ON THE BRST APPROACH TO TWO-DIMENSIONAL GRAVITY IN THE LIGHT-CONE GAUGE
1991 ◽
Vol 06
(26)
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pp. 4639-4654
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Keyword(s):
The BRST approach to two-dimensional gravity coupled to conformal field theories is discussed. The ordinary BRST symmetry acts only on the left-moving sector of the theory. It is found that there exists a BRST-like symmetry also in the right-moving sector. The conserved charge of this new symmetry is found to be nilpotent. This symmetry is a result of a redundancy of the parametrization of the gravitational field in terms of a scalar field. We propose that the physical states of the theory should belong to the cohomology of this BRST-like charge to eliminate the redundancy. It is also discussed how to derive the BRST charge from the action and the transformation laws of fields.
1991 ◽
Vol 06
(14)
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pp. 1261-1268
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Keyword(s):
1991 ◽
Vol 06
(13)
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pp. 2331-2346
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2001 ◽
Vol 16
(12)
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pp. 2165-2173
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Keyword(s):
2000 ◽
Vol 15
(03)
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pp. 413-428
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Keyword(s):
2013 ◽
Vol 28
(32)
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pp. 1350168
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Keyword(s):
2016 ◽
Vol 31
(32)
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pp. 1650170
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