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Generalized Petermann factor of non-Hermitian systems at exceptional points

Julius Kullig and Jan Wiersig*

Henning Schomerus†

  • Institut für Physik, Otto-von-Guericke-Universität Magdeburg, Postfach 4120, D-39016 Magdeburg, Germany

  • *Contact author: jan.wiersig@ovgu.de
  • †Contact author: h.schomerus@lancaster.ac.uk

Spectroscopic signatures of a Liouvillian exceptional spectral phase in a collective spin

Rafael A. Molina

SciPost Phys. Core 9 045 (2026)

Fundamental limits of non-Hermitian sensing from quantum Fisher information

Jan Wiersig and Stefan Rotter

Rep. Prog. Phys. 89 067501 (2026)

Latent-Geometry Correspondence: Unraveling Hidden Symmetry Groups with Graph Theory

Xinyu Zhang, Ruotao Ye, Malte Röntgen, Menglin L. N. Chen, Su-Huai Wei, Shuang Zhang, and Wenlong Gao

Phys. Rev. Lett. 137 056602 (2026)

Non-Hermitian Su-Schrieffer-Heeger model with the energy levels of free parafermions

Edward McCann

Phys. Rev. B 113 045403 (2026)

Real critical exponents from the ε -expansion in an interacting U(1) model with non-Hermitian Z4 anisotropy

Eduard Naichuk, Jeroen van den Brink, and Flavio S. Nogueira

Phys. Rev. B 113 115157 (2026)

Approaches to Exceptional Points in the Framework of Non-Hermitian Random Matrices

Henri Benisty

Entropy 28 149 (2026)

Slow–fast nonlinear dynamics and non-normal relaxation pulses near exceptional points in an autonomous Kerr dimer

Hanin Ardah, Sara A. Ghorashi, R.T. Matoog, and Gamal M. Ismail

Chaos, Solitons & Fractals 213 119113 (2026)

Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities: Implementation, Signal Enhancement, and Topology

Jan Wingenbach, Laura Ares, Xuekai Ma, Nai H. Kwong, Jan Sperling, Rolf Binder, and Stefan Schumacher

ACS Photonics 13 3238 (2026)

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