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Quantum Bath Refrigeration towards Absolute Zero: Challenging the Unattainability Principle.
- Source :
-
Physical Review Letters . 8/31/2012, Vol. 109 Issue 9, p1-5. 5p. - Publication Year :
- 2012
-
Abstract
- A minimal model of a quantum refrigerator, i.e., a periodically phase-flipped two-level system permanently coupled to a finite-capacity bath (cold bath) and an infinite heat dump (hot bath), is introduced and used to investigate the cooling of the cold bath towards absolute zero (T = 0). Remarkably, the temperature scaling of the cold-bath cooling rate reveals that it does not vanish as T→ 0 for certain realistic quantized baths, e.g., phonons in strongly disordered media (fractons) or quantized spin waves in ferromagnets (magnons). This result challenges Nernst's third-law formulation known as the unattainability principle. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 109
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 82338501
- Full Text :
- https://doi.org/10.1103/PhysRevLett.109.090601