Spectra density of a random chain of oscillators: Cellular coherent-potential approximation calculations
The cellular coherent-potential approximation (CCPA) is applied to the calculation of the spectral density of the one-dimensional random chain of oscillators. Although the CCPA introduces an artificial periodicity on the on-the-average homogeneous chain, this does not appear to affect the results, w...
Guardado en:
| Publicado: |
1978
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v18_n8_p3976_Hirsch http://hdl.handle.net/20.500.12110/paper_01631829_v18_n8_p3976_Hirsch |
| Aporte de: |
| Sumario: | The cellular coherent-potential approximation (CCPA) is applied to the calculation of the spectral density of the one-dimensional random chain of oscillators. Although the CCPA introduces an artificial periodicity on the on-the-average homogeneous chain, this does not appear to affect the results, which are found to agree very well with Monte Carlo calculations, when a sufficiently large cluster is taken. © 1978 The American Physical Society. |
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