tRecX -- an environment for solving time-dependent Schrödinger-like problems

Abstract

TRecX is a C++ code for solving generalized inhomogeneous time-dependent Schrödinger-type equations $id\Psi /dt=H[t,\Psi ]+\Phi$ in arbitrary dimensions and in a variety of coordinate systems. The operator $H[t,\Psi ]$ may have simple non-linearities, as in Gross-Pitaevskii and Hartree(-Fock) problems. Primary application of tRecX has been non-perturbative strong-field single and double photo-electron emission in atomic and molecular physics. The code is designed for large-scale {\it ab initio} calculations, for exploring models, and for advanced teaching in computational physics. Distinctive numerical methods are the time-dependent surface flux method for the computation of single and double emission spectra and exterior complex scaling for absorption. Wave functions and operators are handled by tree-structures with the systematic use of recursion on the coarse-grain level. Numerical, analytic, and grid-based discretizations can be combined and are treated on the same abstract level. Operators are specified in the input using a script language including symbolic algebra. User-friendly in- and output, error safety, and documentation are integrated by design.

References in corpus (7)

• Photo-electron momentum spectra from minimal volumes: the time-dependent surface flux method
• Exterior complex scaling as a perfect absorber in time-dependent problems
• t-SURFF: Fully Differential Two-Electron Photo-Emission Spectra
• Dynamic exchange in the strong field ionization of molecules
• Time-resolving electron-core dynamics during strong field ionization in circularly polarized fields
• Double photo-electron momentum spectra of Helium at infrared wavelength
• Electron double-emission spectra for Helium atoms in intense 400 nm laser pulses

Cited by in corpus (4)

• Implementation of high-precision computation capabilities into the open-source dynamic simulation framework YADE
• Eliminating artificial boundary conditions in time-dependent density functional theory using Fourier contour deformation
• eTraj.jl: Trajectory-Based Simulation for Strong-Field Ionization
• Single-photon and multi-photon Fano lines for helium and neon using tRecX-haCC