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Boundary overlap in the open XXZ spin chain
Published 23 Sep 2024 in math-ph, cond-mat.stat-mech, hep-th, math.MP, and nlin.SI | (2409.15194v3)
Abstract: In this paper we compute the overlaps of the ground states for the open spin chains after a change of one of the boundary magnetic fields. It can be considered as the first step toward the study of the boundary quench problem: behaviour of an open spin chain after an abrupt change of one boundary magnetic field.
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