منابع مشابه
Physical States and String Symmetries
It is shown that if the momenta belong to an integral lattice, then every physical state of string theory leads to a symmetry of the scattering amplitudes. We discuss the role of this symmetry when the momenta are those provided by the usual D.D.F construction and show that the string compactified on the torus associated with the self-dual Lorentzian lattice, Π 25,1 possess the Fake Monster Lie...
متن کاملSymmetries and Special States in Two Dimensional String Theory
We use the W∞ symmetry of c = 1 quantum gravity to compute matrix model special state correlation functions. The results are compared, and found to agree, with expectations from the Liouville model. Work supported by a Harold W. Dodds Fellowship
متن کاملOn Physical States in c < 1 String Theory On Physical States in c < 1 String Theory
The BRST cohomology analysis of Lian and Zuckerman leads to physical states at all ghost number for c < 1 matter coupled to Liouville gravity. We show how these states are related to states at ghost numbers zero(pure vertex operator states – DK states) and ghost number one(ring elements) by means of descent equations. These descent equations follow from the double cohomology of the String BRST ...
متن کاملPhysical States in the W3 String
We present a review of some of the recent developments in the study of the W 3 string. One of the interesting features of the theory is that the physical spectrum includes states with non-standard ghost structure, such as excitations of the ghost fields, both for discrete-momentum and continuous-momentum states.
متن کاملString Theory Symmetries
A brief review of the status of duality symmetries in string theory is presented. The evidence is accumulating rapidly that an enormous group of duality symmetries, including perturbative T dualities and non-perturbative Sdualities, underlies string theory. It is my hope that an understanding of these symmetries will suggest the right way to formulate non-perturbative string theory. Whether or ...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 1995
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732395000818