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Eccentric extreme mass-ratio inspirals: A gateway to probe quantum gravity effects

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arxiv 2409.17765 v2 pith:NG2U3IMA submitted 2024-09-26 gr-qc astro-ph.HEhep-th

Tieguang Zi , Shailesh Kumar This is my paper · ORCID
classification gr-qcastro-ph.HEhep-th
keywords blackholeorbitaleccentricemriextremegravitylisa
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We examine a loop quantum gravity (LQG) inspired rotating black hole, treating it as a central supermassive black hole (SMBH) in an extreme mass-ratio inspiral (EMRI) system, where an inspiralling object exhibits eccentric motion around the SMBH. With the orbital dynamics, we derive analytical expressions for the rate of change of orbital energy and angular momentum, as well as orbital evolution, and subsequently generate the gravitational waveforms. To evaluate the difference between EMRI waveforms emitted from the Kerr black hole and a spinning black hole in LQG, we compute the dephasing and mismatch using the Laser Interferometer Space Antenna (LISA) observation. Our result indicates that LISA can distinguish the modified effect of LQG with a parameter as small as $2\times10^{-6}$. The constraint on a parameter in LQG using the Fisher information matrix can be obtained within a fraction error of $10^{-6}$.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Eccentricity-Modulated Phase Degeneracy and Distinguishability between Dark Matter and Accretion Disk Environmental Effects in EMRIs

    gr-qc 2026-07 conditional novelty 5.5 of 10

    DM dephasing in EMRIs is nearly eccentricity-independent while disk dephasing is strongly suppressed by e0, so residual SNR and distinguishability time favor slightly eccentric orbits for LISA separation of the two effects.

  2. Probing near-zone magnetic fields with extreme mass-ratio inspirals

    gr-qc 2026-07 conditional novelty 5.0 of 10

    A magnetized Schwarzschild background shifts EMRI orbital dynamics and GW waveforms, with B~10^9 G producing ~1.3 rad dephasing over one year for a 10^6 M_sun system.

  3. Extreme mass-ratio inspirals and extra dimensions: Insights from modified Teukolsky framework

    gr-qc 2025-07 conditional novelty 5.0 of 10

    A modified Teukolsky equation and the Dudley-Finley approximation give nearly the same LISA detectability bound for the braneworld tidal charge, with MTE mismatches growing faster for high-eccentricity EMRIs.

  4. Shadow constraints of charged black hole with scalar hair and gravitational waves from extreme mass ratio inspirals

    gr-qc 2025-06 conditional novelty 5.0 of 10

    EHT shadow data constrain the EMCS black hole charge and scalar hair to about 0.1 and 0.01 levels, while LISA EMRI waveforms could reach 0.01 and 0.0001 levels.

  5. Massive particles tunneling from quantum Oppenheimer-Snyder black holes and black hole entropy

    gr-qc 2025-02 conditional novelty 4.0 of 10

    Massive scalar particle tunneling from the quantum Oppenheimer-Snyder black hole yields an emission rate and entropy formula with a logarithmic correction from loop quantum gravity, extending prior massless results.

  6. Black hole tunneling in loop quantum gravity

    gr-qc 2024-11 reject novelty 4.0 of 10

    Using the Parikh-Wilczek tunneling method on a loop-quantum-gravity-corrected Schwarzschild metric, the paper derives a logarithmic correction to black hole entropy, but the correction coefficient conflicts with the m...

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