The Machian cosmological solution satisfying φ = O(ρ/ω) in the generalized scalar-tensor theory of gravitation with the varying cosmological constant is summarized. The scalar field φ with the exponential potential is introduced as dark matter and the barotropic evolution of matter in the universe is discussed. As the universe expands, the coefficient γ of the equation of state approaches to −1...

Scalar population models, commonly referred to as count-based models, are based on time-series data of population sizes and may be useful for screening-level ecological risk assessments when data for more complex models are not available. Appropriate use of such models for management purposes, however, requires understanding inherent biases that may exist in these models. Through a series of si...

A scalar field ? endowed with a trigonometric potential has been proposed to play the role of Dark Matter. deep study cosmological evolution linear perturbations, and its comparison Cold Matter (CDM) Fuzzy (FDM) cases (scalar quadratic potential), reveals an enhancement in amplitude mass power spectrum for large wave numbers due non-linearity axion-like potential. For first time, we scale-depen...

in this letter we have proposed a new regularization scheme to deal with the divergent integralsoccurring in the quantum mechanical problem of calculating the bound state energy of the delta-functionpotential in two and three dimensions. based on the schwinger parameterization technique we argue thatthere are no infinities even in d dimensions. in this way we were able to compare our proposal w...