17 citations · 72 across the 9 of their papers we have counts for
6 papers · 1 filter
Dark energy and dark matter from an inhomogeneous dilaton
Mikel Susperregi
A cosmological scenario is proposed where the dark matter (DM) and dark energy (DE) of the universe are two simultaneous manifestations of an inhomogenous dilaton. The equation of…
Overconstrained dynamics in galaxy redshift surveys
Mikel Susperregi
The least-action principle (LAP) method is used on four galaxy redshift surveys to measure the density parameter Omega_m and the matter and galaxy-galaxy power spectra. The dataset…
Breaking the degeneracy of cosmological parameters in galaxy redshift surveys
Mikel Susperregi
The measurement of cosmological parameters is investigated in a representation of the least-action method that uses a redshift-space dataset to simultaneously constrain the real-sp…
Spectrum of density fluctuations in Brans-Dicke chaotic inflation
Mikel Susperregi
In the context of Brans--Dicke theories, eternal inflation is described in such a way that the evolution of the inflaton field is determined by the value of the Planck mass in diff…
Cosmic density and velocity fields in Lagrangian perturbation theory
Mikel Susperregi, Thomas Buchert
A first- and second-order relation between cosmic density and peculiar-velocity fields is presented. The calculation is purely Lagrangian and it is derived using the second-order s…
The Principle of Least Action and Clustering in Cosmology
Mikel Susperregi, James Binney
A scheme is developed which enables one to trace backwards in time the cosmic density and velocity fields, and to determine accurately the current-epoch velocity field from the cur…