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Past exam of the mathematics course of the University of Cambridge / 2022 / iii / Paper 344 / 3 / e

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2022 iii Paper 344 3
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e
The first law of thermodynamics, with ΔQ defined as heat lost by the particle to the bath, is
ΔH=W−ΔQ.
(1)
Thus W−ΔH=ΔQ, and part d becomes the local detailed balance identity
PB​PF​​=eβΔQ.​
(2)
The logarithmic path-probability ratio is the bath's entropy production ΔSbath​=ΔQ/T in units of kB​.

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