We consider correlation functions of the form 〈vac|O|vac〉′, where |vac 〉 is the vacuum eigen-state of an infinite antiferromagnetic XXZ chain, |vac〉 ′ is the vacuum eigenstate of an infinite XXZ chain which is split in two, and O is a local operator. The Hamiltonian of the split chain has no coupling between sites 1 and 0 and has a staggered magnetic field at these two sites; it arises from a tensor product of left and right boundary transfer matrices. We find a simple, exact expression for 〈vac|vac〉 ′ and an exact integral expression for general 〈vac|O|vac〉 ′ using the vertex operator approach. We compute the integral when O = σz1 and find a conjectural expression that is analogous to the known formula for the XXZ spontaneous magnetisation...
We consider quantum correlation functions of the antiferromagnetic spin-1/2 Heisenberg XXZ spin chai...
24 pagesInternational audienceWe obtain a new multiple integral representation for the spin-spin cor...
Vol. 19, No. supp02 (May 2004) SUPPLEMENT ISSUE Proceedings of the 6th International Workshop on Con...
In this paper we continue our derivation of the correlation functions of open quantum spin 1/2 chain...
28 pagesThis paper is a continuation of [1], in which a set of matrix elements of local operators wa...
International audienceIn this paper we continue our derivation of the correlation functions of open ...
44 pagesInternational audienceWe consider the XXZ spin chain with diagonal boundary conditions in th...
An explicit construction for Q-operators of the finite XXZ spin chain with twisted boundary conditio...
Correlation functions and form factors in vertex models or spin chains are known to satisfy certain ...
We consider multi-point correlation functions in the open XXZ chain with longitudinal boundary field...
38 pagesInternational audienceWe derive compact multiple integral formulas for several physical spin...
48 pagesIn this first paper, we start the analysis of correlation functions of quantum spin chains w...
AbstractThe half-infinite XXZ spin chain with a triangular boundary is considered in the massive reg...
International audienceWe explain how to compute correlation functions at zero temperature within the...
We consider quantum correlation functions of the antiferromagnetic spin-1/2 Heisenberg XXZ spin chai...
24 pagesInternational audienceWe obtain a new multiple integral representation for the spin-spin cor...
Vol. 19, No. supp02 (May 2004) SUPPLEMENT ISSUE Proceedings of the 6th International Workshop on Con...
In this paper we continue our derivation of the correlation functions of open quantum spin 1/2 chain...
28 pagesThis paper is a continuation of [1], in which a set of matrix elements of local operators wa...
International audienceIn this paper we continue our derivation of the correlation functions of open ...
44 pagesInternational audienceWe consider the XXZ spin chain with diagonal boundary conditions in th...
An explicit construction for Q-operators of the finite XXZ spin chain with twisted boundary conditio...
Correlation functions and form factors in vertex models or spin chains are known to satisfy certain ...
We consider multi-point correlation functions in the open XXZ chain with longitudinal boundary field...
38 pagesInternational audienceWe derive compact multiple integral formulas for several physical spin...
48 pagesIn this first paper, we start the analysis of correlation functions of quantum spin chains w...
AbstractThe half-infinite XXZ spin chain with a triangular boundary is considered in the massive reg...
International audienceWe explain how to compute correlation functions at zero temperature within the...
We consider quantum correlation functions of the antiferromagnetic spin-1/2 Heisenberg XXZ spin chai...
24 pagesInternational audienceWe obtain a new multiple integral representation for the spin-spin cor...
Vol. 19, No. supp02 (May 2004) SUPPLEMENT ISSUE Proceedings of the 6th International Workshop on Con...