qsu FY2021 Annual Report 06

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)

Date:
11 March 2024

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).

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