104 citations · 794 across the 40 of their papers we have counts for
5 papers · 1 filter
Level spectroscopy II - application to the Gaussian model -
Kiyohide Nomura, Atsuhiro Kitazawa
It was a difficult problem to determine the Gaussian fixed line from the numerical data, because close to the Berezinskii-Kosterlitz-Thouless multicritical point the divergence of…
The end of c=1 CFT
Kiyohide Nomura
Conformal field theory (CFT) with the central charge c=1 is important both in the field theory and in the condensed matter physics, since it has the continuous internal symmetry (U…
Phase Diagram of Bond-Alternating XXZ chains
Atsuhiro Kitazawa, Kiyohide Nomura, Kiyomi Okamoto
The phase transitions between the XY, the dimer and the Haldane phases of the spin-1 bond-alternating XXZ chain are studied by the numerical diagonalization. We determine the phase…
Critical Properties of the XXZ chain in External Staggered Magnetic Field
Kiyomi Okamoto, Kiyohide Nomura
We comment on the recent work of Alcaraz and Malvezzi [1995 {\it J. Phys. A: Math. Gen.} {\bf 19} 1521] for the critical properties of the chain in staggered magnetic…
Correlation functions of the 2D sine-Gordon model
Kiyohide Nomura
A number of two-dimensional(2D) critical phenomena can be described in terms of the 2D sine-Gordon model. With the bosonization, several 1D quantum systems are also transformed to…