| Issue |
EPL
Volume 89, Number 2, January 2010
|
|
|---|---|---|
| Article Number | 20004 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/89/20004 | |
| Published online | 02 February 2010 | |
Minimal temperature of quantum refrigerators
Institute of Chemistry, the Hebrew University - Jerusalem 91904, Israel
Corresponding author: ronnie@fh.huji.ac.il
Received:
13
November
2009
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
© EPLA, 2010
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