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
2016

Physical Chemistry Chemical Physics
van Leeuwen, Robert
Neugebauer, Johannes
Visscher, Lucas
Bickelhaupt, F. Matthias
Publication
2016

Physical Review B
Karlsson, Daniel
van Leeuwen, Robert
Publication
2016

Physical Review B
Tuovinen, Riku
Säkkinen, Niko
Karlsson, Daniel
Stefanucci, Gianluca
van Leeuwen, Robert
Publication
2016

Physical Chemistry Chemical Physics
Lani, Giovanna
Marino, Simone Di
Gerolin, Augusto
van Leeuwen, Robert
Gori-Giorgi, Paola
Publication
2016

Progress in Non-equilibrium Green's Functions
Tuovinen, Riku
van Leeuwen, Robert
Perfetto, Enrico
Stefanucci, Gianluca
Publication
2016

Progress in Non-equilibrium Green's Functions
Perfetto, E.
Uimonen, Anna-Maija
van Leeuwen, Robert
Stefanucci, G.
Publication
2016

Physical Review Letters
Pavlyukh, Y.
Uimonen, A.-M.
Stefanucci, G.
van Leeuwen, Robert
Publication
2015

Nanoscale
Gomes da Rocha, Claudia
Tuovinen, Riku
van Leeuwen, Robert
Koskinen, Pekka
Publication
2015

Physical Review B
Uimonen, Anna-Maija
Stefanucci, G.
Pavlyukh, Y.
van Leeuwen, Robert
Publication
2015

Journal of Physics: Condensed Matter
Ruggenthaler, Michael
Penz, Markus
van Leeuwen, Robert
Publication
2015

Physical Review A
Perfetto, E.
Uimonen, Anna-Maija
van Leeuwen, Robert
Stefanucci, G.
Publication
2015

Journal of Chemical Physics
Säkkinen, Niko
Peng, Yang
Appel, Heiko
van Leeuwen, Robert

Teaching

Lectures notes on electrodynamics

Research group

Group leaders

Robert van Leeuwen

Professor

Members

Janne Nevalaita

Senior Researcher

Joona Marjamäki

Doctoral Researcher
Daniele Cuomo

Daniele Cuomo

Postdoctoral Researcher