| Item Type: |
Article
|
| Erschienen: |
2012 |
| Creators: |
Bittner, S. and Dietz, B. and Günther, U. and Harney, H. L. and Miski-Oglu, M. and Richter, A. and Schäfer, F. |
| Title: |
PT Symmetry and Spontaneous Symmetry Breaking in a Microwave Billiard |
| Language: |
English |
| Journal or Publication Title: |
Physical Review Letters |
| Volume: |
108 |
| Number: |
2 |
| Publisher: |
American Physical Society |
| 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 |
| Official URL: |
http://link.aps.org/doi/10.1103/PhysRevLett.108.024101 |
| Identification Number: |
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 |
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