BKT transition and level spectroscopy

Kiyohide Nomura; Atsuhiro Kitazawa

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BKT transition and level spectroscopy

Kiyohide Nomura·Atsuhiro Kitazawa

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Abstract

Berezinskii-Kosterlitz-Thouless (BKT) transition is one of the instability mechanisms for the Tomonaga-Luttinger liquid. But in the BKT transition, there are logarithmic-correction problems, which make it very difficult to treat BKT transitions numerically. We propose a method, ``level spectroscopy'', to overcome such difficulties, based on the renormalization group analysis and the symmetry consideration.

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Kiyohide Nomura, Atsuhiro Kitazawa. 2002-01-23. BKT transition and level spectroscopy. https://arxiv.org/abs/cond-mat/0201072

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