Rp attractors static neutron star phenomenology
VK Oikonomou - Monthly Notices of the Royal Astronomical …, 2023 - academic.oup.com
In this work, we study the neutron star phenomenology of R p attractor theories in the
Einstein frame. The Einstein frame R p attractor theories have the attractor property that they …
Einstein frame. The Einstein frame R p attractor theories have the attractor property that they …
Inflationary attractors predictions for static neutron stars in the mass-gap region
SD Odintsov, VK Oikonomou - Physical Review D, 2023 - APS
In this work we study static neutron stars in the context of several inflationary models which
are popular in cosmology. These inflationary models are nonminimally coupled scalar …
are popular in cosmology. These inflationary models are nonminimally coupled scalar …
Static neutron stars perspective of quadratic and induced inflationary attractor scalar-tensor theories
VK Oikonomou - Classical and Quantum Gravity, 2023 - iopscience.iop.org
This study focuses on the static neutron star perspective for two types of cosmological
inflationary attractor theories, namely the induced inflationary attractors and the quadratic …
inflationary attractor theories, namely the induced inflationary attractors and the quadratic …
Neutron stars phenomenology with scalar–tensor inflationary attractors
SD Odintsov, VK Oikonomou - Physics of the Dark Universe, 2021 - Elsevier
In this work we shall study the implications of a subclass of E-models cosmological
attractors, namely of a-attractors, on hydrodynamically stable slowly rotating neutron stars …
attractors, namely of a-attractors, on hydrodynamically stable slowly rotating neutron stars …
Constraints on the primordial curvature power spectrum by pulsar timing array data: a polynomial parameterization approach
Q Fei - Communications in Theoretical Physics, 2024 - iopscience.iop.org
The recent stochastic signal observed jointly by NANOGrav, parkes pulsar timing array,
European pulsar timing array, and Chinese pulsar timing array can be accounted for by …
European pulsar timing array, and Chinese pulsar timing array can be accounted for by …
Universal inflationary attractors implications on static neutron stars
VK Oikonomou - Classical and Quantum Gravity, 2021 - iopscience.iop.org
We study static neutron stars in the context of a class of non-minimally coupled inflationary
potentials, the universal attractors. Universal attractors are known to generate a viable …
potentials, the universal attractors. Universal attractors are known to generate a viable …
Constant-roll inflation with non-minimally derivative coupling
We investigate the constant-roll inflation with non-minimally kinetic coupling to the Einstein
tensor. With the slow-roll parameter \eta_ϕ=-̈ϕ/(Ḣϕ) being a constant, we calculate the …
tensor. With the slow-roll parameter \eta_ϕ=-̈ϕ/(Ḣϕ) being a constant, we calculate the …
Generalized -attractor cosmology in the Jordan and Einstein frames: New type of attractors and revisiting standard Jordan frame inflation
SD Odintsov, VK Oikonomou - International Journal of Modern …, 2023 - World Scientific
In this work, we study a new class of attractor models which we shall call generalized R p-
attractor models. This class of models is based on a generalization of the Einstein frame …
attractor models. This class of models is based on a generalization of the Einstein frame …
[HTML][HTML] Constraints on primordial curvature power spectrum with kination era: Insights from NANOGrav 15-year data set
Q Fei, F Shen - Nuclear Physics B, 2024 - Elsevier
The stochastic signal detected by the NANOGrav, PPTA, EPTA, and CPTA collaborations
can be attributed to gravitational waves induced by the primordial curvature perturbations …
can be attributed to gravitational waves induced by the primordial curvature perturbations …
Constraints on the Primordial Curvature Power Spectrum and Reheating Temperature from the NANOGrav 15-Year Dataset
Q Fei - Universe, 2024 - mdpi.com
The stochastic signal observed by collaborations such as NANOGrav, PPTA, EPTA+ InPTA,
and CPTA may originate from gravitational waves induced by primordial curvature …
and CPTA may originate from gravitational waves induced by primordial curvature …