منابع مشابه
M-theory on manifolds . . .
In 1982 the concept of holonomy was introduced into Kaluza-Klein theory as a way of counting the number of supersymmetries surviving compactification. The first non-trivial example was provided by D = 11 supergravity on the squashed S 7 , whose G 2 holonomy yields N = 1 in D = 4. In 1983 another example was provided by D = 11 supergravity on K3, whose SU (2) holonomy yields half the maximum sup...
متن کاملM-Theory on a Supermanifold
A conjectured finite M-theory based on eleven-dimensional supergravity formulated in a superspace with a non-anticommutative ♦-product of field operators is proposed. Supermembranes are incorporated in the superspace ♦-product formalism. When the deformed supersymmetry invariant action of eleven-dimensional supergravity theory is expanded about the standard supersymmetry invariant action, the s...
متن کاملM(embrane) Theory on T
An 'algebraic' approach to M-theory is briefly reviewed, and a proposal is made for a similar algebraic structure underlying the T 9 compactification of 'M(embrane) theory', i.e. the M(atrix) model with area-preserving diffeomorphism gauge group.
متن کاملM-Theory on Eight-Manifolds
We show that in certain compactifications of M-theory on eight-manifolds to threedimensional Minkowski space-time the four-form field strength can have a non-vanishing expectation value, while an N = 2 supersymmetry is preserved. For these compactifications a warp factor for the metric has to be taken into account. This warp factor is non-trivial in three space-time dimensions due to Chern-Simo...
متن کاملLectures on Heterotic M-Theory
We present three lectures on heterotic M -theory and a fourth lecture extending this theory to more general orbifolds. In Lecture 1, Hořava-Witten theory is briefly discussed. We then compactify this theory on Calabi-Yau threefolds, choosing the “standard” embedding of the spin connection in the gauge connection. We derive, in detail, both the five-dimensional effective action and the associate...
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ژورنال
عنوان ژورنال: Journal of Astrophysics and Astronomy
سال: 1999
ISSN: 0250-6335,0973-7758
DOI: 10.1007/bf02702349