Critical behaviours of contact near phase transitions
A central quantity of importance for ultracold atoms is contact, which measures two-body correlations at short distances in dilute systems. It appears in universal relations among thermodynamic quantities, such as large momentum tails, energy and dynamic structure factors, through the renowned Tan relations. However, a conceptual question remains open as to whether or not contact can signify phase transitions that are insensitive to short-range physics. Here we show that, near a continuous...[Show more]
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|Chen Y. Y...Guan, X. W. et al Critical behavious of contact near phase tranistions 2014.pdf||624.22 kB||Adobe PDF|
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