Complex plane method for interaction-induced spectra in 3D systems
✍ Scribed by W. Gļaz; J. Yang; J.D. Poll; C.G. Gray
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 488 KB
- Volume
- 218
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
In previous work by Yang et al. a method of overcoming the large phase cancellation problem in calculating far wing offdiagonal matrix elements is discussed. The method based on solving the Schriidinger equation along a contour in the complex plane has proven to be useful for one-dimensional systems. In our present work we extend the technique to the case of threedimensional systems. We show how the method improves accuracy of the matrix element calculations by reducing rapid oscillations of the integrand.
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