Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1995-11-05
Mod.Phys.Lett.A10:2001-2008,1995
Physics
High Energy Physics
High Energy Physics - Theory
9 pages, LATex file, to appear in Mod.Phys.Lett.A
Scientific paper
10.1142/S0217732395002155
Using the renormalization-group formalism, a sigma model of a special type- in which the metric and the dilaton depend explicitly on one of the string coordinates only-is investigated near two dimensions. It is seen that dilatonic gravity coupled to N scalar fields can be expressed in this form, using a string parametrization, and that it possesses the usual UV fixed point. However,in this stringy parametrization of the theory the fixed point for the scalar-dilaton coupling turns out to be trivial, while the fixed point for the gravitational coupling remains to be the same as in previous studies being, in particular, non-trivial.
Elizalde Emilio
Odintsov Sergei D.
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