Efficiency Fluctuations in Microscopic Machines

Manikandan, Sreekanth K.Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden. (författare)

QC 20190724
Nanoscale machines are strongly influenced by thermal fluctuations, contrary to their macroscopic counterparts. As a consequence, even the efficiency of such microscopic machines becomes a fluctuating random variable. Using geometric properties and the fluctuation theorem for the total entropy production, a universal theory of efficiency fluctuations at long times, for machines with a finite state space, was developed by Verley et al. [Nat. Commun. 5, 4721 (2014); Phys. Rev. E 90, 052145 (2014)]. We extend this theory to machines with an arbitrary state space. Thereby, we work out more detailed prerequisites for the universal features and explain under which circumstances deviations can occur. We also illustrate our findings with exact results for two nontrivial models of colloidal engines.

Dabelow, LennartUniv Bielefeld, Fak Phys, D-33615 Bielefeld, Germany. (författare)
Eichhorn, RalfKTH,Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Nordic Institute for Theoretical Physics NORDITA(Swepub:kth)u1r6lywk (författare)
Krishnamurthy, SupriyaStockholms universitet,Fysikum,Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.(Swepub:su)supriya (författare)
Stockholms universitetFysikum (creator_code:org_t)

Av författaren/redakt...: Manikandan, Sree ...; Dabelow, Lennart; Eichhorn, Ralf; Krishnamurthy, S ...

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