Josephson wormhole in coupled superconducting Yukawa-Sachdev-Ye-Kitaev metals
Aravindh S. Shankar, Jasper Steenbergen, Stephan Plugge, Koenraad Schalm
DOI 10.1103/v2gn-l936 · Physical Review Research
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Abstract
We show that two Yukawa-SYK models with a weak tunneling contact can have an exotic hybrid superconducting thermofield-double-like state that is holographically dual to a traversable wormhole connecting two black holes with charged scalar hair. The hybrid superconducting thermofield-double/wormhole (TFD/WH) state is distinguishable by anomalous scaling of revival oscillations in the fermionic Green's function, but also in a unique Andreev revival in the anomalous Green's function. The existence of this TFD/WH state surprisingly shows that some quantum critical effects can survive the phase transition to superconductivity. This Andreev revival is in principle an accessible signature of the transition to the TFD/WH phase detectable in the ac Josephson current.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La3Ni2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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