Theory and Methods

Digital illustration of quantum many-body problem

The quantum many-body problem is one of the hard problems of complexity theory: A direct solution requires computational resources that grow exponentially with the size of the problem to be solved.

At CCQ we are developing, optimizing and benchmarking sophisticated algorithms to make the many-body problem tractable. Our group has expertise in a range of complementary methods including tensor network theory, diagrammatic Monte Carlo, dynamical mean-field theory, density functional theory and wave function, enabling qualitatively new contributions to this grand challenge problem.

Projects

Quantum Embedding Methods Read More

Quantum Monte Carlo Read More

Machine Learning; Neural Quantum States Read More

Tensor Networks Read More

Electronic Structure and Density Functional Theory Read More

People

Matthew Fishman, Ph.D.

Research Scientist-Software, CCQ

Matthew Fishman joined the Center for Computational Quantum Physics at the Flatiron Institute in September, 2018.

Antoine Georges, Ph.D.

Director, CCQ

Antoine Georges is a professor of physics at the Collège de France, where he holds the chair in condensed matter physics. He also has joint appointments with École Polytechnique and the University of Geneva. He received his Ph.D. from the École Normale Supérieure in 1988.…

Andrew Millis, Ph.D.

Co-Director, CCQ

Andrew Millis is co-director of the Center for Computational Quantum Physics at the Flatiron Institute and professor of physics at Columbia University. He currently serves as Managing Director of the Flatiron Institute.

Miguel Morales, Ph.D.

Research Scientist, CCQ

Miguel A. Morales Silva joined the Center for Computational Quantum Physics in 2021 as a Research Scientist.

Anirvan Sengupta, Ph.D.

Senior Research Scientist, CCQ

Anirvan Sengupta is a professor at the Physics and Astronomy Department at Rutgers University.

Miles Stoudenmire, Ph.D.

Research Scientist, CCQ

Miles Stoudenmire joined the Flatiron Institute in fall 2017. His work involves the development and application of algorithms for studying many interacting quantum particles by means of a compressed description of their collective states, known as a tensor network. He is the lead developer of…

Nils Wentzell, Ph.D.

Research Scientist-Software, CCQ

Nils Wentzell joined the Center for Computational Quantum Physics in 2018 to work on method and code development for strongly correlated electron systems.

Shiwei Zhang, Ph.D.

Senior Research Scientist, CCQ

Shiwei Zhang joined the Center for Computational Quantum Physics as a Senior Research Scientist/Group Leader in 2018. He is also Chancellor Professor of Physics at the College of William & Mary