On the Brst Operator Structure of the N = 2 String
نویسنده
چکیده
The BRST operator cohomology of N = 2 2d supergravity coupled to matter is presented. Descent equations for primary su-perfields of the matter sector are derived. We find one copy of the cohomology at ghost number one, two independent copies at ghost number two, and conjecture that there is a copy at ghost number three. The N = 2 string has a twisted N = 4 super-conformal symmetry generated by the N = 2 superstress tensor, the BRST supercurrent, the antighost superfield, and the ghost number supercurrent.
منابع مشابه
BRST operator for the large N=4 superconformal algebra.
We review the detailed structure of the large N = 4 superconformal algebra, and construct its BRST operator which constitutes the main object for analyzing N = 4 strings. We then derive the general condition for the nilpotency of the BRST operator and show that there exists a line of critical N = 4 string theories. e-mail address: [email protected] e-mail address: [email protected], ohta@...
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