Energy momentum tensor for scalar fields coupled to the dilaton in two-dimensions - INSPIRE

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Energy momentum tensor for scalar fields coupled to the dilaton in two-dimensions

Aug, 1998

17 pages

Published in:

Phys.Rev.D 59 (1999) 064007

e-Print:

gr-qc/9808048 [gr-qc]

DOI:

10.1103/PhysRevD.59.064007

View in:

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Abstract: (arXiv)

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 the 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.

gravitation
field theory: scalar
field theory: dilaton
dimension: 2
tensor: energy-momentum
quantum gravity
approximation: semiclassical

References(14)

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