On marginal deformations of (0,2) non-linear sigma models

Melnikov, Ilarion V.; Sharpe, Eric

doi:10.1016/j.physletb.2011.10.055

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On marginal deformations of (0,2) non-linear sigma models

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Melnikov, Ilarion V.
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1110.1886
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Melnikov, I. V., & Sharpe, E. (2011). On marginal deformations of (0,2) non-linear sigma models. Physics Letters B, 705(5), 529-534. doi:10.1016/j.physletb.2011.10.055.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-30EF-3

Abstract

An N=1, d=4 supersymmetric compactification of the perturbative heterotic string is described by a d=2 (0,2) superconformal field theory. The first-order marginal deformations of the internal (0,2) SCFT are in 1 to 1 correspondence with massless gauge-neutral scalars in the spacetime theory. Working at tree-level in the alpha' expansion, we describe these first order deformations for SCFTs with a (0,2) non-linear sigma model description. Our results clarify the structure of deformations of heterotic Calabi-Yau compactifications and more general heterotic flux vacua.