Local topology and universal unfolding of the energy surfaces at a crossing of unbound states
We show that when an isolated doublet of unbound states of a physical system becomes degenerate, the eigenenergy surfaces have an algebraic branch point of rank one and branch cuts in its real and imaginary parts starting at the same exceptional point but extending in opposite directions in paramete...
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| Vydáno v: | Revista Mexicana de Física |
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| Hlavní autoři: | , , , |
| Médium: | Artigo |
| Jazyk: | Inglês |
| Vydáno: |
Sociedad Mexicana de Física A.C.
2006
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| Témata: | |
| On-line přístup: | https://www.redalyc.org/articulo.oa?id=57016045018 |
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