Critical Properties of Spectral Functions for the 1D Anisotropic t-J Models with an Energy Gap
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概要
- 論文の詳細を見る
We exactly calctrlate the momentttm-dependent critical exponents for spectral functions inthe one-dimensional anisotropic t-J models with a gap either in the spin or charge excitationspectruna. Otrr approach is barsed on the Bethe ansatz techniqtre cornbined xvith finite-size scalingtechniques in conformal field theory. It is found that the spectral ftrnctions show a power-lawsingtrlstrity, which occurs at freqtrencies determined by the dispersion of a massive spin (orcharge) excitation. We discuss how the nontrivial contribtrtion of a tnassive excitation controlsthe singular behavior in optical response f'trnctions.
- 社団法人日本物理学会の論文
- 1997-09-15
著者
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Fujii Tatsuya
Department Of Pediatrics Shiga Medical Center For Children
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Tsukamoto Yasumasa
Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine
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Fujii T
Department Of Applied Physics Osaka University
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KAWAKAMI Norio
Department of Applied Physics, Osaka University
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Kawakami Norio
Department Of Applied Physics Osaka University
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Fujii Takenori
Department Of Applied Physics Faculty Of Science Science University Of Tokyo:(present Address) Cryog
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Tsukamoto Y
Osaka Univ. Osaka
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Tsukamoto Yasumasa
Department Of Applied Physics Osaka University
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Fujii Tatsuya
Department Of Applied Physics Osaka University
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