Global U(1) R-symmetry and conformal invariance of (0,2) models

Eva Silverstein, Edward Witten

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


We derive a condition under which (0,2) linear sigma models possess a "left-moving" conformal stress tensor in Q+ cohomology (i.e. which leaves invariant the "right-moving" ground states) even away from their critical points. At the classical level this enforces quasihomogeneity of the superpotential terms. The persistence of this structure at the quantum level on the worldsheet is obstructed by an anomaly unless the charges and superpotential degrees satisfy a condition which is equivalent to the condition for the cancellation of the anomaly in a particular "right-moving" U(1) R-symmetry.

Original languageEnglish (US)
Pages (from-to)307-311
Number of pages5
JournalPhysics Letters B
Issue number3-4
StatePublished - Jun 2 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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