(Non)perturbative gravity, nonlocality, and nice slices

Abstract

Perturbative dynamics of gravity is investigated for high energy scattering and in black hole backgrounds. In the latter case, a straightforward perturbative analysis fails, in a close parallel to the failure of the former when the impact parameter reaches the Schwarzschild radius. This suggests a flaw in a semiclassical description of physics on spatial slices that intersect both outgoing Hawking radiation and matter that has carried information into a black hole; such slices are instrumental in a general argument for black hole information loss. This indicates a possible role for the proposal that nonperturbative gravitational physics is intrinsically nonlocal.

21 pages, harvmac. v2: minor wording changes and added references

References in corpus (2)

• Black hole information, unitarity, and nonlocality
• Locality in quantum gravity and string theory

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