Momentum autocorrelation function of a classic diatomic chain
作者： Ming B. Yu
DOI: 10.1016/J.PHYSLETA.2016.08.042
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摘要: Abstract A classical harmonic diatomic chain is studied using the recurrence relations method. The momentum autocorrelation function results from contributions of acoustic and optical branches. By use convolution theorem, analytical expressions for are derived as even-order Bessel expansions with coefficients given in terms integrals elliptic functions real axis a contour parallel to imaginary axis, respectively.
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