Adding noise and scaling forces to speed up the Langevin clock
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866918368876953600 |
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| author | Basak, Prithviraj Whitelam, Stephen Bechhoefer, John |
| author_facet | Basak, Prithviraj Whitelam, Stephen Bechhoefer, John |
| contents | Using experiments on a colloidal particle trapped in an optical tweezer, we confirm a recent proposal to increase the effective mobility or clock rate of systems described by Langevin dynamics, by simultaneously scaling deterministic forces and adding external noise. A corollary, which we also confirm experimentally, is that a system driven out of equilibrium by a time-dependent protocol can remain closer to thermal equilibrium. As an application, we demonstrate more precise recovery of free-energy differences from nonequilibrium work relations. Langevin clock rescaling provides a general strategy for accelerating calculations in the emerging field of thermodynamic computing, which uses stochastic devices governed by Langevin dynamics to do low-energy calculations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_03620 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Adding noise and scaling forces to speed up the Langevin clock Basak, Prithviraj Whitelam, Stephen Bechhoefer, John Statistical Mechanics Soft Condensed Matter Using experiments on a colloidal particle trapped in an optical tweezer, we confirm a recent proposal to increase the effective mobility or clock rate of systems described by Langevin dynamics, by simultaneously scaling deterministic forces and adding external noise. A corollary, which we also confirm experimentally, is that a system driven out of equilibrium by a time-dependent protocol can remain closer to thermal equilibrium. As an application, we demonstrate more precise recovery of free-energy differences from nonequilibrium work relations. Langevin clock rescaling provides a general strategy for accelerating calculations in the emerging field of thermodynamic computing, which uses stochastic devices governed by Langevin dynamics to do low-energy calculations. |
| title | Adding noise and scaling forces to speed up the Langevin clock |
| topic | Statistical Mechanics Soft Condensed Matter |
| url | https://arxiv.org/abs/2603.03620 |