Multiply Degenerate Exceptional Points and Quantum Phase Transitions

  title={Multiply Degenerate Exceptional Points and Quantum Phase Transitions},
  author={D. Borisov and Frantisek Ruzicka and M. Znojil},
  journal={International Journal of Theoretical Physics},
  • D. Borisov, Frantisek Ruzicka, M. Znojil
  • Published 2015
  • Physics, Mathematics
  • International Journal of Theoretical Physics
  • The realization of a genuine phase transition in quantum mechanics requires that at least one of the Kato’s exceptional-point parameters becomes real. A new family of finite-dimensional and time-parametrized quantum-lattice models with such a property is proposed and studied. All of them exhibit, at a real exceptional-point time t = 0, the Jordan-block spectral degeneracy structure of some of their observables sampled by Hamiltonian H(t) and site-position Q(t). The passes through the critical… CONTINUE READING

    Figures from this paper.


    Publications referenced by this paper.