Symposium “New developments in quantum Monte Carlo simulation” at Psi-k 2020 conference

Together with Paul Kent, Dario Alfe,  Neil Drummon, we are organizing the symposium “New developments in quantum Monte Carlo simulation” at the PSI-k conference 2020. The invited speakers are: Sandro Sorella Matthew Foulkes Brenda Rubenstein George Booth There will also be the possibility for those interested to submit an abstract by April 2020 for a… Read More

Symposium “Extreme non-linear optics” at the Psi-k 2020 conference

Together with Eleonora Luppi we are organizing the symposium “Extreme non-linear optics” at the PSI-k conference 2020. The invited speakers are: Vladislav Yakovlev Myrta Grüning Fernando Martin Garcia There will also be the possibility for those interested to submit an abstract by April 2020 for a contributed talk. Three contributions will be selected and the… Read More

Computational School on Electronic Excitations in Novel Materials Using the Yambo Code

The Computational School on Electronic Excitations in Novel Materials Using the Yambo Code, introduces participants to post-DFT simulations, in particular many-body perturbation theory (MBPT) approaches and provide training in the calculation of electronic and optical properties of materials. The program will offer theoretical and technical lectures, as well as dedicated hands-on sessions where the students… Read More

The story of Academic Publishing: from Galileo to Nature

I was invited to give a seminar at the conference of young Italian researchers. At this conference I will present a  talk on the story of academic publishing. I will briflely present the story of academic publising, from the first journals to the modern publication system, passing through open access, impact factor, etc… I show… Read More

Theory of phonon-assisted luminescence

In this presentation I present the theory of phonon-assisted luminescence, in terms of non-equilibrium  Green’s functions and time-dependent perturbation theory. We derived a simple formule for light emission in the limit of low excited carriers including excitonic effects and then included coupling with phonons by time-dependent perturbation theory. This approach is then applied to the… Read More

How strong is the Second Harmonic Generation in single-layer monochalcogenides?

Single-layer monochalcogenides have recently attracted much attention in the scientific community for their strong non-linear response, in particular the second harmonic generation(SHG). The origin of this strong response is still debated. A strong mismatch exist between theory and experiments. In order to clarify this issue, in this work we performed first-principles calculation of linear and… Read More

Many-body perturbation theory calculations using the Yambo code

Yambo is an open source project aimed at studying excited state properties of condensed matter systems from first principles using many-body methods. As input, yambo requires ground state electronic structure data as computed by density functional theory codes such as Quantum-Espresso and Abinit.Yambo’s capabilities include the calculation of linear response quantities (both independent-particle and including… Read More

Associate Professor Position at Aix-Marseille University in spring 2019

  We are pleased to announce the opening of a post at the level of Senior Lecturer / Associate Professor at Aix-Marseille University in spring 2019. We are looking for a theoretician in condensed matter with  significant experience in electronic structure calculations and atomistic simulations (e.g. DFT, TD-DFT, ab-initio methods, Monte Carlo  sampling, molecular dynamics)…. Read More

Theoretical Spectroscopy Lectures

This year I was invited to give two lectures at the school on “Theoretical Spectroscopy” organized by F. Sottile, V. Olevano and G. Rignanese. I will present two lectures on “Non-linear approaches to TDDFT :: non perturbative real-time” and “Bethe-Salpeter Equation in real time” and a tutorial on the Lumen code. All the lectures are… Read More

Luminescence of hexagonal boron nitride explained

Luminescence of hexagonal boron nitride (hBN) has puzzled researchers for long time. In standard solid state physics textbooks direct band gap semiconductors are considered efficient light emitters while indirect ones are regarded as inefficient. Hexagonal boron nitride seems to defy this rule. In fact hBN emits light in the ultraviolet with an efficient comparable to… Read More