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PT-symmetry breaking in resonant tunneling heterostructures

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.

preprint2016arXivOpen access
A. A. GorbatsevichN. M. Shubin
cond-mat.mes-hallcond-mat.other
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A. A. GorbatsevichN. M. Shubin

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