More on Complex Sachdev-Ye-Kitaev Eternal Wormholes
arXiv:2011.10360
Abstract
In this work, we study a generalization of the coupled Sachdev-Ye-Kitaev (SYK) model with charge conservations. The model contains two copies of the complex SYK model at different chemical potentials, coupled by a direct hopping term. In the zero-temperature and small coupling limit with small averaged chemical potential, the ground state is an eternal wormhole connecting two sides, with a specific charge , which is equivalent to a thermofield double state. We derive the conformal Green's functions and determine corresponding IR parameters. At higher chemical potential, the system transit into the black hole phase. We further derive the Schwarzian effective action and study its quench dynamics. Finally, we compare numerical results with the analytical predictions.
arXiv comment22 pages, 6 figures
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