A Trinomial Analogue of Bailey's Lemma and N = 2 Superconformal Invariance

Abstract:We propose and prove a trinomial version of the celebrated Bailey's lemma. As an application we obtain new fermionic representations for characters of some unitary as well as nonunitary models of N= 2 superconformal field theory (SCFT). We also establish interesting relations between N= 1 and N= 2 models of SCFT with central charges and . A number of new mock theta function identities are derived. Dedicated to Dora Bitman on her 70th birthday