Superstring BRST cohomology
نویسندگان
چکیده
منابع مشابه
De Rham Cohomology of the Supermanifolds and Superstring BRST Cohomology
We show that the BRST operator of Neveu-Schwarz-Ramond superstring is closely related to de Rham differential on the moduli space of decorated super-Riemann surfaces P. We develop formalism where superstring amplitudes are computed via integration of some differential forms over a section of P over the super moduli space M. We show that the result of integration does not depend on the choice of...
متن کاملLorentz Invariance of the Pure Spinor BRST Cohomology for the Superstring
In a previous paper, the BRST cohomology in the pure spinor formalism of the su-perstring was shown to coincide with the light-cone Green-Schwarz spectrum by using an SO(8) parameterization of the pure spinor. In this paper, the SO(9, 1) Lorentz generators are explicitly constructed using this SO(8) parameterization, proving the Lorentz invariance of the pure spinor BRST cohomology.
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We present a derivation of the scattering amplitude prescription for the pure spinor superstring from first principles, both in the minimal and non-minimal formulations, and show that they are equivalent. This is achieved by first coupling the worldsheet action to topological gravity and then proceeding to BRST quantize this system. Our analysis includes the introduction of constant ghosts and ...
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We study the BRST cohomology within a local conformal Lagrangian eld theory model built on a two dimensional Riemann surface with no boundary. We deal with the case of the complex structure parametrized by Beltrami di erential and the scalar matter elds. The computation of all elements of the BRST cohomology is given.
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In the framework of superfield formalism, we discuss some aspects of the cohomological features of a two (1 + 1)-dimensional free Abelian gauge theory described by a Becchi-Rouet-Stora-Tyutin (BRST) invariant Lagrangian density. We demonstrate that the conserved and nilpotent (anti-)BRSTand (anti-)co-BRST charges are the generators of translations along the Grassmannian directions of the four (...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2001
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2001/08/023