Crossover between High and Low Energy-States in Two-Coupled Chains of Tomonaga Model | Zendy

Masahisa Tsuchiizu | Zendy; Hideo Yoshioka | Zendy; Yoshikazu Suzumura | Zendy

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Crossover between High and Low Energy-States in Two-Coupled Chains of Tomonaga Model

Author(s) -

Masahisa Tsuchiizu,

Hideo Yoshioka,

Yoshikazu Suzumura

Publication year - 1997

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.98.1045

Subject(s) - physics , crossover , condensed matter physics , superconductivity , phase diagram , plane (geometry) , renormalization group , charge (physics) , energy (signal processing) , phase (matter) , quantum mechanics , geometry , mathematics , artificial intelligence , computer science

By applying the renormalization group method to two-coupled chains in theTomonaga model, the role of interchain hopping has been studied in the entireenergy region. The energy for a crossover from the perturbational regime to therelevant regime becomes smaller than that of the interchain hopping due toone-dimensional fluctuations of the mutual interaction. From the calculation ofresponse functions for charge density waves and superconducting states, thephase diagram of dominant and subdominant states has been obtained in the planeof mutual interactions with fixed energy.Comment: 18 pages, 9 figures, to be published in Prog. Theor. Phys. 98 (1997) No.

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