same urn interact with each other. Depending on the nature of interaction, the system undergoes a first-order or second…

cond-mat.stat-mech2004★ 27 cited

Quantum phase transition in an atomic Bose gas near a Feshbach resonance

Yu-Wen Lee, Yu-Li Lee

We study the quantum phase transition in an atomic Bose gas near a Feshbach resonance in terms of the renormalization group. This quantum phase transition is characterized by an Is…