PT-symmetry breaking in resonant tunneling heterostructures

2016/06/01 by A. A. Gorbatsevich, А. А. Горбацевич, N. M. Shubin +1 · 1 citation
Physics and Astronomy · #Quantum Mechanics and Non-Hermitian Physics #Quantum chaos and dynamical systems #Topological Materials and Phenomena

paper · doi:10.1134/s0021364016120031

Abstract

We present fermionic model based on symmetric resonant tunneling heterostructure, which demonstrates spontaneous symmetry breaking in respect to combined operations of space inversion (P) and time reversal (T). PT-symmetry breaking manifests itself in resonance coalescence (collapse of resonances). We show that resonant energies are determined by eigenvalues of auxiliary pseudo-Hermitian PT-invariant Hamiltonian.

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• Non-Hermitian Hamiltonians and Quantum Transport in Multi-Terminal Conductors. [europepmc]

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