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We generalize the previously studied cosmological solutions in D-dimensional gravity with an antisymmetric (p+2)-form to the case when the spatial part of the metric is Ricci-flat rather than flat. These generalized solutions are…

General Relativity and Quantum Cosmology · Physics 2008-11-26 I. S. Goncharenko , V. D. Ivashchuk , S. Rudametkin-Aguilar , D. Singleton

A D-dimensional cosmological model with several scalar fields and antisymmetric (p+2)-form is considered. For dimensions D = 4m+1 = 5, 9, 13, ... and p = 2m-1 = 1, 3, 5, ... we obtain a family of new cosmological type solutions with…

High Energy Physics - Theory · Physics 2008-11-26 H. Dehnen , V. D. Ivashchuk , V. N. Melnikov

A family of generalized $S$-brane solutions with orthogonal intersection rules and $n$ Ricci-flat factor spaces in the theory with several scalar fields and antisymmetric forms is considered. Two subclasses of solutions with power-law and…

High Energy Physics - Theory · Physics 2009-11-10 V. D. Ivashchuk , V. N. Melnikov , A. B. Selivanov

In this paper we consider (n+1)-dimensional cosmological model with scalar field and antisymmetric (p+2)-form. Using an electric composite Sp-brane ansatz the field equations for the original system reduce to the equations for a Toda-like…

High Energy Physics - Theory · Physics 2008-11-26 V. D. Ivashchuk , D. Singleton

A (n+1)-dimensional cosmological model with a set of scalar fields and antisymmetric (p+2)-form is considered. Some of scalar fields may have negative kinetic terms, i.e. they may describe ``phantom'' fields. For certain odd dimensions (D =…

High Energy Physics - Theory · Physics 2007-05-23 H. Dehnen , V. D. Ivashchuk , V. N. Melnikov

Up to overall harmonic factors, the D8-brane solution of the massive type IIA supergravity theory is the product of nine-dimensional Minkowski space (the worldvolume) with the real line (the transverse space). We show that the equations of…

High Energy Physics - Theory · Physics 2015-06-26 D. Brecher , M. J. Perry

In this paper we consider $(n+1)$-dimensional cosmological model with scalar field and antisymmetric $(p+2)$-form. Using an electric composite $Sp$-brane ansatz the field equations for the original system reduce to the equations for a…

General Relativity and Quantum Cosmology · Physics 2007-05-23 V. D. Ivashchuk , D. Singleton

Electric S-brane solutions with two non-composite electric branes and a set of l scalar fields are considered. The intersection rules for branes correspond to Lie algebras A_2, C_2 and G_2. The solutions contain five factor spaces. One of…

High Energy Physics - Theory · Physics 2009-03-24 V. D. Ivashchuk , S. A. Kononogov , V. N. Melnikov

Certain supergravity solutions (including domain walls and the magnetic fivebrane) have recently been generalised by Brecher and Perry by relaxing the condition that the brane worldvolume be flat. In this way they obtain examples in which…

High Energy Physics - Theory · Physics 2015-06-26 JM Figueroa-O'Farrill

A family of generalized S-brane solutions with orthogonal intersection rules and n Ricci-flat factor spaces in the theory with several scalar fields, antisymmetric forms and multiple scalar potential is considered. Two subclasses of…

High Energy Physics - Theory · Physics 2016-11-09 V. D. Ivashchuk , V. N. Melnikov , S. -W. Kim

We show that six-dimensional supergravity models admit nonsingular solutions in the presence of flat three-brane sources with positive tensions. The models studied in this paper are nonlinear sigma models with the target spaces of the…

High Energy Physics - Theory · Physics 2008-11-26 V. P. Nair , S. Randjbar-Daemi

We obtain regular deformed D2-brane solutions with fractional D2-branes arising as wrapped D4-branes. The space transverse to the D2-brane is a complete Ricci-flat 7-manifold of G_2 holonomy, which is asymptotically conical with principal…

High Energy Physics - Theory · Physics 2009-09-17 M. Cvetic , G. W. Gibbons , H. Lu , C. N. Pope

An S-brane solution with two non-composite electric branes and a set of l scalar fields is considered. The intersection rule for branes corresponds to the Lie algebra A_2. The solution contains five factor spaces with the fifth one…

General Relativity and Quantum Cosmology · Physics 2008-11-26 J. -M. Alimi , V. D. Ivashchuk , V. N. Melnikov

A multidimensional gravitational model containing several dilatonic scalar fields and antisymmetric forms is considered. The manifold is chosen in the form M = M_0 x M_1 x ... x M_n, where M_i are Einstein spaces (i > 0). The block-diagonal…

High Energy Physics - Theory · Physics 2009-10-30 V. D. Ivashchuk , V. N. Melnikov

We obtain a solution to eleven-dimensional supergravity that consists of M2-branes embedded in a dielectric distribution of M5-branes. Contrary to normal expectations, this solution has maximal supersymmetry for a brane solution (i.e.…

High Energy Physics - Theory · Physics 2009-11-10 C. N. Pope , N. P. Warner

Multidimensional gravitational model on the manifold $M = M_0 \times \prod_{i=1}^{n} M_i$, where $M_i$ are Einstein spaces ($i \geq 1$), is considered. The action contains $m = 2^n -1$ dilatonic scalar fields $\phi^I$ and $m$…

High Energy Physics - Theory · Physics 2014-11-18 V. D. Ivashchuk , V. N. Melnikov

We construct generalized 11D supergravity solutions of fully localized intersecting D2/D4 brane systems. These solutions are obtained by embedding six-dimensional resolved Eguchi-Hanson conifolds lifted to M-theory. We reduce these…

High Energy Physics - Theory · Physics 2008-11-26 A. M. Ghezelbash

We comment on the recent papers by Costa et al and Emparan, which show how one might generate supergravity solutions describing certain dielectric branes in ten dimensions. The ``basic'' such solutions describe either N fundamental strings…

High Energy Physics - Theory · Physics 2009-11-07 D. Brecher , P. M. Saffin

We consider a gravitational model on a manifold M = M_0 x M_1 x...x M_n with oriented connected Einstein internal spaces M_1,...,M_n. The matter part of the action contains several scalar fields and antisymmetric forms. With Ricci-flat…

General Relativity and Quantum Cosmology · Physics 2008-02-03 V. D. Ivashchuk , V. N. Melnikov , M. Rainer

Composite fluxbrane and S-brane solutions for a wide class of intersection rules are considered. These solutions are defined on a product manifold R_{*} x M_1 x ... x M_n which contains n Ricci-flat spaces M_1, ..., M_n with 1-dimensional…

Mathematical Physics · Physics 2008-11-26 I. S. Goncharenko , V. D. Ivashchuk , V. N. Melnikov
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