Matches in SemOpenAlex for { <https://semopenalex.org/work/W2086119025> ?p ?o ?g. }
- W2086119025 abstract "We investigate the effect of the marginal operator on the critical exponents of the one-dimensional S=1/2 Heisenberg model, using the relation between the critical exponents and the energy gaps of the finite system. The energy gaps behave as ensuremath{Delta}Eensuremath{propto}1/L with the logarithmic corrections from the marginally irrelevant operator. The numerical results obtained with the Bethe ansatz are well explained by the two-loop renormalization of the marginal coupling. Thus the discrepancies between the one-loop renormalization prediction and numerical results are resolved, though it is found that the nonuniversal constant of the logarithmic correction in the ground state does not agree with the asymptotic expansion of the Bethe ansatz." @default.
- W2086119025 created "2016-06-24" @default.
- W2086119025 creator A5004167500 @default.
- W2086119025 date "1993-12-01" @default.
- W2086119025 modified "2023-09-25" @default.
- W2086119025 title "Logarithmic corrections of the one-dimensionalS=1/2 Heisenberg antiferromagnet" @default.
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- W2086119025 doi "https://doi.org/10.1103/physrevb.48.16814" @default.
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