Journal Article

PUBDB-2026-00407

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Laboratory frame representation of time-dependent gravitational waveforms

Fischer, L. (Corresponding author) ; Krokotsch, T. ; Moortgat-Pick, G.DESY*

2025
American Physical Society Ridge, NY

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Please use a persistent id in citations: doi:10.1103/h3nh-3hxg  doi:10.3204/PUBDB-2026-00407

Report No.: DESY-25-090; arXiv:2506.20198

Abstract: Next-generation gravitational wave (GW) experiments will explore higher frequencies where wavelengths become comparable to the dimensions of the detector. In this regime, GWs may be detected not only through mechanical deformations from tidal forces, but also via induced effective currents in electromagnetic background fields. However, the calculation of these signals often requires transforming the GW metric to all orders into the laboratory frame of the detector. Here, we derive a closed-form expression for the metric transformation of general chirplike waveforms expressed in terms of the transverse-traceless GW metric components, their integral, and their derivative. For more complex signals, where analytical integration is impractical, we provide an efficient approximation based on Taylor expansions of the retarded time to coalescence. We find that quasi-Newtonian chirp signals can be accurately transformed using a monochromatic approximation, while also demonstrating that more complex waveforms require the general transformation, which we derive. Thus, the calculated transformations provide essential tools for designing high-frequency GW experiments and analyzing signals from compact object mergers at mega- to gigahertz frequencies.

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Contributing Institute(s):

1. Technol. zukünft. Teilchenph. Experim. (FTX)

Research Program(s):

1. DFG project G:(GEPRIS)390833306 - EXC 2121: Das Quantisierte Universum II (390833306) (390833306)
2. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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