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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Published in Russian in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 103, No. 12, pp. 866–871.
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Gorbatsevich, A.A., Shubin, N.M. PT-symmetry breaking in resonant tunneling heterostructures. Jetp Lett. 103, 769–773 (2016). https://doi.org/10.1134/S0021364016120031
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DOI: https://doi.org/10.1134/S0021364016120031