ar X iv : h ep - t h / 93 06 05 7 v 1 1 1 Ju n 19 93 HUPAPP - 93 / 1 Spacetime Variable Superstring Vacua ( Calabi - Yau Cosmic Yarn )
نویسندگان
چکیده
In a general superstring vacuum configuration, the ‘internal’ space (sector) varies in spacetime. When this variation is nontrivial only in two space-like dimensions, the vacuum contains static cosmic strings with finite energy per unit length and which is, up to interactions with matter, an easily computed topological invariant. The total spacetime is smooth although the ‘internal’ space is singular at the center of each cosmic string. In a similar analysis of the Wick-rotated Euclidean model, these cosmic strings acquire expected self-interactions. Also, a possibility emerges to define a global time in order to rotate back to the Lorentzian case.
منابع مشابه
ar X iv : h ep - t h / 93 06 10 4 v 2 2 2 Ju n 19 93 IASSNS - HEP - 93 / 36 SPACE - TIME TRANSITIONS IN STRING THEORY ⋆
Simple mean field methods can be used to describe transitions between different space-time models in string theory. These include transitions between different Calabi-Yau manifolds, and more exotic things such as the Calabi-Yau/Landau-Ginzberg correspondence.
متن کاملar X iv : h ep - t h / 05 06 19 5 v 1 2 3 Ju n 20 05 Geometric transitions and mixed Hodge structures
We formulate and prove a B-model disc level large N duality result for general conifold transitions between compact Calabi-Yau spaces using degenerations of Hodge structures.
متن کاملar X iv : h ep - t h / 93 06 15 6 v 1 3 0 Ju n 19 93 McGill / 93 - 18 hep - th / 9306156 June 1993 Recent Developments in Fractional Superstrings ∗
Fractional superstrings experience new types of “internal projections” which alter or deform their underlying worldsheet conformal field theories. In this talk I summarize some recent results concerning both the worldsheet theory which remains after the internal projections have acted, and the spacetime statistics properties of its various sectors. ∗ Talk presented at SUSY-93: International Wor...
متن کاملar X iv : h ep - t h / 93 06 05 8 v 1 1 2 Ju n 19 93 Representations of The Coordinate Ring of GL
It is shown that the finite dimensional irreducible representations of the quantum matrix algebra Mq(n) ( the coordinate ring of GLq(n) ) exist only when q is a root of unity ( q = 1 ). The dimensions of these representations can only be one of the following values: p N 2 where N = n(n−1) 2 and k ∈ {0, 1, 2, ...N} For each k the topology of the space of states is (S1)×(N−k) × [0, 1](×(k) (i.e. ...
متن کاملar X iv : h ep - t h / 05 06 19 6 v 1 2 3 Ju n 20 05 Geometric transitions and integrable systems
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 A1 Hitchin integrable system on a genus g Riemann surface Σ. The open string side is described by a holomorphic Chern-Simons theory which reduces to a generalized mat...
متن کامل