Phase transition revealed by eigen microstate entropy

Fuente: arXiv
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Main Authors: Liu, Teng, Niu, Xuezhi, Zhang, Mingli, Hu, Gaoke, Chen, Yuhan, Zhang, Yongwen, Shi, Rui, Li, Jingyuan, Tan, Peng, Liu, Maoxin, Li, Hui, Chen, Xiaosong
Format: Preprint
Published: 2025
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author Liu, Teng
Niu, Xuezhi
Zhang, Mingli
Hu, Gaoke
Chen, Yuhan
Zhang, Yongwen
Shi, Rui
Li, Jingyuan
Tan, Peng
Liu, Maoxin
Li, Hui
Chen, Xiaosong
author_facet Liu, Teng
Niu, Xuezhi
Zhang, Mingli
Hu, Gaoke
Chen, Yuhan
Zhang, Yongwen
Shi, Rui
Li, Jingyuan
Tan, Peng
Liu, Maoxin
Li, Hui
Chen, Xiaosong
contents We introduce the eigen microstate entropy ($S_{\text{EM}}$), a novel metric of complexity derived from the probabilities of statistically independent eigen microstates. After establishing its scaling behavior in equilibrium systems and demonstrating its utility in critical phenomena (mean spherical, Ising, and Potts models), we apply $S_{\text{EM}}$ to non-equilibrium complex systems. Our analysis reveals a consistent precursor signal: a significant increase in $S_{\text{EM}}$ precedes major phase transitions. Specifically, we observe this entropy rise before biomolecular condensate formation in liquid-liquid phase separation in living cells and months ahead of El Niño events. These findings position $S_{\text{EM}}$ as a general framework for detecting and interpreting phase transitions in non-equilibrium systems.
format Preprint
id arxiv_https___arxiv_org_abs_2512_23086
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Phase transition revealed by eigen microstate entropy
Liu, Teng
Niu, Xuezhi
Zhang, Mingli
Hu, Gaoke
Chen, Yuhan
Zhang, Yongwen
Shi, Rui
Li, Jingyuan
Tan, Peng
Liu, Maoxin
Li, Hui
Chen, Xiaosong
Statistical Mechanics
Adaptation and Self-Organizing Systems
We introduce the eigen microstate entropy ($S_{\text{EM}}$), a novel metric of complexity derived from the probabilities of statistically independent eigen microstates. After establishing its scaling behavior in equilibrium systems and demonstrating its utility in critical phenomena (mean spherical, Ising, and Potts models), we apply $S_{\text{EM}}$ to non-equilibrium complex systems. Our analysis reveals a consistent precursor signal: a significant increase in $S_{\text{EM}}$ precedes major phase transitions. Specifically, we observe this entropy rise before biomolecular condensate formation in liquid-liquid phase separation in living cells and months ahead of El Niño events. These findings position $S_{\text{EM}}$ as a general framework for detecting and interpreting phase transitions in non-equilibrium systems.
title Phase transition revealed by eigen microstate entropy
topic Statistical Mechanics
Adaptation and Self-Organizing Systems
url https://arxiv.org/abs/2512.23086