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Einstein-Cartan pseudoscalaron inflation

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arxiv 2309.11345 v2 pith:VHIQML5E submitted 2023-09-20 hep-th astro-ph.COgr-qc

Einstein-Cartan pseudoscalaron inflation

Alessandro Di Marco , Emanuele Orazi , Gianfranco Pradisi This is my paper
classification hep-th astro-ph.COgr-qc
keywords pseudoscalaroncorrespondingeinstein-cartanresultingacquireactionadditionalbasically
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study a class of early universe cosmological models based on Einstein-Cartan gravity and including a higher derivative term corresponding to a power of the Holst scalar curvature. The resulting effective action is basically given by General Relativity and an additional neutral pseudoscalar field (the pseudoscalaron), unequivocally related to the corresponding components of the torsion, that necessarily acquire a dynamics. The induced pseudoscalaron potential provides a realistic inflationary phase together with a very rich postinflationary epoch, resulting by the coupling of the pseudoscalaron to ordinary matter.

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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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  2. Quasi-pole inflation in metric-affine gravity

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  3. Natural Metric-Affine Inflation: Reloaded

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  4. Einstein-Cartan pseudoscalaron inflation, reheating and nonthermal leptogenesis

    astro-ph.CO 2026-05 unverdicted novelty 5.0

    Einstein-Cartan pseudoscalaron inflation coupled to type-I seesaw neutrinos makes nonthermal leptogenesis a necessary mechanism for the baryon asymmetry, yielding ns ~ 0.97, r ~ 0.004 and nB/s ~ 8.7e-11 for gamma ~ -1...

  5. Naturally Light Distortion

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    gr-qc 2025-12 conditional novelty 5.0

    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.