N=4 TOPOLOGICAL STRINGS

被引:209
作者
BERKOVITS, N [1 ]
VAFA, C [1 ]
机构
[1] HARVARD UNIV,LYMAN LAB PHYS,CAMBRIDGE,MA 02138
关键词
D O I
10.1016/0550-3213(94)00419-F
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We show how to make a topological string theory starting from an N = 4 superconformal theory. The critical dimension for this theory is c ($) over cap = 2 (c = 6). It is shown that superstrings (in both the RNS and GS formulations) and critical N = 2 strings are special cases of this topological theory. Applications for this new topological theory include: (1) Proving the vanishing to all orders of all scattering amplitudes for the self-dual N = 2 string with flat background, with the exception of the three-point function and the closed-string partition function; (2) Showing that the topological partition function of the N = 2 string on the K3 background may be interpreted as computing the superpotential in harmonic superspace generated upon compactification of type II superstrings from 10 to 6 dimensions; and (3) Providing a new prescription for calculating superstring amplitudes which appears to be free of total-derivative ambiguities.
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页码:123 / 180
页数:58
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