• Publications
  • Influence
Cosmology and fundamental physics with the Euclid satellite
TLDR
This review is meant to provide a guide to the scientific themes that will underlie the activity of the group during the preparation of the Euclid mission and discusses five broad topics: dark energy and modified gravity, dark matter, initial conditions, basic assumptions and questions of methodology in the data analysis.
Cosmology and Fundamental Physics with the Euclid Satellite
TLDR
This review is meant to provide a guide to the scientific themes that will underlie the activity of the group during the preparation of the Euclid mission and discusses five broad topics: dark energy and modified gravity, dark matter, initial conditions, basic assumptions and questions of methodology in the data analysis.
Curing singularities in cosmological evolution of F(R) gravity
We study F(R) modified gravity models which are capable of driving the accelerating epoch of the Universe at the present time whilst not destroying the standard Big Bang and inflationary cosmology.
Spherical collapse and halo mass function in $f(R)$ theories
We compute the critical density of collapse for spherically symmetric overdensities in a class of $f(R)$ modified gravity models. For the first time we evolve the Einstein, scalar field and nonlinear
Trial of Galileon gravity by cosmological expansion and growth observations
Galileon gravity is a robust theoretical alternative to general relativity with a cosmological constant for explaining cosmic acceleration, with interesting properties such as having second order
Aspects of cosmological expansion in F(R) gravity models
We study cosmological expansion in F(R) gravity using the trace of the field equations. High frequency oscillations in the Ricci scalar, whose amplitude increases as one evolves backward in time,
The well-tempered cosmological constant
Self tuning is one of the few methods for dynamically cancelling a large cosmological constant and yet giving an accelerating universe. Its drawback is that it tends to screen all sources of energy
Multifractal Characterization of the Distribution Pattern of the Human Population
The generalized entropy calculated from the quadrat counts of the population of the United States and Great Britain is plotted against the logarithm of the quadrat size. These graphs are linear over
The paths of gravity in galileon cosmology
Galileon gravity offers a robust gravitational theory for explaining cosmic acceleration, having a rich phenomenology of testable behaviors. We explore three classes of Galileon models — standard
...
1
2
3
4
5
...