The multilevel four-stroke swap engine and its environment

Raam Uzdin; Ronnie Kosloff

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The multilevel four-stroke swap engine and its environment

Raam Uzdin, Ronnie Kosloff

Quantum Physics · Submitted 24 Apr 2014

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We relate the work and efficiency of the device to local and non-local statistical properties of the baths (purity, mutual coincidence etc.).

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What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.12 · human participants 0.01 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.24 · compares with prior results 0.06 · mentions code or data availability 0.02.

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arXiv listing abstract v1. Results and the main claim are underlined; show every role.

A multilevel four-stroke engine where the thermalization stokes are generated by unitary collisions with bath particles is analyzed. Our model is solvable even when the engine operates far from thermal equilibrium and in the strong system-bath coupling. Necessary operation conditions for the heat machine to perform as an engine or a refrigerator are derived. We relate the work and efficiency of the device to local and non-local statistical properties of the baths (purity, mutual coincidence etc.). In particular, we relate the Clausius inequality to the symmetrized relative entropy of the baths (Jefferys divergence). Other Clausius-like inequalities are derived as well. Finally, in the ultra-hot regime we optimize the work of the multilevel engine and obtain simpler forms for the work and efficiency.

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What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	A multilevel four-stroke engine where the thermalization stokes are generated by unitary collisions with bath particles is analyzed.	contribution 0.85	0.59	0.07	asserted 0.98
s1	Our model is solvable even when the engine operates far from thermal equilibrium and in the strong system-bath coupling.	result 0.63	0.88	0.16	asserted 1.00
s2	Necessary operation conditions for the heat machine to perform as an engine or a refrigerator are derived.	result 0.78	0.94	0.15	asserted 1.00
s3	We relate the work and efficiency of the device to local and non-local statistical properties of the baths (purity, mutual coincidence etc.).	result 0.78	0.93	0.19	asserted 1.00
s4	In particular, we relate the Clausius inequality to the symmetrized relative entropy of the baths (Jefferys divergence).	result 0.93	0.91	0.22	asserted 1.00
s5	Other Clausius-like inequalities are derived as well.	result 0.85	0.92	0.08	asserted 1.00
s6	Finally, in the ultra-hot regime we optimize the work of the multilevel engine and obtain simpler forms for the work and efficiency.	result 0.89	0.95	0.22	asserted 1.00

What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 1.00.

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arXiv listing abstract v1

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Original abstract

A multilevel four-stroke engine where the thermalization stokes are generated by unitary collisions with bath particles is analyzed. Our model is solvable even when the engine operates far from thermal equilibrium and in the strong system-bath coupling. Necessary operation conditions for the heat machine to perform as an engine or a refrigerator are derived. We relate the work and efficiency of the device to local and non-local statistical properties of the baths (purity, mutual coincidence etc.). In particular, we relate the Clausius inequality to the symmetrized relative entropy of the baths (Jefferys divergence). Other Clausius-like inequalities are derived as well. Finally, in the ultra-hot regime we optimize the work of the multilevel engine and obtain simpler forms for the work and efficiency.

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3 arXiv papers cite this in 10 sentences

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Papers citing it · 8 sentences without a confident label

Builds on it 1 paper

Yet, the analysis here includes the case of partial “swap” thermalization [ref] ($ξ≠1$).

Universal features in the efficiency of ultra hot quantum Otto engines · Introduction · 0.97

Cites it as background 1 paper

CMs are being routinely used in various areas such as weak continuous measurements [ref] , non-Markovian quantum dynamics [ref] , quantum thermodynamics [ref] and even quantum gravity [ref] .

Collisional picture of quantum optics with giant emitters · Introduction · 0.89

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