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Generation of gravitational waves in dynamical Chern-Simons gravity

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arxiv 2209.10374 v1 pith:WNC4VAG6 submitted 2022-09-21 gr-qc astro-ph.CO

Zhi-Zhang Peng , Zhen-Min Zeng , Chengjie Fu , Zong-Kuan Guo This is my paper · ORCID
classification gr-qcastro-ph.CO
keywords gravitationalchern-simonsdynamicalmodelperturbationstermwavesaddition
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We investigate gravitational waves (GWs) generated in a two-field inflationary model with a non-canonical kinetic term, in which the gravitational Chern-Simons term is coupled to a heavy dynamical field. In such a model, primordial GWs experience a period of resonant amplification for some modes. In addition, isocurvature perturbations suffer from a temporary tachyonic instability due to an effective negative mass, which source curvature perturbations, resulting in large induced GWs. These two stochastic gravitational wave backgrounds correspond to different frequency bands, which are expected to be detected by future GW detectors such as SKA, LISA and Taiji.

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Cited by 3 Pith papers

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

  1. Gravitational Wave Birefringence in generalized Palatini Chern Simons

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Palatini f(R)+Chern–Simons gravity predicts amplitude and velocity birefringence in GW propagation, with the effect controlled by f_R and, under de-Sitter approximations, growing polynomially with redshift.

  2. Fixed-Time Voltage Regulation for Boost Converters via Unit-Safe Saturating Functions

    eess.SY 2025-08 unverdicted novelty 4.0 of 10

    A fixed-time feedback controller for boost converters uses a new class of saturating functions, observers, and adaptive gains to regulate output voltage within a bounded settling time under unknown load resistance.

  3. Cosmological constraints on small-scale primordial non-Gaussianity

    astro-ph.CO 2025-05 conditional novelty 4.0 of 10

    Current pulsar-timing, CMB, BAO and PBH data constrain the small-scale local f_NL to -10.0 < f_NL < 1.2 for a monochromatic primordial power spectrum, with that constraint conditional on the spectral amplitude A_zeta = 10^-2.

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