Spacetime in String Theory

Details Spacetime in String Theory Spacetime in String Theory

2004-10-11

arxiv.org/abs/gr-qc/0410049v3

New J.Phys. 7 (2005) 201

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages; references added

Scientific paper

10.1088/1367-2630/7/1/201

We give a brief overview of the nature of spacetime emerging from string theory. This is radically different from the familiar spacetime of Einstein's relativity. At a perturbative level, the spacetime metric appears as ``coupling constants" in a two dimensional quantum field theory. Nonperturbatively (with certain boundary conditions), spacetime is not fundamental but must be reconstructed from a holographic, dual theory.

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