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Main Authors: Shimada, Masanari, Kobayashi, Tetsuya J.
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2506.10253
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author Shimada, Masanari
Kobayashi, Tetsuya J.
author_facet Shimada, Masanari
Kobayashi, Tetsuya J.
contents Although coarse-grained models have been widely used to explain exotic phenomena in complex fluids, such as droplet formation in living cells, these conventional approaches often fail to capture the intricate microscopic degrees of freedom that such fluids inherently possess. In this study, we propose a model that incorporates distinct microscopic degrees of freedom and their interactions, without directly relying on conventional coarse-grained descriptions. By introducing two key assumptions, we show that the system can exhibit equilibrium states characterized by heterogeneous density profiles with finite length scales, resembling those typically associated with non-equilibrium phenomena. These findings highlight the importance of distinguishing between equilibrium states and non-equilibrium steady states in highly complex systems.
format Preprint
id arxiv_https___arxiv_org_abs_2506_10253
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Statistical mechanics of fluids with hidden degrees of freedom
Shimada, Masanari
Kobayashi, Tetsuya J.
Soft Condensed Matter
Although coarse-grained models have been widely used to explain exotic phenomena in complex fluids, such as droplet formation in living cells, these conventional approaches often fail to capture the intricate microscopic degrees of freedom that such fluids inherently possess. In this study, we propose a model that incorporates distinct microscopic degrees of freedom and their interactions, without directly relying on conventional coarse-grained descriptions. By introducing two key assumptions, we show that the system can exhibit equilibrium states characterized by heterogeneous density profiles with finite length scales, resembling those typically associated with non-equilibrium phenomena. These findings highlight the importance of distinguishing between equilibrium states and non-equilibrium steady states in highly complex systems.
title Statistical mechanics of fluids with hidden degrees of freedom
topic Soft Condensed Matter
url https://arxiv.org/abs/2506.10253