Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines.

ABSTRACT: One of the principal objectives of quantum thermodynamics is to explore quantum effects and their potential beneficial role in thermodynamic tasks like work extraction or refrigeration. So far, even though several papers have already shown that quantum effect could indeed bring quantum advantages, a global and deeper understanding is still lacking. Here, we extend previous models of autonomous machines to include quantum batteries made of arbitrary systems of discrete spectrum. We establish their actual efficiency, which allows us to derive an efficiency upper bound, called maximal achievable efficiency, shown to be always achievable, in contrast with previous upper bounds based only on the Second Law. Such maximal achievable efficiency can be expressed simply in term of the apparent tempe

SUBMITTER: Latune CL 

PROVIDER: S-EPMC6395647 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature