VERTEX OPERATORS FOR THE CLOSED BOSONIC STRING THEORY AT ARBITRARY GENUS IN THE OPERATOR FORMALISM
1990 ◽
Vol 05
(12)
◽
pp. 2391-2409
◽
Keyword(s):
A systematic procedure for constructing vertex operators for the physical states of the closed bosonic string theory at genus g in the operator formalism is presented. The method is based on imposing suitable commutation relations with the generators of the conformal transformations required by unitarity of scattering amplitudes. An Arakelov-type metric on the Riemann surface naturally arises in the case of the tachyon, which allows to define vertex operators at higher levels via covariant derivatives. They involve covariant derivatives of the curvature with respect to this metric as it happens in the path integral approach. As a particular result, the Fradkin-Tseytlin dilaton coupling is obtained.
1987 ◽
Vol 02
(05)
◽
pp. 299-306
◽
2011 ◽
Vol 50
(8)
◽
pp. 2366-2382
1995 ◽
Vol 10
(03)
◽
pp. 183-191
◽
2003 ◽
Vol 18
(07)
◽
pp. 1051-1066
◽
Keyword(s):
Keyword(s):