Two-time correlation functions and the Lee-Yang zeros for an interacting Bose gas
classification
❄️ cond-mat.stat-mech
cond-mat.quant-gas
keywords
zeroscorrelationfunctionslee-yangbosesystemtwo-timefunction
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Two-time correlation functions of a system of Bose particles are studied. We find relation of zeros of the correlation functions with the Lee-Yang zeros of partition function of the system. Obtained relation gives the possibility to observe the Lee-Yang zeros experimentally. A particular case of Bose particles on two levels is examined and zeros of two-time correlation functions and Lee-Yang zeros of partition function of the system are analyzed.
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