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AdS2 Quantum Gravity and String Theory

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arxiv hep-th/9809027 v2 pith:MRWFEBLD submitted 1998-09-03 hep-th

AdS2 Quantum Gravity and String Theory

classification hep-th
keywords ads2conformalfieldgravitygroupstringtheoryads3
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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AdS2 has an SL(2,R) isometry group. It is argued that in the context of quantum gravity on AdS2 this group is enlarged to the full infinite-dimensional 1+1 conformal group. Massive scalar fields are coupled to AdS2 gravity and shown to have associated conformal weights h(m) shifted by their mass. For integral values of h primary boundary operators are obtained as h normal derivatives of the scalar field. AdS2 string theories arise in the `very-near-horizon' limit of S1-compactified AdS3 string theories. This limit corresponds to energies far below the compactification scale. The dual conformal field theory has one null dimension and can in certain cases be described as the discrete light cone quantization of a two-dimensional deformed symmetric-product conformal field theory. Evidence is given that the AdS2 Virasoro algebra is related to the right-moving AdS3 Virasoro algebra by a topological twist which shifts the central charge to zero.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

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  2. Superconformal mechanics from N-extended Euler-Calogero-Moser and Calogero models

    hep-th 2026-07 conditional novelty 6.0

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  3. Classical Unattainability of Extremality in non-BPS D-brane Systems

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    For a non-BPS four-charge D-brane system in N=8 string theory, the worldline potential has no classical zero-energy minimum, so extremality is unattainable; entropy is proposed as the logarithm of the number of isolat...

  4. Superconformal mechanics from N-extended Euler-Calogero-Moser and Calogero models

    hep-th 2026-07 unverdicted novelty 5.0

    Two-particle N-extended Euler-Calogero-Moser models produce SU(1,1|N) superconformal mechanics after center-of-mass decoupling; the Calogero case yields only Osp(N|2).