Non-Hermitian gravitational wave scattering

Pekduran B., SARISAMAN M., AYDINER E.

Annals of Physics, vol.480, 2025 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 480
  • Publication Date: 2025
  • Doi Number: 10.1016/j.aop.2025.170109
  • Journal Name: Annals of Physics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC, zbMATH
  • Keywords: Gravitational wave, Hubble constant, Non-Hermitian physics, Scattering theory, Spectral singularity, Transfer matrix
  • Istanbul University Affiliated: Yes

Abstract

In this study, the non-Hermitian scattering of gravitational waves is examined, and their behavior at spectral singularities is discussed. We investigate the non-Hermitian properties of gravitational waves through the construction of a transfer matrix. By examining spectral singularity points obtained from the transfer matrix, we explore the behavior of gravitational waves at these spectral singularity points and compare the theoretical results with observed measurements. Our findings demonstrate that the frequency values of gravitational waves measured on Earth at spectral singularity points exhibit perfect agreement with the corresponding Hubble constant values. This alignment underscores the significance of the non-Hermitian characteristics of gravitational waves. We anticipate that this research will contribute to a deeper understanding of the role of non-Hermitian phenomena in gravitational physics and provide a foundation for future studies in the field.