Finite temperature expectation values of boundary operators
arXiv:0804.4096 · doi:10.1016/j.nuclphysb.2008.06.014
Abstract
A conjecture is presented for the thermal one-point function of boundary operators in integrable boundary quantum field theories in terms of form factors. It is expected to have applications in studying boundary critical phenomena and boundary flows, which are relevant in the context of condensed matter and string theory. The conjectured formula is verified by a low-temperature expansion developed using finite size techniques, which can also be used to evaluate higher point functions both in the bulk and on the boundary.
26 pages, 4 eps figures, latex2e file. v2: A formula added, some typos are corrected
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Cited by in corpus (10)
- Form factor expansion for thermal correlators
- Quantum quenches in the sinh-Gordon model: steady state and one point correlation functions
- Mean values of local operators in highly excited Bethe states
- One-point functions in massive integrable QFT with boundaries
- Spectral expansion for finite temperature two-point functions and clustering
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