Three Solvable Matrix Models of a Quantum Catastrophe
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- Lévai, G., Růžička, F. & Znojil, M. Int J Theor Phys (2014) 53: 2875. doi:10.1007/s10773-014-2085-x
Three classes of finite-dimensional models of quantum systems exhibiting spectral degeneracies called quantum catastrophes are described in detail. Computer-assisted symbolic manipulation techniques are shown unexpectedly efficient for the purpose.