From the 1 of 15 linked papers with an AI index.
15 papers
Inflation with Nieh-Yan-like terms in metric-affine gravity
Ilaria Andrei, Christian Dioguardi, Damianos Iosifidis +3
We study single-field slow-roll inflation in metric-affine gravity with a scalar field non-minimally coupled to the non-Riemannian Ricci scalar and to the divergences of the torsio…
Belinfante Symmetrization from Metric-Affine Conservation Laws: Hypermomentum as the Improvement Term -- The Cases of QED and QCD
Damianos Iosifidis
The paper derives the Belinfante–Rosenfeld symmetrization of the energy‑momentum tensor from metric‑affine conservation laws, showing that the divergence of the hypermomentum curre…
Novel Regge-like trajectories for spinning, dilating, hadronic particles
Damianos Iosifidis
We study the of motion of a spinning, dilating particle with hadronic properties moving on a generic geometric background including curvature, torsion, and nonmetricity. In particu…
Friedmann cosmology with fluids and hyperfluids
Ilaria Andrei, Damianos Iosifidis, Laur Järv +1
We discuss flat Friedmann-Lemaitre-Robertson-Walker (FLRW) metric-affine cosmology where the metric and connection as well as the matter energy-momentum and hypermomentum all obey…
Cosmology of Cubic Poincaré Gauge gravity
Sebastian Bahamonde, Rebecca Briffa, Konstantinos Dialektopoulos +2
In this paper, we study flat FLRW cosmology for a Poincaré gauge theory containing cubic invariants that is free from ghosts in arbitrary backgrounds in the axial and vector secto…
Non-local Metric-Affine Gravity
Salvatore Capozziello, Damianos Iosifidis
Non-local gravity can potentially solve several problems of gravitational field both at Ultra-Violet and Infra-Red scales. However, such an approach has been formulated mainly in m…