ITP OpenIR  > SCI期刊论文
Li, Geng1; Tu, Z. C.
Equilibrium free-energy differences from a linear nonequilibrium equality
Source PublicationPHYSICAL REVIEW E
AbstractExtracting equilibrium information from nonequilibrium measurements is a challenge task of great importance in understanding the thermodynamic properties of physical, chemical, and biological systems. The discovery of the Jarzynski equality illumines the way to estimate the equilibrium free-energy difference from the work performed in nonequilibrium driving processes. However, the nonlinear (exponential) relation causes the poor convergence of the Jarzynski equality. Here, we propose a concise method to estimate the free-energy difference through a linear nonequilibrium equality which inherently converges faster than nonlinear nonequilibrium equalities. This linear nonequilibrium equality relies on an accelerated isothermal process which is realized by using a unified variational approach, named variational shortcuts to isothermality. We apply our method to an underdamped Brownian particle moving in a double-well potential. The simulations confirm that the method can be used to accurately estimate the free-energy difference with high efficiency. Especially during fast driving processes with high dissipation, the method can improve the accuracy by more than an order of magnitude compared with the estimator based on the nonlinear nonequilibrium equality.
Cooperation Status国内
Subject AreaPhysics
MOST Discipline CataloguePhysics, Fluids & Plasmas ; Physics, Mathematical
Indexed BySCIE
Citation statistics
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.China Acad Engn Phys, Grad Sch, Beijing 100193, Peoples R China
3.Tu, Z. C.] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Li, Geng,Tu, Z. C.. Equilibrium free-energy differences from a linear nonequilibrium equality[J]. PHYSICAL REVIEW E,2021,103(3):32146.
APA Li, Geng,&Tu, Z. C..(2021).Equilibrium free-energy differences from a linear nonequilibrium equality.PHYSICAL REVIEW E,103(3),32146.
MLA Li, Geng,et al."Equilibrium free-energy differences from a linear nonequilibrium equality".PHYSICAL REVIEW E 103.3(2021):32146.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Geng]'s Articles
[Tu, Z. C.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Geng]'s Articles
[Tu, Z. C.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Geng]'s Articles
[Tu, Z. C.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.