منابع مشابه
Effective Superstrings
We generalize the method of quantizing effective strings proposed by Polchinski and Strominger to superstrings. The Ramond-Neveu-Schwarz string is different from the Green-Schwarz string in non-critical dimensions. Both are anomaly-free and Poincare invariant. Some implications of the results are discussed. The formal analogy with 4D (super)gravity is pointed out.
متن کاملCosmic superstrings.
Cosmic superstrings are expected to be formed at the end of brane inflation, within the context of brane-world cosmological models inspired from string theory. By studying the properties of cosmic superstring networks and comparing their phenomenological consequences against observational data, we aim to pin down the successful and natural inflationary model and get an insight into the stringy ...
متن کاملA hierarchy of superstrings.
We construct a hierarchy of supersymmetric string theories by showing that the general N -extended superstrings may be viewed as a special class of the (N + 1)-extended superstrings. As a side result, we nd a twisted (N + 2) superconformal algebra realized in the N -extended string. e-mail address: [email protected] e-mail address: [email protected], [email protected] Permanent a...
متن کاملStatus of Fractional Superstrings
We argue why it is important to search beyond the superstring for consistent string theories that have space-time supersymmetry with critical space-time dimensions less than 10. We give a lengthy introduction on the motivation and approach. We discuss briefly some promising possibilities, namely, fractional superstrings. More specifically, we consider the K = 4, or spin-4/3 fractional superstri...
متن کاملSuperstrings from Supergravity
We study the origins of the five ten–dimensional “matrix superstring” theories, supplementing old results with new ones, and find that they all fit into a unified framework. In all cases the matrix definition of the string in the limit of vanishingly small coupling is a trivial 1+1 dimensional infra–red fixed point (an orbifold conformal field theory) characterized uniquely by matrix versions o...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1989
ISSN: 0556-2821
DOI: 10.1103/physrevd.39.1611