期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.190601
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资金
- Deutsche Forschungsgemeinschaft (DFG) [SFB TR12]
- Center for Nanoscience (CeNS) Munich
- German Excellence Initiative via the Nanosystems Initiative Munich (NIM)
We show that work distributions and nonequilibrium work fluctuation theorems can be measured in optical spectra for a wide class of quantum systems. We consider systems where the absorption or emission of a photon corresponds to the sudden switch on or off of a local perturbation. For the particular case of a weak local perturbation, the Crooks relation establishes a universal relation in absorption as well as in emission spectra. Because of a direct relation between the spectra and work distribution functions this is equivalent to universal relations in work distributions for weak local quenches. As two concrete examples we treat the x-ray edge problem and the Kondo exciton.
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