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• W1966352621 abstract "We study the Heisenberg chain with frustration and alternation which is expressed by , both analytically and numerically. We focus on the case, where there is no marginal operator which brings about the logarithmic corrections in various quantities. By using the bosonization method, we calculate the energy gap, the change in the ground-state energy due to the alternation (so-called energy gain), the spin correlation and the string correlation (not only their exponents but also their amplitudes), and compare them with the results of the numerical diagonalization for finite systems. We point out the existence of the logarithmic correction in the energy gain despite the absence of the marginal operator. Taking into account this logarithmic correction, we can obtain a reasonable hyperscaling relation between the critical exponents of the energy gap and an energy gain from the numerical data." @default.
• W1966352621 created "2016-06-24" @default.
• W1966352621 creator A5051641380 @default.
• W1966352621 creator A5058005038 @default.
• W1966352621 date "1997-09-21" @default.
• W1966352621 modified "2023-09-23" @default.
• W1966352621 title "Critical properties of the spin- Heisenberg chain with frustration and bond alternation" @default.
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• W1966352621 doi "https://doi.org/10.1088/0305-4470/30/18/012" @default.
• W1966352621 hasPublicationYear "1997" @default.
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