Abstract
The asymptotic dynamical correlation functions in one-dimensional spin chains are described by power laws. The corresponding exponents characterize different bulk and boundary critical behavior. We present results for the logarithmic contribution to the boundary correlations of an isotropic Heisenberg chain. The exponent of the logarithm, λ=1, is derived using a renormalization group technique. We confirm our analytical results by comparing with numerical quantum Monte Carlo data.
Original language | English |
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Article number | 155104 |
Journal | Physical Review B |
Volume | 106 |
Issue number | 15 |
DOIs | |
State | Published - 15 Oct 2022 |
Bibliographical note
Publisher Copyright:© 2022 American Physical Society.
Funding
We are grateful for useful discussions with J. Sirker and F. Göhmann. This work was supported by the Deutsche Forschungsgemeinschaft (DFG) via the SFB/Transregio 185, projects A4 and A5, and the Forschungsgruppe FOR 2316 Project No. P10. I.M. acknowledges the warm hospitality of TU Kaiserslautern during the calculations for this paper.
Funders | Funder number |
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Deutsche Forschungsgemeinschaft | 185 |