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00925njm 22002777a 4500 dc Barceló, C. author Garay Elizondo, Luis Javier author 1998-08 The effects of asymptotically anti-de Sitter wormholes in low-energy field theory are calculated in full detail for three different matter contents: a conformal scalar field, an electromagnetic field and gravitons. There exists a close relation between the choice of vacuum for the matter fields and the selection of a basis of the Hilbert space of anti-de Sitter wormholes. In the presence of conformal matter (i.e., conformal scalar or electromagnetic fields), this relation allows us to interpret the elements of these bases as wormhole states containing a given number of particles. This interpretation is subject to the same kind of ambiguity in the definition of particle as that arising from quantum field theory in curved spacetime. In the case of gravitons, owing to the nonconformal coupling, it is not possible to describe wormhole states in terms of their particle content. 0218-2718 10.1142/S0218271898000425 https://hdl.handle.net/20.500.14352/59540 http://dx.doi.org/10.1142/S0218271898000425 http://www.worldscientific.com http://arxiv.org/pdf/gr-qc/9803035v1.pdf Wormhole effective interactions in anti-de Sitter spacetime