141 citations · 279 across the 11 of their papers we have counts for
6 papers · 1 filter
Interacting holographic dark energy
Winfried Zimdahl, Diego Pavon
We demonstrate that a transition from decelerated to accelerated cosmic expansion arises as a pure interaction phenomenon if pressureless dark matter is coupled to holographic dark…
The Maxwell--Boltzmann gas with non-standard self--interactions: a novel approach to galactic dark matter
Alexander Balakin, Roberto A. Sussman, Winfried Zimdahl
Using relativistic kinetic theory, we study spherically symmetric, static equilibrium configurations of a collisionless Maxwell-Boltzmann gas with non-standard self-interactions, m…
Exact solutions for the interacting tachyonic-dark matter system
Ramon Herrera, Diego Pavon, Winfried Zimdahl
We find exact solutions leading to power law accelerated expansion for a homogeneous, isotropic and spatially flat universe, dominated by an interacting mixture of cold dark matter…
CMB constraints on interacting cosmological models
Diego Pavon, Somasri Sen, Winfried Zimdahl
Non-canonical scaling of the form , where and are the energy densities of dark energy and dark matter, respectively, provides a natural way…
Interacting quintessence solution to the coincidence problem
Luis P. Chimento, Alejandro S. Jakubi, Diego Pavon +1
We show that a suitable interaction between a scalar field and a matter fluid in a spatially homogeneous and isotropic spacetime can drive the transition from a matter dominated er…
Self-interacting cosmic fluids: Particle production, causal evolution, and vacuum decay
Winfried Zimdahl
We discuss two different realizations of a ``deflationary'' scenario of the early universe which imply a smooth transition from an initial de Sitter stage to a subsequent radiation…