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Viscous Lambda CDM universe models
(Springer Verlag, 2011-03-30)
We explore flat ACDM models with bulk viscosity,
and study the role of the bulk viscosity in the evolution
of these universe models. The dynamical equations for these
models are obtained and solved for some cases of ...
Gravitational Entropy and Inflation
(MDPI, 2013-09-04)
The main topic of this paper is a description of the generation of entropy at
the end of the inflationary era. As a generalization of the present standard model of the
Universe dominated by pressureless dust and a Lorentz ...
Different representations of the Levi-Civita Bertotti Robinson solution
(Springer Verlag, 2013-04-23)
The Levi-Civita Bertotti Robinson (LBR) spacetime is investigated in various coordinate systems.
By means of a general formalism for constructing coordinates in conformally flat spacetimes, coordinate
transformations ...
A new method for identifying possible causal relationships between CO2, total solar irradiance and global temperature change
(Springer, 2015-11-20)
We apply a novel method based upon “before” and “after” relationships to investigate and quantify interconnections between global temperature anomaly, GTA, as response variable, and greenhouse gases, CO2, and total solar ...
Leading the game, losing the competition: identifying leaders and followers in a repeated game
(PLoS One, 2016)
We explore a new method for identifying leaders and followers, LF, in repeated games by analyzing an experimental, repeated (50 rounds) game where Row player shifts the payoff between small and large values – a type of ...
The Cosmic Causal Mass
(MDPI, 2017)
In order to provide a better understanding of rotating universe models, and in particular the Gödel universe, we discuss the relationship between cosmic rotation and perfect inertial dragging. In this connection, the concept ...
Electrodynamics of Radiating Charges
(Hindawi, 2012)
The theory of electrodynamics of radiating charges is reviewed with special emphasis on the role of the Schott energy for the conservation of energy for a charge and its electromagnetic field. It is made clear that the ...
On the relativity of rotation
(Italian Physical Society, 2010)
The question whether rotational motion is relative according to the general theory of relativity is discussed. Einstein’s ambivalence concerning this question is pointed out. In the present article I defend Einstein’s way ...
Celebrating the centenary of the Schwarzschild solutions
(American Association of Physics Teachers, 2016)
This article is a celebration of the centenary of Schwarzschild’s presentations of his external and
internal solutions describing spacetime outside and inside an incompressible, spherically symmetric
body. I ...
On the statistical nature of distinct cycles in global warming variables
(Springer Verlag, 2017-01-10)
Cycle times found in many oceanic time series have been explained with references to external mechanisms that act on the systems. Here we show that when we extract cycle times from 100 sets of paired random series, we find ...