qsu FY2021 Annual Report 06
Figure: The loop structure of the nonlinear Bloch spectrum for defocusing (upper row) and focusing [lower row, (b2)–(b5)] interactions for different strength V0 of the non-hermitian part of the Hamiltonian . Only the highest two Bloch bands are shown. The panels in the upper and lower rows from left to right correspond to V0={0,0.8,1.6,2,3} and V0={0.4,0.8,1.6,3,3.8}, respectively. In the shaded areas in panels (a5) and (b5), the spectrum is complex, i.e., PT symmetry is broken.
Publication:
Asymmetric Loop Spectra and Unbroken Phase Protection due to Nonlinearities in
PT-Symmetric Periodic Potentials
Yongping Zhang, Zhu Chen, Biao Wu, Thomas Busch, and Vladimir V. Konotop
Phys. Rev. Lett. 127, 034101 (2021)
Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0).
