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Scalar induced gravitational waves in metric teleparallel gravity with the Nieh-Yan term

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arxiv 2404.02922 v2 pith:LUSY7CDO submitted 2024-03-29 gr-qc

Fengge Zhang , Jia-Xi Feng , Xian Gao This is my paper
classification gr-qc
keywords metricgravityteleparallelsigwstermscalardensityenergy
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We investigate the scalar induced gravitational waves (SIGWs) in metric teleparallel gravity with the Nieh-Yan (NY) term, which results in parity violation during the radiation-dominated era. By solving the equations of motion of linear scalar perturbations from both the metric and the tetrad fields, we obtain the corresponding analytic expressions. Then, we calculate the SIGWs in metric teleparallel gravity with the NY term and evaluate the energy density of SIGWs with a monochromatic power spectrum numerically. We find that the spectrum of the energy density of SIGWs in metric teleparallel gravity with the NY term is significantly different from that in general relativity (GR), which makes metric teleparallel gravity distinguishable from GR.

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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. Parity-violating spatially covariant gravity at total derivative order $d=5$

    gr-qc 2026-07 conditional novelty 6.0 of 10

    At total derivative order five, parity-violating spatially covariant gravity has exactly 59 independent monomials, and their tensor-perturbation response is controlled by four coefficient combinations producing helici...

  2. Circularly polarized gravitational waves from parity-violating scalar-tensor theory

    gr-qc 2026-02 conditional novelty 6.0 of 10

    In the "Qi-Xiu" parity-violating scalar-tensor theory, the L3 and L4 interactions leave linear gravitational-wave propagation GR-like but still generate circularly polarized scalar-induced gravitational waves.

  3. Twisted echoes of an odd quartet: Scalar-induced gravitational waves as a probe of primordial parity-violation

    astro-ph.CO 2025-07 conditional novelty 6.0 of 10

    A parity-odd primordial trispectrum imprints measurable left-right asymmetry in scalar-induced gravitational waves, and the chirality ratio directly tracks the parity-odd to parity-even trispectrum amplitude ratio.

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