TITLE:
Gravitational Wave Radiation from the Antimatter Universe
AUTHORS:
Tharwat M. El-Sherbini
KEYWORDS:
Astrophysical Cosmology, Antimatter Universe, Gravitational Waves, Dark Energy
JOURNAL NAME:
Journal of High Energy Physics, Gravitation and Cosmology,
Vol.12 No.3,
June
30,
2026
ABSTRACT: Since the advent of gravitational wave astronomy in the second decade of this century—due to the observation of gravitational waves by LIGO detectors in 2015, there are active efforts by many astrophysicists to propose different theoretical models to explain and test this phenomenon. In this article, we study gravitational wave radiation from the previously proposed anti-matter universe. The emitted continuous-gravitational wave radiation from the compact core of the anti-universe and its relativistic rotating outer plasma layer, are considered as perturbative waves in toroidal r-mode oscillations driven by rotation and Coriolis forces. The most prominent toroidal-bulk mode for gravitational wave emission is the
l=2
,
m=2
, and its range of frequencies is approximately ≈ 135 - 632 Hz. This mode is likely detectable by LIGO or VIRGO detectors where their sensitivities are high enough in this range of frequencies. The power radiated from this mode adapted for rapidly rotating compact object (anti-universe) with compactness parameter C ≈ 0.49, is evaluated to be approximately ≈ 1.4 × 1039 W. Gravitational wave-strain amplitudes are calculated using the quadrupole formula adjusted for r-modes, estimating the distance between the antimatter universe and the observer to be of the order of magnitude of the radius of our observable universe which is approximately 46.5 billion lightyears (4.4 × 1036 m), about 0.24 × 10?29 m, after incorporating GR frame dragging (Lense Thirring effect) correction. This value is too weak for any currently operating gravitational wave detector to observe. However, the high sensitivity cryogenic LIGO/VIRGO detectors or the future planned laser interferometer space antenna (LISA), could plausibly detect the continuous emitted gravitational waves from the antimatter universe.