A simple approach to the Landau–Zener formula
✍ Scribed by Vutha, Amar C
- Book ID
- 120983782
- Publisher
- Institute of Physics
- Year
- 2010
- Tongue
- English
- Weight
- 228 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0143-0807
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📜 SIMILAR VOLUMES
## Abstract We study semi‐classical measures of families of solutions to a 2 × 2 Dirac system with 0 mass, which presents bands crossing. We focus on constant electro‐magnetic fields. The fact that these fields are orthogonal or not leads to different geometric situations. In the first case, one re
The Landau-Zener level-crossing problem is analysed perturbatively. We consider the operator \(H(t)=\Phi(t) \sigma^{3}+\Delta \sigma^{1}\), where \(\Phi(t)\) is an external (time-dependent) force, \(\sigma^{i}\) are the Pauli matrices, and \(\Delta\) is taken to be a small parameter. By considering