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Inflation in Weyl-invariant Einstein-Cartan gravity

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arxiv 2410.16364 v2 pith:MJCSQ7F5 submitted 2024-10-21 gr-qc astro-ph.COhep-th

Inflation in Weyl-invariant Einstein-Cartan gravity

Ioannis D. Gialamas , Kyriakos Tamvakis This is my paper
classification gr-qc astro-ph.COhep-th
keywords fieldcoupledeinstein-cartangravityinflationscalarvaluesweyl-invariant
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider Weyl-invariant quadratic Einstein-Cartan gravity coupled to a scalar field and study the inflationary behaviour of the coupled system of the scalar field and the pseudoscalar associated with the Holst invariant. We find that the model is characterized by effective single-field inflation occurring at small field values and analyze its predictions which are in comfortable agreement with existing observations for a range of parameter values.

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Cited by 7 Pith papers

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

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  5. Atomic clocks and gravitational waves as probes of non-metricity

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    Adding cubic Holst-invariant terms to F(R,R̃) Einstein-Cartan inflation models systematically lowers the predicted spectral index n_s and tensor-to-scalar ratio r, restoring data compatibility in parameter regions whe...

  7. Reheating in geometric Weyl-invariant Einstein-Cartan gravity

    gr-qc 2026-01 unverdicted novelty 4.0

    Reheating temperature and equation-of-state parameter assumptions in Weyl-invariant Einstein-Cartan gravity models significantly alter predicted inflationary observables.