Títol:
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Energy-momentum tensor for scalar fields coupled to the dilaton in two dimensions
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Autor/a:
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Lombardo, Fernando C.; Mazzitelli, Francisco D.; Russo, J. G. (Jorge Guillermo)
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Altres autors:
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Universitat de Barcelona |
Abstract:
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We clarify some issues related to the evaluation of the mean value of the energy-momentum tensor for quantum scalar fields coupled to the dilaton field in two-dimensional gravity. Because of this coupling, the energy-momentum tensor for matter is not conserved and therefore it is not determined by the trace anomaly. We discuss different approximations for the calculation of the energy-momentum tensor and show how to obtain the correct amount of Hawking radiation. We also compute cosmological particle creation and quantum corrections to the Newtonian potential. |
Matèries:
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-Relativitat general (Física) -Gravitació -General relativity (Physics) -Gravitation |
Drets:
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(c) The American Physical Society, 1999
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Tipus de document:
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Article Article - Versió publicada |
Publicat per:
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The American Physical Society
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Compartir:
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