279 citations · 980 across the 9 of their papers we have counts for
6 papers · 1 filter
The interplay between cycle geometry and performance of sudden refrigerators
Tova Feldmann, Ronnie Kosloff
The relation between the geometry of refrigeration cycles and their performance is explored. The model studied is based on a coupled spin system. Small cycle times termed sudden re…
Short Time Cycles of Purely Quantum Refrigerators
Tova Feldmann, Ronnie Kosloff
Four stroke Otto refrigerator cycles with no classical analogue are studied. Extremely short cycle times with respect to the internal time scale of the working medium characterize…
Optimal Performance of Quantum Refrigerators
Tova Feldmann, Ronnie Kosloff
A reciprocating quantum refrigerator is studied with the purpose of determining the limitations of cooling to absolute zero. We find that if the energy spectrum of the working medi…
Quantum Lubrication: Suppression of Friction in a First Principle Four Stroke Heat Engine
Tova Feldmann, Ronnie Kosloff
A quantum model of a heat engine resembling the Otto cycle is employed to explore strategies to suppress frictional losses. These losses are caused by the inability of the engine's…
Characteristics of the Limit Cycle of a Reciprocating Quantum Heat Engine
Tova Feldmann, Ronnie Kosloff
When a reciprocating heat engine is started it eventually settles to a stable mode of operation. The approach of a first principle quantum heat engine toward this stable limit cycl…
The Quantum Four Stroke Heat Engine: Thermodynamic Observables in a Model with Intrinsic Friction
Tova Feldmann, Ronnie Kosloff
The fundamentals of a quantum heat engine are derived from first principles. The study is based on the equation of motion of a minimum set of operators which is then used to define…