Minimal temperature of quantum refrigerators
Institute of Chemistry, the Hebrew University - Jerusalem 91904, Israel
Corresponding author: email@example.com
Accepted: 22 December 2009
A first-principle reciprocating quantum refrigerator is investigated to determine the limitations of cooling to absolute zero. If the energy spectrum of the working medium possesses an uncontrollable gap, then there is a minimum achievable temperature above zero. Such a gap, combined with a negligible amount of noise, prevents adiabatic following during the expansion stage which is the necessary condition for reaching Tc 0.
PACS: 07.20.Pe – Heat engines; heat pumps; heat pipes / 03.65.Yz – Decoherence; open systems; quantum statistical methods / 05.70.Ln – Nonequilibrium and irreversible thermodynamics
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