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Abstract: A conjecture is presented for the thermal one-point function of boundaryoperators in integrable boundary quantum field theories in terms of formfactors. It is expected to have applications in studying boundary criticalphenomena and boundary flows, which are relevant in the context of condensedmatter and string theory. The conjectured formula is verified by alow-temperature expansion developed using finite size techniques, which canalso be used to evaluate higher point functions both in the bulk and on theboundary.



Author: G. Takacs

Source: https://arxiv.org/



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