Extended gravity cosmography

S Capozziello, R D'Agostino… - International Journal of …, 2019 - World Scientific
Cosmography can be considered as a sort of a model-independent approach to tackle the
dark energy/modified gravity problem. In this review, the success and the shortcomings of …

The first three seconds: a review of possible expansion histories of the early universe

R Allahverdi, MA Amin, A Berlin, N Bernal… - arxiv preprint arxiv …, 2020 - arxiv.org
It is commonly assumed that the energy density of the Universe was dominated by radiation
between reheating after inflation and the onset of matter domination 54,000 years later …

Inflation, the Hubble tension, and early dark energy: An alternative overview

W Giarè - Physical Review D, 2024 - APS
I review and discuss the possible implications for inflation resulting from considering new
physics in light of the Hubble tension. My study is motivated by a simple argument that the …

Nonperturbative dynamics of reheating after inflation: a review

MA Amin, MP Hertzberg, DI Kaiser… - International Journal of …, 2015 - World Scientific
Our understanding of the state of the universe between the end of inflation and big bang
nucleosynthesis (BBN) is incomplete. The dynamics at the end of inflation are rich and a …

Planck constraints and gravitational wave forecasts for primordial black hole dark matter seeded by multifield inflation

W Qin, SR Geller, S Balaji, E McDonough, DI Kaiser - Physical Review D, 2023 - APS
We perform a Markov Chain Monte Carlo analysis of a simple yet generic multifield inflation
model characterized by two scalar fields coupled to each other and nonminimally coupled to …

Higgs inflation

J Rubio - Frontiers in Astronomy and Space Sciences, 2019 - frontiersin.org
The properties of the recently discovered Higgs boson together with the absence of new
physics at collider experiments allows us to speculate about consistently extending the …

Standard Model—axion—seesaw—Higgs portal inflation. Five problems of particle physics and cosmology solved in one stroke

G Ballesteros, J Redondo, A Ringwald… - Journal of Cosmology …, 2017 - iopscience.iop.org
We present a minimal extension of the Standard Model (SM) providing a consistent picture
of particle physics from the electroweak scale to the Planck scale and of cosmology from …

Primordial black holes from multifield inflation with nonminimal couplings

SR Geller, W Qin, E McDonough, DI Kaiser - Physical Review D, 2022 - APS
Primordial black holes (PBHs) provide an exciting prospect for accounting for dark matter. In
this paper, we consider inflationary models that incorporate realistic features from high …

Dynamically induced Planck scale and inflation

K Kannike, G Hütsi, L Pizza, A Racioppi… - Journal of High Energy …, 2015 - Springer
A bstract Theories where the Planck scale is dynamically generated from dimensionless
interactions provide predictive inflationary potentials and super-Planckian field variations …

Question of quantum equivalence between Jordan frame and Einstein frame

AY Kamenshchik, CF Steinwachs - Physical Review D, 2015 - APS
In the framework of a general scalar-tensor theory, we investigate the equivalence between
two different parametrizations of fields that are commonly used in cosmology—the so-called …