17 citations · 45 across the 12 of their papers we have counts for
8 papers · 1 filter
Non-Gaussian Effects on Domain Growth
Sang Pyo Kim, F. C. Khanna
The vacuum two-point function is calculated beyond the Gaussian approximation during the second order phase transition. It is found that the correlation function is dominated by th…
New Solutions for Evolution of the Scale Factor with a Variable Cosmological Term
Carlos Pinheiro, F. C. Khanna
The cosmological term is assumed to be a function of time such as where a(t) means the scale factor of standard cosmology. Analytical solutions for radiation dominated…
Some Comments on Wheeler De Witt Equation for Gravitational Collapse and the Problem of Time
Carlos Pinheiro, F. C. Khanna
We write the Hamiltonian for a gravitational spherically symmetric scalar field collapse with massive scalar field source, and we discuss the application of Wheeler De Witt equatio…
Analysis of Maxwell Equations in a Gravitational Field
Sortelano Araujo Diniz, Carlos Pinheiro, F. C. Khanna
In a gravitational field, we analyze the Maxwell equations, the correponding electromagnetic wave and continuity equations. A particular solution for parellel electric and magnetic…
Black Hole Entropy in 1+1 Dimensions from a Quasi-Chern Simons term in a Gravitational Background
Carlos Pinheiro, F. C. Khanna
We introduce a 'quasi-topological` term [1] in D=1+1 dimensions and the entropy for black holes is calculated [2]. The source of entropy in this case is justified by a non-null str…
Non-Parallel Electric and Magnetic Fields in a Gravitational Background, Stationary Gravitational Waves and Gravitons
Carlos Pinheiro, J. A. Helayel-Neto, Gilmar S. Dias +1
The existence of an electromagnetic field with parallel electric and magnetic field components in the presence of a gravitational field is considered. A non-parallel solution is sh…