Multidimensional Cosmological and Spherically Symmetric Solutions with Intersecting p-branes
نویسندگان
چکیده
Multidimensional model describing the cosmological evolution and/ or spherically symmetric configuration with (n+1) Einstein spaces in the theory with several scalar fields and forms is considered. When electro-magnetic composite p-brane ansatz is adopted, n ”internal” spaces are Ricci-flat, one space M0 has a non-zero curvature, and all p-branes do not ”live” in M0, a class of exact solutions is obtained if certain block-orthogonality relations on p-brane vectors are imposed. A subclass of spherically-symmetric solutions containing non-extremal p-brane black holes is considered. Post-Newtonian parameters are calculated and some examples are considered.
منابع مشابه
ar X iv : g r - qc / 9 90 10 01 v 2 2 5 Fe b 20 02 Multidimensional cosmological and spherically symmetric solutions with intersecting p - branes
Multidimensional model describing the " cosmological " and/ or spherically symmetric configuration with (n + 1) Einstein spaces in the theory with several scalar fields and forms is considered. When electromagnetic composite p-brane ansatz is adopted, n " internal " spaces are Ricci-flat, one space M 0 has a non-zero curvature, and all p-branes do not " live " in M 0 , a class of exact solution...
متن کاملMultidimensional Classical and Quantum Cosmology with Intersecting p-branes
Multidimensional cosmological model describing the evolution of (n + 1) Einstein spaces in the theory with several scalar fields and forms is considered. When a (electro-magnetic composite) p-brane Ansatz is adopted the field equations are reduced to the equations for Toda-like system. The Wheeler–De Witt equation is obtained. In the case when n ”internal” spaces are Ricci-flat, one space M0 ha...
متن کاملP-brane Black Holes as Stability Islands
In multidimensional gravity with an arbitrary number of internal Ricci-flat factor spaces, interacting with electric and magnetic p -branes, spherically symmetric configurations are considered. It is shown that all single-brane black hole solutions are stable under spherically symmetric perturbations, whereas similar solutions possessing naked singularities turn out to be catastrophically unsta...
متن کاملThe effective σ-model of multidimensional gravity
The properties of the effective σ-model for D-dimensional Einstein gravity based on multidimensional geometries is analyzed. Besides pure geometry additional minimally coupled scalars and (p + 2)-forms are considered which yield an extended target space after reduction to the effective D0-dimensional geometry. The target space is always a homogeneous space. Exact solutions exist provided an ort...
متن کاملExact solutions in multidimensional gravity with antisymmetric forms
This topical review deals with a multidimensional gravitational model containing dilatonic scalar fields and antisymmetric forms. The manifold is chosen in the form M = M0 ×M1 × . . .×Mn, where Mi are Einstein spaces (i ≥ 1). The sigma-model approach and exact solutions in the model are reviewed and the solutions with p-branes (e.g. Majumdar-Papapetrou-type, cosmological, spherically symmetric,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1994