Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-02-20
Phys.Lett. B527 (2002) 215-225
Physics
High Energy Physics
High Energy Physics - Theory
REVTeX 3.1, 7 t/c pp; significantly extended (final) version
Scientific paper
10.1016/S0370-2693(02)01182-6
We consider the D-dimensional massive dilaton gravity coupled to Maxwell and antisymmetric tensor fields (EMATD). We derive the full separability of this theory in static case. This discloses the core structure of the theory and yields the simple procedure of how to generate integrability classes. As an example we take a certain new class, obtain the two-parametric families of dyonic solutions. It turns out that at some conditions they tend to the D-dimensional dyonic Reissner-Nordstr\"om-deSitter solutions but with ``renormalized'' dyonic charge plus a small logarithmic correction. The latter has the significant influence on the global structure of the non-perturbed solution - it may shift and split horizons, break down extremality, and dress the naked singularity. We speculate on physical importance of the deduced integrability classes, in particular on their possible role in understanding of the problem of unknown dilaton potential in modern cosmological and low-energy string models.
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