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Singlet Couplings and (0,2) Models | | Jacques Distler
; Shamit Kachru
; | | Date: |
14 Jun 1994 | | Journal: | Nucl.Phys. B430 (1994) 13-30 | | Abstract: | We use the quantum symmetries present in string compactification on Landau-Ginzburg orbifolds to prove the existence of a large class of exactly marginal (0,2) deformations of (2,2) superconformal theories. Analogous methods apply to the more general (0,2) models introduced in DK, lending further credence to the fact that the corresponding LG models represent bona-fide (0,2) SCFTs. We also use the large symmetry groups which arise when the worldsheet superpotential is turned off to constrain the dependence of certain correlation functions on the untwisted moduli. This allows us to approach the problem of what happens when one tries to deform away from the LG point. In particular, we find that the masses and three-point couplings of the massless $E_{6}$ singlets related to ${
m H^{1}}(ET)$ vanish at all points in the quintic Ka moduli space. Putting these results together, and invoking some plausible dynamical assumptions about the corresponding linear sm s, we show that one can deform these LG theories to arbitrary values of the Ka moduli. | | Source: | arXiv, hep-th/9406090 | | Services: | Forum | Review | PDF | Favorites | |
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