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Hidden Grassmann Structure in the XXZ Model II: Creation Operators

Abstract : In this article we unveil a new structure in the space of operators of the XXZ chain. We consider the space of all quasi-local operators, which are products of the disorder field with arbitrary local operators. In analogy with CFT the disorder operator itself is considered as primary field. In our previous paper, we have introduced the annhilation operators which mutually anti-commute and kill the primary field. Here we construct the creation counterpart and prove the canonical anti-commutation relations with the annihilation operators. We show that the ground state averages of quasi-local operators created by the creation operators from the primary field are given by determinants.
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https://hal.archives-ouvertes.fr/hal-00346749
Contributor : Fedor Smirnov Connect in order to contact the contributor
Submitted on : Friday, December 12, 2008 - 11:45:54 AM
Last modification on : Monday, December 14, 2020 - 9:41:37 AM

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H. Boos, M. Jimbo, T. Miwa, F. Smirnov, Y. Takeyama. Hidden Grassmann Structure in the XXZ Model II: Creation Operators. Communications in Mathematical Physics, Springer Verlag, 2008, online first, pp.online first. ⟨10.1007/s00220-008-0617-z⟩. ⟨hal-00346749⟩

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