272 citations · 1.1k across the 22 of their papers we have counts for
22 papers
Two-photon double ionization with finite pulses: Application of the virtual sequential model to helium
Siddhartha Chattopadhyay, Carlos Marante, Barry Schneider +1
As a step toward the full \emph{ab-initio} description of two-photon double ionization processes, we present a finite-pulse version of the virtual-sequential model for polyelectron…
ASTRA: a Transition-Density-Matrix Approach to Molecular Ionization
Juan Martín Randazzo, Carlos Marante, Siddhartha Chattopadhyay +3
We describe \ASTRA{} (AttoSecond TRAnsitions), a new close-coupling approach to molecular ionization that uses many-body transition density matrices between ionic states with arbit…
ASTRA, A Transition Density Matrix Approach to the Interaction of Attosecond Radiation with Atoms and Molecules
Juan M Randazzo, Carlos Marante, Siddhartha Chattopadhyay +4
A new formalism and computer code, ASTRA (AttoSecond TRAnsitions), has been developed to treat the interactions of short, intense radiation with molecules. The formalism makes exte…
ITVOLT: An Iterative Solver for the Time-Dependent Schrödinger Equation
Ryan Schneider, Heman Gharibnejad, Barry I. Schneider
We present a novel approach for solving the time-dependent Schrödinger equation (TDSE). The method we propose converts the TDSE to an equivalent Volterra integral equation; introdu…
A Multi-Center Quadrature Scheme for the Molecular Continuum
Heman Gharibnejad, Nicolas Douguet, Jeppe Olsen +2
A common way to evaluate electronic integrals for polyatomic molecules is to use Becke's partitioning scheme [J. Chem. Phys.88, 2547 (1988)] in conjunction with overlapping grids c…
Comparison of Numerical Approaches to the Time-Dependent Schrödinger Solutions in One Dimension
Heman Gharibnejad, Barry I. Schneider, Mark Leadingham +1
We examine the performance of various time propagation schemes using a one-dimensional model of the hydrogen atom. In this model the exact Coulomb potential is replaced by a soft-c…