2020/07/31 by Hang Liu, Peng Liu, Yunqi Liu +2
Physics and Astronomy · #Astrophysics #Atomic and Subatomic Physics Research #Classical mechanics #Computer science #Cosmology #Cosmology and Gravitation Theories #Dark energy #Echo (communications protocol) #Energy (signal processing) #Equation of state #Imaging phantom #Omega #Optics #Phantom energy #Physics #Pulsars and Gravitational Waves Research #Quantum electrodynamics #Quantum mechanics #Wormhole #astro-ph.HE #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.103.024006
published as Phys. Rev. D 103, 024006 (2021) · 35 pages, 11 figures
arxiv created 2020/11/02 · openalex publication_date 2021/01/05 · arxiv updated 2021/01/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the time evolution of the test scalar and electromagnetic fields perturbations in configurations of phantom wormholes surrounded by dark energy with state parameter \ensuremathω<\ensuremath-1. We observe obvious signals of echoes reflecting wormholes properties and disclose the physical reasons behind such phenomena. In particular, we find that the dark energy equation of state has a clear imprint in echoes in wave perturbations. When \ensuremathω approaches the phantom divide \ensuremathω=\ensuremath-1 from below, the delay time of echoes becomes longer. The echo of gravitational wave is likely to be detected in the near future, and the signature of the dark energy equation of state in the echo spectrum can serve as a local measurement of the dark energy.