On observational predictions from multidimensional gravity

We discuss possible observational manifestations of static, spherically symmetric solutions of a class of multidimensional theories of gravity, which includes the low energy limits of supergravities and superstring theories as special cases. We discuss the choice of a physical conformal frame to be used for the description of observations. General expressions are given for (i) the Eddington parameters β and γ, characterizing the post-Newtonian gravitational field of a central body, (ii) p-brane black hole temperatures in different conformal frames and (iii) the Coulomb law modified by extra dimensions. It is concluded, in particular, that β and γ depend on the integration constants and can be therefore different for different central bodies. If, however, the Einstein frame is adopted for describing observations, we always obtain γ = 1. The modified Coulomb law is shown to be independent of the choice of a 4-dimensional conformal frame. We also argue the possible existence of specific multidimensional objects, T-holes, potentially observable as bodies with mirror surfaces.

Authors
Bronnikov K.A. 1, 2 , Melnikov N.V.1, 2, 3
Number of issue
9
Language
English
Pages
1549-1578
Status
Published
Volume
33
Year
2001
Organizations
  • 1 Ctr. for Gravitation and Fundam. M., VNIIMS, 3-1 M. Ulyanovoy St., Moscow 117313, Russian Federation
  • 2 Inst. of Gravitation and Cosmology, PFUR, 6 Miklukho-Maklaya St., Moscow 117198, Russian Federation
  • 3 Depto. de Fisica, CINVESTAV-IPN, Apartado Postal 14-740, Mexico 07000, D.F., Mexico
Keywords
Alternative theories; Multidimensional gravity; Observables
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/317/