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pro vyhledávání: '"Jeschek, Claus"'
Autor:
Jeschek, Claus, Witt, Frederik
Publikováno v:
Fortsch.Phys.59:494-517,2011
In the context of generalised geometry we investigate reductions to $SU(m)\times SU(m)$ together with an integrability condition which in dimension 6 describes the geometry of type II supergravity compactifications.
Externí odkaz:
http://arxiv.org/abs/math/0510131
Autor:
Jeschek, Claus, Witt, Frederik
Publikováno v:
JHEP0503:053,2005
The recent mathematical literature introduces generalised geometries which are defined by a reduction from the structure group $SO(d,d)$ of the vector bundle $T^d\oplus T^{d*}$ to a special subgroup. In this article we show that compactification of I
Externí odkaz:
http://arxiv.org/abs/hep-th/0412280
Publikováno v:
Int.J.Mod.Phys. A21 (2006) 2377-2390
We consider topological sigma models with generalized Kahler target spaces. The mirror map is constructed explicitly for a special class of target spaces and the topological A and B model are shown to be mirror pairs in the sense that the observables
Externí odkaz:
http://arxiv.org/abs/hep-th/0408169
Autor:
Behrndt, Klaus, Jeschek, Claus
We consider compactifications of M-theory on 7-manifolds in the presence of 4-form fluxes, which leave at least four supercharges unbroken. Supersymmetric vacua admit G-structures and we discuss the cases of G_2-, SU(3)- as well as SU(2)-structures.
Externí odkaz:
http://arxiv.org/abs/hep-th/0406138
Autor:
Jeschek, Claus
We use the differential geometrical framework of generalized (almost) Calabi-Yau structures to reconsider the concept of mirror symmetry. It is shown that not only the metric and B-field but also the algebraic structures are uniquely mapped. As an ex
Externí odkaz:
http://arxiv.org/abs/hep-th/0406046
Autor:
Behrndt, Klaus, Jeschek, Claus
Publikováno v:
Class.Quant.Grav.21:S1533-1538,2004
In flux compactifications of M-theory a superpotential is generated whose explicit form depends on the structure group of the 7-dimensional internal manifold. In this note, we discuss superpotentials for the structure groups: G_2, SU(3) or SU(2). For
Externí odkaz:
http://arxiv.org/abs/hep-th/0401019
Autor:
Behrndt, Klaus, Jeschek, Claus
Publikováno v:
Nucl.Phys. B694 (2004) 99-114
We consider compactifications of M-theory on 7-manifolds in the presence of 4-form fluxes, which leave at least four supercharges unbroken. We focus especially on the case, where the 7-manifold supports two spinors which are SU(3) singlets and the fl
Externí odkaz:
http://arxiv.org/abs/hep-th/0311119
Autor:
Behrndt, Klaus, Jeschek, Claus
Publikováno v:
JHEP 0304:002,2003
We consider warp compactifications of M-theory on 7-manifolds in the presence of 4-form fluxes and investigate the constraints imposed by supersymmetry. As long as the 7-manifold supports only one Killing spinor we infer from the Killing spinor equat
Externí odkaz:
http://arxiv.org/abs/hep-th/0302047
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