13/02/17 07:40:42.60
>>402
英語版では米沢が二つ出てくるが、日本語版では出てこない。はて？
URLﾘﾝｸ(en.wikipedia.org)
The coherent potential approximation (or CPA) is a method, in physics, of finding the Green's function of an effective medium. It is a useful concept in understanding how sound waves scatter in a material which displays spatial inhomogeneity.
One version of the CPA is an extension to random materials of the muffin-tin approximation, used to calculate electronic band structure in solids.
References
^ Yukinobu Kumashiro (2000). Electric Refractory Materials. CRC Press. p. 122. ISBN 0-8247-0049-X.
Further reading
Fumiko Yonezawa and Kazuo Morigaki (1973). "Coherent Potential Approximation: Basic Concepts and Applications". Progress of Theoretical Physics Supplement 53: 1?76. Bibcode 1973PThPS..53....1Y. doi:10.1143/PTPS.53.1.
John R. Klauder (1961). "The modification of electron energy levels by impurity atoms". Annals of Physics 14: 43?76. Bibcode 1961AnPhy..14...43K. doi:10.1016/0003-4916(61)90051-3.
URLﾘﾝｸ(ja.wikipedia.org)
コヒーレントポテンシャル近似（コヒーレントポテンシャルきんじ、Coherent Potential Approximation、CPA） は1967年に P. Soven[1]が考案したバンド計算手法のことである。
参考文献 [編集]
[1] P. Soven, Phys. Rev. 156 (1967) 809.
[2] H. Ehrenreich and L. M. Schwartz, in Solid State Physics, edited by H. Ehrenreich, F. Seitz, and D. Turnbull (Academic, New York, 1976), Vol. 31, p. 149