منابع مشابه
G 2 Domain Walls in M-theory
M-theory is considered in its low-energy limit on a G2 manifold with non-vanishing flux. Using the Killing spinor equations for linear flux, an explicit set of first-order bosonic equations for supersymmetric solutions is found. These solutions describe a warped product of a domain wall in four-dimensional space-time and a deformed G2 manifold. It is shown how these domain walls arise from the ...
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We discuss the vertical dimensional reduction of M-branes to domain walls in D = 7 and D = 4, by dimensional reduction on Ricci-flat 4-manifolds and 7-manifolds. In order to interpret the vertically-reduced 5-brane as a domain wall solution of a dimensionally-reduced theory in D = 7, it is necessary to generalise the usual Kaluza-Klein ansatz, so that the 3-form potential in D = 11 has an addit...
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The recent proposal by Hawking and Turok for obtaining an open inflationary universe from singular instantons makes use of low-energy effective Lagrangians describing gravity coupled to scalars and non-propagating antisymmetric tensors. In this paper we derive some exact results for Lagrangians of this type, obtained from spherical compactifications of M-theory and string theory. In the case of...
متن کاملTheory of topological edges and domain walls.
We investigate domain walls between topologically ordered phases in two spatial dimensions. We present a method which allows for the determination of the superselection sectors of excitations of such walls and which leads to a unified description of the kinematics of a wall and the two phases to either side of it. This incorporates a description of scattering processes at domain walls which can...
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Compactification of M theory in the presence ofG-fluxes yieldsN = 2 five-dimensional gauged supergravity with a potential that lifts all supersymmetric vacua. We derive the effective superpotential directly from the Kaluza-Klein reduction of the eleven-dimensional action on a Calabi-Yau three-fold and compare it with the superpotential obtained by means of calibrations. We discuss an explicit d...
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ژورنال
عنوان ژورنال: Journal of Geometry and Physics
سال: 2000
ISSN: 0393-0440
DOI: 10.1016/s0393-0440(99)00036-4