On the asymptotic Green's function in an n-dimensional lattice model

Mathews, P. M. ; Seshadri, M. s. (1965) On the asymptotic Green's function in an n-dimensional lattice model Progress of Theoretical Physics, 34 (4). pp. 534-538. ISSN 0033-068X

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Official URL: http://ptp.ipap.jp/link?PTP/34/534/

Related URL: http://dx.doi.org/10.1143/PTP.34.534

Abstract

The asymptotic form of the Green's function representing the effect of a point imperfection (isotopic impurity) in an n-dimensional lattice is obtained by the use of a multiple saddle-point method. It is shown to be an improvement over an earlier evaluation, in the case of localized vibrational modes with frequency not too close to the largest band frequency of the lattice.

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ID Code:81164
Deposited On:04 Feb 2012 16:53
Last Modified:04 Feb 2012 16:53

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