Riccardo Rossi

EPFL SB IPHYS CQSL
PH H2 487 (Bâtiment PH)
Station 3
1015 Lausanne

EPFL SB IPHYS CQSL
PH H2 477 (Bâtiment PH)
Station 3
1015 Lausanne

Awards

Hermann Kümmel Early Achievement Award

International Advisory Committee of the "Recent Progress in Many-Body Theories" (RPMBT) conference series

2024

Research

Current Research Fields

My research focuses on the development and application of theoretical and computational methods for understanding correlated quantum matter, with connections to condensed-matter physics, ultracold atomic systems, and quantum chemistry. I am particularly interested in collective phenomena that arise from strong interactions, including unconventional superconductivity, non-Fermi-liquid behavior, quantum magnetism, and quantum spin liquids.

A central goal of my work is to obtain controlled and quantitatively accurate descriptions of strongly correlated fermionic systems. To this end, I develop and use diagrammatic techniques that reorganize many-body perturbation theory into computationally efficient frameworks, as well as new types of variational methods. I am especially interested in novel approaches that combine analytical and physical insight with high-precision numerical calculations.

More broadly, my research aims to clarify how exotic phases of matter emerge from microscopic interactions, how they can be characterized theoretically, and how their observable signatures can be related to experiments.

Prospective students interested in theoretical and computational quantum matter are encouraged to contact me regarding research opportunities at the master’s or PhD level.

Teaching & PhD

PhD Students

Clemens Giuliani

Courses

Quantum physics IV

PHYS-426

Introduction to the path integral formulation of quantum mechanics. Derivation of the perturbation expansion of Green's functions in terms of Feynman diagrams. Several applications will be presented, including non-perturbative effects, such as tunneling and instantons.