45 citations · 278 across the 29 of their papers we have counts for
10 papers · 1 filter
Comment to ``Quantization of FRW spacetimes in the presence of a cosmological constant and radiation''
Paolo Amore, Alfredo Aranda, Mayra Cervantes +2
The quantization of the Friedmann-Robertson-Walker spacetime in the presence of a negative cosmological constant was used in a recent paper to conclude that there are solutions tha…
Strong gravitational lensing from compact bodies: analytical results
Paolo Amore, Mayra Cervantes, Arturo De Pace +1
We develop a non--perturbative method that yields analytical expressions for the deflection angle of light in a general static and spherically symmetric metric. It is an improvemen…
On Dalgarno and Lewis Perturbation Theory for Scattering States
Paolo Amore, Francisco M. Fernandez
We apply the method of Dalgarno and Lewis to scattering states and discuss the choice of the unperturbed model in order to have a convergent perturbation series for the phase shift…
Iterative solution of differential equations
Paolo Amore, Hakan Ciftci, Francisco M. Fernandez
We discuss alternative iteration methods for differential equations. We provide a convergence proof for exactly solvable examples and show more convenient formulas for nontrivial p…
Analytical formulas for gravitational lensing: higher order calculation
Paolo Amore, Santiago Arceo, Francisco Fernandez
We extend to higher order a recently published method for calculating the deflection angle of light in a general static and spherically symmetric metric. Since the method is conver…
Variational collocation on finite intervals
Paolo Amore, Mayra Cervantes, Francisco M. Fernández
In this paper we study a new family of sinc--like functions, defined on an interval of finite width. These functions, which we call ``little sinc'', are orthogonal and share many o…