Concept
Correlation function (quantum field theory)
Publications associées (29)
Absolute energy levels of liquid water from many-body perturbation theory with effective vertex corrections
Alfredo Pasquarello, Aleksei Tal, Thomas Bischoff
We demonstrate the importance of addressing the F vertex and thus going beyond the GW approximation for achieving the energy levels of liquid water in manybody perturbation theory. In particular, we consider an effective vertex function in both the polariz ...
Natl Acad Sciences2024Diagnosing weakly first-order phase transitions by coupling to order parameters
The hunt for exotic quantum phase transitions described by emergent fractionalized de-grees of freedom coupled to gauge fields requires a precise determination of the fixed point structure from the field theoretical side, and an extreme sensitivity to weak ...
2023Cavity Quantum Electrodynamics with strongly correlated fermions
This thesis presents the first cavity quantum electrodynamics experiments performed with a degenerate gas of Li with strong atom-atom interactions. The first part of this manuscript describes the design and the building of the apparatus that has been e ...
EPFL2022Efficient implementation of atom-density representations
Michele Ceriotti, Till Junge, Guillaume André Jean Fraux, Félix Benedito Clément Musil, Michael John Willatt, Max David Veit, Alexander Jan Goscinski
Physically motivated and mathematically robust atom-centered representations of molecular structures are key to the success of modern atomistic machine learning. They lie at the foundation of a wide range of methods to predict the properties of both materi ...
2021Interaction of Confined Polaritons in Microcavity Structures
A polariton is a quasiparticle formed from the coupling of a confined photon in a cavity to electronic excitation, like exciton in a semiconductor. This dissertation reports on series of experiments in confined polariton interaction by design, fabrication, ...
EPFL2021