An Analog of the Feigin-Frenkel homomorphism for double loop algebras

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Abstract

We prove the existence of a homomorphism of vertex algebras, from the vacuum Verma module over the loop algebra of an untwisted affine algebra, whose construction is analogous to that of the Feigin-Frenkel homomorphism from the vacuum Verma module at critical level over an affine algebra.
Original languageEnglish
Number of pages1
JournalJournal of Algebra
Volume558
DOIs
Publication statusPublished - 15 Dec 2021

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