Quantum many-body theory

We focus on the development of theoretical methodology to study non-equilibrium quantum systems. These techniques involve diagrammatic perturbation theory and time-dependent density functional theory. We currently focus on the description of electron-phonon and electron-photon systems and in particular on time-resolved spectroscopies. A very recent focus is the development of quantum algorithms to simulate quantum many-body systems on quantum computers.
Time-resolved spectrospies

Table of contents

Research group type
Research group
Core fields of research
Basic natural phenomena and mathematical thinking
Research areas
Second quantum revolution
Nanoscience Center
Materials physics
Faculty
Faculty of Mathematics and Science
Department
Department of Physics

Research group description

We focus on the development of theoretical methodology to study non-equilibrium quantum systems, such as molecules and solids exposed to strong laser pulses and the description of time-resolved spectroscopies. The theoretical techniques involve diagrammatic perturbation theory and time-dependent density functional theory. A recent additional focus is to develop quantum algorithms to simulate strongly correlated quantum many-body systems on quantum computers.

Research topics

  • Nonequilibrium many-body theory for electrons and phonons/photons
  • Time-resolved spectroscopies
  • Non-equilibrium Green functions and time-dependent density-functional theory
  • Quantum computing and quantum lattice systems

Publications

Publication
2024
Available through Open Access

Journal of Chemical Physics
Penz, Markus
van Leeuwen, Robert
Publication
2024
Available through Open Access

New Journal of Physics
Leeuwen, Robert van
Publication
2024
Available through Open Access

Journal of Physics A: Mathematical and Theoretical
Sutter, Sarina M
Penz, Markus
Ruggenthaler, Michael
Leeuwen, Robert van
Giesbertz, Klaas J H
Publication
2023
Available through Open Access

Quantum
Penz, Markus
van Leeuwen, Robert
Publication
2023
Available through Open Access

Physical Review X
Stefanucci, Gianluca
van Leeuwen, Robert
Perfetto, Enrico
Publication
2022
Available through Open Access

Journal of Physics A : Mathematical and Theoretical
Hyrkäs, Markku
Karlsson, Daniel
van Leeuwen, Robert
Publication
2022
Available through Open Access

Physical Review B
Pavlyukh, Y.
Perfetto, E.
Karlsson, Daniel
van Leeuwen, Robert
Stefanucci, G.
Publication
2022
Available through Open Access

Physical Review B
Pavlyukh, Y.
Perfetto, E.
Karlsson, Daniel
van Leeuwen, Robert
Stefanucci, G.
Publication
2021
Available through Open Access

Journal of Chemical Physics
Penz, Markus
van Leeuwen, Robert
Publication
2021
Available through Open Access

Journal of Chemical Physics
Tuovinen, Riku
van Leeuwen, Robert
Perfetto, Enrico
Stefanucci, Gianluca
Publication
2021
Available through Open Access

Physical Review Letters
Karlsson, Daniel
van Leeuwen, Robert
Pavlyukh, Yaroslav
Perfetto, Enrico
Stefanucci, Gianluca
Publication
2021
Available through Open Access

Physical Review B
Ridley, Michael
Kantorovich, Lev
van Leeuwen, Robert
Tuovinen, Riku

Teaching

Lectures notes on electrodynamics

Research group