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Zoekopdracht: journal id: "physicalxreviewxletters"

AuteursK. Skenderis, B.C. van Rees
TitelReal-time gauge/gravity duality
TijdschriftPhysical Review Letters
Jaargang101
Jaar2008
Nummer8
Pagina's081601-
ISSN00319007
FaculteitFaculteit der Natuurwetenschappen, Wiskunde en Informatica
Instituut/afd.FNWI: Institute for Theoretical Physics (ITF)
FNWI: Korteweg-de Vries Institute for Mathematics (KdVI)
SamenvattingWe present a general prescription for the holographic computation of real-time n-point functions in nontrivial states. In quantum field theory such real-time computations involve a choice of a time contour in the complex time plane. The holographic prescription amounts to "filling in" this contour with bulk solutions: real segments of the contour are filled in with Lorentzian solutions while imaginary segments are filled in with Riemannian solutions and appropriate matching conditions are imposed at the corners of the contour. We illustrate the general discussion by computing the 2-point function of a scalar operator using this prescription and by showing that this leads to an unambiguous answer with the correct i epsilon insertions.
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