Professors

Department of Physics & Astronomy
이승섭
Lee, Seung-Sup Assistant Professor
Office : 56-407 , +82-2-880-1417
https://cqm.snu.ac.kr (Computational quantum many-body theory)

Education

  • · 2013 Ph.D. in Physics, Korea Advanced Institute of Science and Technology (KAIST)
  • · 2006 B.S. in Physics (Minor in Mathematics), KAIST

Career

  • · 2022-present Assistant professor, Seoul National University
  • · 2017-2022 Postdoctoral researcher, Ludwig Maximilian University of Munich (LMU), Germany
  • · 2015-2017 Alexander von Humboldt fellow, LMU, Germany
  • · 2013-2015 Postdoctoral researcher, KAIST

Research Interests

We develop the computational theory of quantum many-body systems and apply it to various systems, ranging from strongly correlated electrons to quantum devices to ultracold atoms. We focus on the approaches based on tensor network methods, such as numerical renormalization group (NRG) and density matrix renormalization group (DMRG), as well as dynamical mean-field theory (DMFT) and its extensions.

Selected Publications in the last 5 years

  1. S.-S. B. Lee, F. B. Kugler, and J. von Delft, "Computing Local Multipoint Correlators Using the Numerical Renormalization Group", Phys. Rev. X 11, 041007 (2021).
  2. F. B. Kugler, S.-S. B. Lee, and J. von Delft, "Multipoint Correlation Functions: Spectral Representation and Numerical Evaluation", Phys. Rev. X 11, 041006 (2021).
  3. E. Walter, K. M. Stadler, S.-S. B. Lee, Y. Wang, G. Kotliar, A. Weichselbaum, and J. von Delft, "Uncovering Non-Fermi-Liquid Behavior in Hund Metals: Conformal Field Theory Analysis of an SU(2) × SU(3) Spin-Orbital Kondo Model", Phys. Rev. X 10, 031052 (2020).
  4. S.-S. B. Lee, J. von Delft, and A. Weichselbaum, "Doublon-Holon Origin of the Subpeaks at the Hubbard Band Edges", Phys. Rev. Lett. 119, 236402 (2017).