Pair excitations, collective modes, and gauge invariance in the BCS-Bose-Einstein crossover scenario

YING-JER KAO2018-09-102018-09-102000http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000086937700080&KeyUID=WOS:000086937700080http://scholars.lib.ntu.edu.tw/handle/123456789/288921Pair excitations, collective modes, and gauge invariance in the BCS-Bose-Einstein crossover scenariojournal article10.1103/PhysRevB.61.116622-s2.0-18244368720