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Prog. Theor. Phys. Vol. 61 No. 1 (1979) pp. 1-10

[ Full Text PDF : FREE ACCESS (676K) ]

Collective Modes and Response Functions for the BGD Model

Yoshikazu Suzumura

Department of Physics, Tohoku University, Sendai 980

(Received April 8, 1978)

Abstract:

The method of the self-consistent harmonic approximation is applied to the BGD model expressed by the phase Hamiltonian, which is derived by Luther et al. An excitation gap is obtained in case -2<g1||/(πvF)<0, where the quantity g1|| denotes the interaction of the backward scattering part of parallel spin. In this case, response functions of both CDW and TS are divergent as T→0. Results are compared with other work.


URL : http://ptp.ipap.jp/link?PTP/61/1/
DOI : 10.1143/PTP.61.1

[ Full Text PDF : FREE ACCESS (676K) ] Citation:

References:

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  26. Progress of Theoretical Physics Vol. 64 No. 2 (1980) pp. 406-418 :
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  27. Progress of Theoretical Physics Vol. 65 No. 3 (1981) pp. 1077-1080 :
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  28. Progress of Theoretical Physics Vol. 66 No. 1 (1981) pp. 15-32 :
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