Toward a Theory of Precursors

Details Toward a Theory of Precursors Toward a Theory of Precursors

2002-07-10

arxiv.org/abs/hep-th/0207083v1

Phys.Rev. D66 (2002) 106002

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 4 figures, Latex

Scientific paper

10.1103/PhysRevD.66.106002

To better understand the possible breakdown of locality in quantum gravitational systems, we pursue the identity of precursors in the context of AdS/CFT. Holography implies a breakdown of standard bulk locality which we expect to occur only at extremely high energy. We consider precursors that encode bulk information causally disconnected from the boundary and whose measurement involves nonlocal bulk processes. We construct a toy model of holography which encapsulates the expected properties of precursors and compare it with previous such discussions. If these precursors can be identified in the gauge theory, they are almost certainly Wilson loops, perhaps with decorations, but the relevant information is encoded in the high-energy sector of the theory and should not be observable by low energy measurements. This would be in accord with the locality bound, which serves as a criterion for situations where breakdown of bulk locality is expected.

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