منابع مشابه
Chiral non - critical strings ∗
It is shown that conformal matter with cL 6= cR can be consistently coupled to two-dimensional ‘frame’ gravity. The theory is quantized in conformal gauge, following David, and Distler and Kawai. There is no analogue of the c = 1 barrier found in nonchiral non-critical strings. A non-critical heterotic string is constructed—it has 744 states in its spectrum, transforming in the adjoint represen...
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This is a set of lectures on the gauge/string duality and non-critical strings, with a particular emphasis on the discretized, or matrix model, approach. After a general discussion of various points of view, I describe the recent generalization to four dimensional non-critical (or five dimensional critical) string theories of the matrix model approach. This yields fully non-perturbative and exp...
متن کاملSome Properties of ( Non ) Critical Strings
We review some recent developments in string theory, emphasizing the importance of vacuum instabilities, their relation to the density of states, and the role of space-time fermions in non-critical string theory. We also discuss the classical dynamics of two dimensional string theory. In the last few years many people have been studying simple models of string theory , which correspond to strin...
متن کاملBPS States of Exceptional Non-Critical Strings
We study the BPS states of non-critical strings which arise for zero size instantons of exceptional groups. This is accomplished by using F-theory and M-theory duals and by employing mirror symmetry to compute the degeneracy of membranes wrapped around 2-cycles of the Calabi–Yau threefold. We find evidence for a number of novel physical phenomena, including having infinitely many light states w...
متن کاملNon-critical Non-singular Bosonic Strings, Linear Dilatons and Holography
AdS5 with linear dilaton and non vanishing B-field is shown to be a solution of the non critical string beta function equations. A non critical (D = 5) solution interpolating between flat space-time and AdS5, with asymptotic linear dilaton and non vanishing Bfield is also presented. This solution is free of space-time singularities and has got the string coupling constant everywhere bounded. Bo...
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 1994
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/11/4/012