Sam and James's paper Full Configuration Interaction Excited-State Energies in Large Active Spaces from Subspace Iteration with Repeated Random Sparsification is published in J. Chem. Theory Comput.!
Tami, Xiao, and Hong-Zhou's paper Accurate thermochemistry of covalent and ionic solids from spin-component-scaled MP2 is published in J. Chem. Phys. and selected as an Editor's Pick!
Petra's paper Anharmonic lattice dynamics from vibrational dynamical mean-field theory is published in Phys. Rev. B! Phonons, Green's functions, Langevin equations, quantum master equations ... there's something for everyone!
Giulia and Yeongsu's paper Excitons and their Fine Structure in Lead Halide Perovskite Nanocrystals from Atomistic GW/BSE Calculations is posted to the arXiv!
Sam's paper Approximating Matrix Eigenvalues by Subspace Iteration with Repeated Random Sparsification, with Rob Webber and Jonathan Weare, is published in the SIAM Journal on Scientific Computing.
James's paper Normal state of attractive Fermi gases from coupled-cluster theory, with John Sous, is published in Phys. Rev. A (a group first!).
Interfacial electric fields catalyze Ullmann coupling reactions on gold surfaces, featuring calculations by Norah and Xiao in collaboration with the Nuckolls, Roy, and Venkataraman groups as part of our CCI, is published in Chem. Sci.!
Postdoc PCTS (2014-2016)
Ph.D. Columbia University (2014)
B.A. NYU (2009)
NSF Graduate Research Fellow (2019-2022)
B.S. Penn State (2019)
Ph.D. Max Planck Institute, Hamburg (2020)
M.Sc. Berlin Institute of Technology & FHI (2016)
B.Sc. Berlin Institute of Technology (2013)
Ph.D. UC Berkeley (2022)
M.Phil. University of Cambridge (2017)
A.B. Harvard University (2016)
Ph.D. University of Pittsburgh (2020)
B.S. Nazarbayev University (2015)
B.S. UC Berkeley (2021)
Ph.D. University of Cambridge (2020)
M.Phil. University of Cambridge (2015)
M.Sci., B.A. University of Cambridge (2014)
M.S. National Taiwan University (2018)
B.S. National Taiwan University (2016)
Ph.D. MIT (2022)
M.Phil. University of Cambridge (2017)
B.S. Ohio State (2016)
B.S. University of Washington (2020)
Ph.D. MIT (2020)
B.S. Peking University (2015)
B.S. Brooklyn College (expected 2024)
Postdoc, Centro de Fisica de Materiales, Coto group
Teacher, Newton North High School
Postdoc, MIT, Kulik group
Postdoc, Yale, Hammes-Schiffer group
Assistant Professor, Bar-Ilan University
Postdoc, UT Austin, Siegel group
Postdoc, MPSD, Rossi group
M.Sc. student, Oxford (expected 2023)
Software Engineer, Lucata
Ph.D. student, Caltech, Minnich group
Assistant Professor, UC Santa Cruz
We work on a variety of quantum-mechanical problems motivated by excited-state phenomena. This research occurs at the fascinating interface of physical chemistry, condensed-matter physics, and materials science.
Building on modern theories of quantum dynamics, we develop powerful simulation techniques for nonequilibrium and time-resolved spectroscopies. These new tools enable the accurate simulation of extremely large and complex sytems, providing new insights into excited-state structure and dynamics.
We are actively exploring the excited-state behavior of fundamentally interesting and technologically promising materials, especially those that are anisotropic, layered, or low-dimensional. Particular materials of interest include conjugated polymers, organic molecular crystals, and quasi-two-dimensional inorganic semiconductors.
Aiming towards highly accurate but insightful descriptions of electronic excitations, we formulate and apply electronic structure methods adapted for the condensed phase. Some of our favorite tools are low-energy effective theories, many-body diagrammatics, and coupled-cluster techniques.
Timothy Berkelbach is an Associate Professor in the Department of Chemistry at Columbia University. He received his B.A. in physics and chemistry from NYU in 2009 and his Ph.D. in chemical physics from Columbia in 2014. From 2014 to 2016, he was a postdoctoral fellow in the Princeton Center for Theoretical Science, and from 2016 to 2018, he was a Neubauer Family Assistant Professor in the Department of Chemistry and the James Franck Institute at the University of Chicago. He moved to Columbia in 2019 and received tenure in 2022. From 2019 to 2022, he was also a Research Scientist in the Center for Computational Quantum Physics at the Flatiron Institute, where he is now a Visiting Scholar.
2019 NSF CAREER Award
3000 Broadway, 518 Havemeyer Hall, New York NY 10027
1 212 854 0347
We welcome students and postdocs of all genders, races, ages, sexual orientations, and disability statuses. If you're interested in joining us in one of the most multicultural cities in the world, contact Tim for more information on the Columbia PhD program or postdoctoral openings.