Imbimbo, Camillo ; Mahapatra, Swapna ; Mukhi, Sunil (1992) Construction of physical states of non-trivial ghost number in c < 1 string theory Nuclear Physics - Section B: Particle Physics, Field Theory and Statistical Systems, Physical Mathematics, 375 (2). pp. 399-420. ISSN 0550-3213
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/055032...
Related URL: http://dx.doi.org/10.1016/0550-3213(92)90038-D
Abstract
Starting from the Liouville null-vectors in theories of c < 1 matter coupled to 2D gravity, we describe a procedure to explicitly construct elements of the BRS cohomology of ghost number ± 1. A crucial step in the analysis concerns the existence of null-states in the Liouville Fock module, for which a general criterion is obtained. The physical states are shown to satisfy a set of "descent equations", and we compute their two-point function on the sphere. Our results are illustrated by a number of examples.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 20881 |
| Deposited On: | 20 Nov 2010 13:24 |
| Last Modified: | 03 Mar 2011 05:45 |
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