# CCPQ Scientific Areas

## Summary keywords

**Multiphoton Physics**: atoms and molecules in laser fields, ab initio time-independent and time-dependent methods for electron interractions, harmonic generation, relativistic and magnetic effects

**Electron collisions with atoms and atomic ions:**Scattering at intermediate energies, collisions with iron-peak elements, electron impact ionization, photoionization

**Electron collisions with molecules and molecular ions:**electronic excitation, dissociative recombination, vibrational excitation, photoionization, relativistic effects.

**Positron collisions and annihilation with atoms and molecules:**variational calculations, R-matrix calculations,

**Anti-atom collisions and annihilation with atoms and molecules**: trapped antihydrogen, impurity interactions, variational calculations.

**Quantum information with many-body systems, ultracold atoms in optical lattices**, DMRG & Exact diagonalisation, quantum thermodynamics

**Molecular wavepacket studies of fundamental molecular reactivity**by solving the time-dependent Schrödinger equation based on the MCTDH algorithm

**Spectroscopic molecular line lists for exoplanet & other atmospheres**

The Working Group page contains links to individual members' websites describing scientific work in more detail.

Please also see the CCP6 project archive: a fully amalgamated set of links will appear in the near future.

This page is under gradual construction. Fuller descriptions of particular projects, with links, will be added as the page is updated. Some sample topic headlines and illustrtions follow.