Discriminant indicators with generalized inversion symmetry

Tsuneya Yoshida, Ryo Okugawa, Yasuhiro Hatsugai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We propose indicators of the discriminant for systems with generalized inversion symmetry which are computed from data only at high-symmetry points in the Brillouin zone. Our approach captures the exceptional points and their symmetry-protected variants without ambiguity arising from the reference energy, which is an advantage over the previously known indicators for non-Hermitian systems. As demonstrations, we systematically analyze Formula Presented Hamiltonians where the proper choice of the reference energy is not obvious.

Original languageEnglish
Article number085109
JournalPhysical Review B
Issue number8
Publication statusPublished - 2022 Feb 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Discriminant indicators with generalized inversion symmetry'. Together they form a unique fingerprint.

Cite this