107 citations · 208 across the 11 of their papers we have counts for
12 papers
Linear-response time-dependent density-functional theory with local range separation: Core and valence resonances of the neon atom
Jari van Gog, Felipe Zapata, Julien Toulouse
We investigate range-separated hybrids (RSHs) and locally range-separated hybrids (LRSHs) for linear-response time-dependent density-functional theory (TDDFT) Sternheimer calculati…
Gauge-invariant absorption of light from a coherent superposition of states
Axel Stenquist, Felipe Zapata, Jan Marcus Dahlström
Absorption and emission of light is studied theoretically for excited atoms in coherent superposition of states subjected to isolated attosecond pulses in the extreme ultraviolet r…
Photoionization and core resonances from range-separated time-dependent density-functional theory for open-shell states: Example of the lithium atom
Julien Toulouse, Karno Schwinn, Felipe Zapata +3
We consider the calculations of photoionization spectra and core resonances of open-shell systems using range-separated time-dependent density-functional theory. Specifically, we u…
Thomas--Reiche--Kuhn Correction for Truncated Configuration Interaction Spaces: Case of Laser-Assisted Dynamical Interference
Mattias Bertolino, Stefanos Carlström, Jasper Peschel +3
The Thomas--Reiche--Kuhn sum rule is used to form an effective potential that is added to the time-dependent configuration interaction singles (TDCIS) equations of motion in veloci…
Photoionization and core resonances from range-separated density-functional theory: General formalism and example of the beryllium atom
Karno Schwinn, Felipe Zapata, Antoine Levitt +3
We explore the merits of linear-response range-separated time-dependent density-functional theory (TDDFT) for the calculation of photoionization spectra. We consider two variants o…
Studying ultrafast Rabi dynamics with a short-wavelength seeded free-electron laser
Saikat Nandi, Edvin Olofsson, Mattias Bertolino +26
Rabi oscillations are periodic modulations of populations in two-level systems interacting with a time-varying field. They are ubiquitous in physics with applications in different…
Relativistic time-dependent configuration-interaction singles
Felipe Zapata, Jimmy Vinbladh, Anton Ljungdahl +2
In this work, a derivation and implementation of the relativistic time-dependent configuration interaction singles (RTDCIS) method is presented. Various observables for krypton and…
Complete characterization of multi-channel single photon ionization
Jasper Peschel, David Busto, Marius Plach +11
Ionization of atoms and molecules by absorption of a light pulse results in electron wavepackets carrying information on the atomic or molecular structure as well as on the dynamic…
Implementation and validation of the relativistic transient absorption theory within the dipole approximation
Felipe Zapata, Jimmy Vinbladh, Eva Lindroth +1
A relativistic transient absorption theory is derived, implemented and validated within the dipole approximation based on the time-dependent Dirac equation. Time-dependent simulati…
Propensity rules and interference effects in laser-assisted photoionization of helium and neon
Mattias Bertolino, David Busto, Felipe Zapata +1
We investigate the angle-resolved photoelectron spectra from laser-assisted photoionization for helium and neon atoms using an \textit{ab initio} method based on time-dependent sur…
Linear-response range-separated density-functional theory for atomic photoexcitation and photoionization spectra
Felipe Zapata, Eleonora Luppi, Julien Toulouse
We investigate the performance of the range-separated hybrid (RSH) scheme, which combines long-range Hartree-Fock (HF) and a short-range density-functional approximation (DFA), for…
On the optimal basis set for electron dynamics in strong laser fields: The case of molecular ion H
Marie Labeye, Felipe Zapata, Emanuele Coccia +5
A clear understanding of the mechanisms that control the electron dynamics in strong laser field is still a challenge that requires to be interpreted by advanced theory. Developmen…