First sound in holographic superfluids at zero temperature

被引:10
作者
Esposito, Angelo [1 ]
Garcia-Saenz, Sebastian
Penco, Riccardo
机构
[1] Columbia Univ, Phys Dept, Ctr Theoret Phys, New York, NY 10027 USA
基金
美国能源部;
关键词
Holography and condensed matter physics (AdS/CMT); AdS-CFT Correspondence; Effective field theories;
D O I
10.1007/JHEP12(2016)136
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Within the context of AdS/CFT, the gravity dual of an s-wave superfluid is given by scalar QED on an asymptotically AdS spacetime. While this conclusion is vastly supported by numerical arguments, here we provide an analytical proof that this is indeed the case. Working at zero temperature, we explicitly find the quadratic action for the superfluid phonon at the boundary in an arbitrary number of dimensions and for an arbitrary scalar field potential, recovering the known dispersion relation for conformal first sound.
引用
收藏
页数:12
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