Swap Monte Carlo for diatomic molecules

Fuente: arXiv
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Main Authors: Böhmer, Till, Dyre, Jeppe C., Costigliola, Lorenzo
Format: Preprint
Published: 2025
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author Böhmer, Till
Dyre, Jeppe C.
Costigliola, Lorenzo
author_facet Böhmer, Till
Dyre, Jeppe C.
Costigliola, Lorenzo
contents In recent years the Swap Monte Carlo algorithm has led to remarkable progress in equilibrating supercooled model liquids at low temperatures. Applications have so far been limited to systems composed of spherical particles, however, whereas most real-world supercooled liquids are molecular. We here introduce a simple size-polydisperse molecular model that allows for efficient thermal equilibration in silico with the Swap Monte Carlo method, resulting in an estimated speedup of 1,000-1,000,000 at moderate polydispersity (5-10%). The model exhibits little difference between size-resolved orientational time-autocorrelation functions.
format Preprint
id arxiv_https___arxiv_org_abs_2504_15238
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Swap Monte Carlo for diatomic molecules
Böhmer, Till
Dyre, Jeppe C.
Costigliola, Lorenzo
Soft Condensed Matter
In recent years the Swap Monte Carlo algorithm has led to remarkable progress in equilibrating supercooled model liquids at low temperatures. Applications have so far been limited to systems composed of spherical particles, however, whereas most real-world supercooled liquids are molecular. We here introduce a simple size-polydisperse molecular model that allows for efficient thermal equilibration in silico with the Swap Monte Carlo method, resulting in an estimated speedup of 1,000-1,000,000 at moderate polydispersity (5-10%). The model exhibits little difference between size-resolved orientational time-autocorrelation functions.
title Swap Monte Carlo for diatomic molecules
topic Soft Condensed Matter
url https://arxiv.org/abs/2504.15238