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PT Symmetry and Spontaneous Symmetry Breaking in a Microwave Billiard

Bittner, S. ; Dietz, B. ; Günther, U. ; Harney, H. L. ; Miski-Oglu, M. ; Richter, A. ; Schäfer, F. (2012)
PT Symmetry and Spontaneous Symmetry Breaking in a Microwave Billiard.
In: Physical Review Letters, 108 (2)
doi: 10.1103/PhysRevLett.108.024101
Article, Bibliographie

Item Type: Article
Erschienen: 2012
Creators: Bittner, S. ; Dietz, B. ; Günther, U. ; Harney, H. L. ; Miski-Oglu, M. ; Richter, A. ; Schäfer, F.
Type of entry: Bibliographie
Title: PT Symmetry and Spontaneous Symmetry Breaking in a Microwave Billiard
Language: English
Date: January 2012
Publisher: American Physical Society
Journal or Publication Title: Physical Review Letters
Volume of the journal: 108
Issue Number: 2
DOI: 10.1103/PhysRevLett.108.024101
URL / URN: http://link.aps.org/doi/10.1103/PhysRevLett.108.024101
Alternative Abstract:
Alternative abstract Language

We demonstrate the presence of parity-time (PT) symmetry for the non-Hermitian two-state Hamiltonian of a dissipative microwave billiard in the vicinity of an exceptional point (EP). The shape of the billiard depends on two parameters. The Hamiltonian is determined from the measured resonance spectrum on a fine grid in the parameter plane. After applying a purely imaginary diagonal shift to the Hamiltonian, its eigenvalues are either real or complex conjugate on a curve, which passes through the EP. An appropriate basis choice reveals its PT symmetry. Spontaneous symmetry breaking occurs at the EP.

English
Divisions: 05 Department of Physics
05 Department of Physics > Institute of Nuclear Physics
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > C: Fundamentale Experimente
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > C: Fundamentale Experimente > C4: Quantenchaos und wellendynamisches Chaos
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 17 Jan 2012 13:52
Last Modified: 05 Mar 2013 09:57
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