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Article Dans Une Revue Nuclear Physics Année : 2014

Correlation functions on conical defects

Résumé

We explore the new technique developed recently in \cite{Rosenhaus:2014woa} and suggest a correspondence between the N-point correlation functions on spacetime with conical defects and the (N+1)-point correlation functions in regular Minkowski spacetime. This correspondence suggests a new systematic way to evaluate the correlation functions on spacetimes with conical defects. We check the correspondence for the expectation value of a scalar operator and of the energy momentum tensor in a conformal field theory and obtain the exact agreement with the earlier derivations for cosmic string spacetime. We then use this correspondence and do the computations for a generic scalar operator and a conserved vector current. For generic unitary field theory we compute the expectation value of the energy momentum tensor using the known spectral representation of the 2-point correlators of stress-energy tensor in Minkowski spacetime.

Dates et versions

hal-01170175 , version 1 (01-07-2015)

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Sergey Solodukhin. Correlation functions on conical defects. Nuclear Physics, 2014, pp.23. ⟨10.1103/PhysRevD.91.044008⟩. ⟨hal-01170175⟩
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