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Exact Solution for a Chain of Coupled Oscillators with Two Types of Atom |
LIU Ke-Jia1,3;LU Huai-Xin2,3;ZHANG Yong-De3 |
1Department of Metallurgy, Guizhou University of Technology, Guiyang 550003
2Department of Physics, Changwei Teachers College, Weifang 261043
3Department of Modern Physics, University of Science and Technology of China, Hefei 230026
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Cite this article: |
LIU Ke-Jia, LU Huai-Xin, ZHANG Yong-De 2000 Chin. Phys. Lett. 17 241-242 |
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Abstract A quantum transformation that can diagonalize the Hamiltonian of a ring of N coupled diatomic oscillators is found. By means of the transformation, the dispersion relation of the atomic system is obtained. For large N it turns out that the dispersion relation resembles to the phonon spectrum of the lattice vibration derived by Newton's equation of motion.
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Keywords:
03.65.-w
63.10.+a
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Published: 01 April 2000
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