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Covariant evolution of perturbations during reheating in two-field inflation
(2018)
We develop a covariant method for studying the effects of a reheating phase on the primordial adiabatic and isocurvature perturbations in two-field models of inflation. To model the decay of the scalar fields into radiation ...
Effect of Ti and C additions on structural and magnetic properties of (Pr,Nd)-Fe-B nanocrystalline magnetic materials
(ELSEVIER SCIENCE BV, 2008)
Effects of titanium carbide (TiC) addition on structural and magnetic properties of isotropic (Pr,Nd)-Fe-B nanocrystalline magnetic materials have been investigated. In this work, we investigate the effect of TiC addition ...
The seasonal role of field characteristics on seed-eating bird abundances in agricultural landscapes
(Oxford University Press, 2017-06)
In temperate agroecosystems, avian responses in abundance and distribution to landscape attributes may be exacerbated by the coupling of natural seasons and farming practices. We assessed the seasonal roles of field type, ...
Examples of reflection positive field theories
(World Scientific, 2018-02)
The requirement of reflection positivity (RP) for Euclidean field theories is considered. This is done for the cases of a scalar field, a higher derivative scalar field theory and the scalar field theory defined on a ...
Weak-field approximation of effective gravitational theory with local Galilean invariance
(Elsevier B.V., 2009-09-14)
We examine the weak-field approximation of locally Galilean invariant gravitational theories with general covariance in a (4 + 1)-dimensional Galilean framework. The additional degrees of freedom allow us to obtain Poisson, ...
Weak-field approximation of effective gravitational theory with local Galilean invariance
(Elsevier B.V., 2009-09-14)
We examine the weak-field approximation of locally Galilean invariant gravitational theories with general covariance in a (4 + 1)-dimensional Galilean framework. The additional degrees of freedom allow us to obtain Poisson, ...