Shocks and Information Exchange in de Sitter Space

Abstract

We discuss some implications of recent progress in understanding the black hole information paradox for complementarity in de Sitter space. Extending recent work by two of the authors, we describe a bulk procedure that allows information expelled through the cosmological horizon to be received by an antipodal observer. Generically, this information transfer takes a scrambling time t = H −1 log(S dS ). We emphasize that this procedure relies crucially on selection of the Bunch-Davies vacuum state, interpreted as the thermofield double state that maximally entangles two antipodal static patches. The procedure also requires the presence of an (entangled) energy reservoir, created by the collection of Hawking modes from the cosmological horizon. We show how this procedure avoids a cloning paradox and comment on its implications for information recovery in de Sitter space.

Asymptotic Observables and the Swampland

“…It is plausible that a similar notion of cosmic horizon complementarity is relevant here, so that the global structure of the eternally inflating spacetime is encoded in the radiation emitted from the cosmic horizon [55,71], ostensibly allowing the census taker to define a global measure on the spacetime beyond her horizon [68]. Similarities between de Sitter cosmic horizons and black hole horizons have recently been investigated in [72][73][74].…”