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arXiv · 1309.4593

Overlaps between eigenstates of the XXZ spin-1/2 chain and a class of simple product states

B. Pozsgay
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Abstract

We consider a class of quantum quenches in the spin-1/2 XXZ chain, where the initial state is of a simple product form. Specific examples are the Néel state, the dimer state and the q-deformed dimer state. We compute determinant formulas for finite volume overlaps between the initial state and arbitrary eigenstates of the spin chain Hamiltonian. These results could serve as a basis for calculating the time dependence of correlation functions following the quantum quench.

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B. Pozsgay. 2014-05-20. Overlaps between eigenstates of the XXZ spin-1/2 chain and a class of simple product states. https://doi.org/10.1088/1742-5468%2F2014%2F06%2Fp06011

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