PT-symmetry breaking in resonant tunneling heterostructures

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.

4 pages, 2 figures

References in corpus (7)

• Making Sense of Non-Hermitian Hamiltonians
• The physics of exceptional points
• PT-symmetry breaking and laser-absorber modes in optical scattering systems
• Reversing the Pump-Dependence of a Laser at an Exceptional Point
• Topological Insulators and Nematic Phases from Spontaneous Symmetry Breaking in 2D Fermi Systems with a Quadratic Band Crossing
• Spontaneous symmetry breaking in a polariton and photon laser
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Cited by in corpus (4)

• Unified theory of resonances and bound states in the continuum in Hermitian tight-binding models
• Exceptional points of PT-symmetric reflectionless states in complex scattering systems
• Non-Hermitian noncommutative quantum mechanics
• Implementation of transmission functions for an optimized three-terminal quantum dot heat engine