Eternal Wormhole Behavior in Critical Spin Chains

Taking the ground state of two weakly coupled Sachdev-Ye-Kitaev models and perturbing one side, the excitation emerges on the other side, oscillating back and forth, consistent with a particle traversing an eternal wormhole. We show that spin systems with no simple gravitational dual exhibit similar behavior. In particular, 1+1-dimensional conformal field theories realize an eternal wormhole phase. We provide a microscopic description in terms of operator spreading resulting in a speed-up of information transfer. The limited amount of required experimental control eases study in analog quantum simulators, such as arrays of Rydberg atoms.

Pizza and drinks will be served after the seminar in ATL 2117.