Persoon
We consider N = 4 theories on ALE spaces of A(k-1) type. As is well known, their partition functions coincide with A(k-1) affine characters. We show that these partition functions are equal to the generating functions of some peculiar classes of partitions which we introduce under the name 'orbifold
Abstract . We consider the topological B-model on local Calabi-Yau geometries. We show how one can solve for the amplitudes by using MediaObjects/s00220-005-1448-9flb1.gif-algebra symmetries which encode the symmetries of holomorphic diffeomorphisms of the Calabi-Yau. In the highly effective fermion
We argue that the holographic description of four-dimensional Bogomol'nyi-Prasad-Sommerfield black holes naturally includes multicenter solutions. This suggests that the holographic dual to the gauge theory is not a single AdS(2) x S-2 but a coherent ensemble of them. We verify this in a particular
We consider B-model large N duality for a new class of noncompact Calabi-Yau spaces modeled on the neighborhood of a ruled surface in a Calabi-Yau threefold. The closed string side of the transition is governed at genus zero by an A(1) Hitchin integrable system on a genus g Riemann surface Sigma. Th
The description of 4D BPS black holes in terms of branes wrapped on various cycles in a Calabi-Yau space gives us the opportunity to study various issues in quantum gravity in a definite way by means of the worldvolume theory of the branes. In the particular example discussed here, there is a simple
We introduce a notion of topological M-theory and argue that it provides a unification of form theories of gravity in various dimensions. Its classical solutions involve $G_2$ holonomy metrics on 7-manifolds, obtained from a topological action for a 3-form gauge field introduced by Hitchin. We show
Matrix model correlators show universal behaviour at short distances. We provide a derivation for these universal correlators by inserting probe branes in the underlying e®ective geometry. We generalize these results to study correlators of branes and their universal behaviour in the Calabi-Yau crys
Omhoog
Ga terug naar de inhoud
Ga terug naar de site navigatie