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of 2 191
pro vyhledávání: '"Stefanucci, A"'
Autor:
Stefanucci, Gianluca, Perfetto, Enrico
The ultrafast conversion of coherent excitons into incoherent excitons, as well as the subsequent exciton diffusion and thermalization, are central topics in current scientific research due to their relevance in optoelectronics, photovoltaics and pho
Externí odkaz:
http://arxiv.org/abs/2407.17077
Autor:
Stefanucci, Gianluca, Perfetto, Enrico
In this paper, we present an exact formula for the phonon linewidths involving only dressed electron-phonon couplings and ensuring the positivity property. The formula is designed to account for both nonadiabatic and correlation effects, and it provi
Externí odkaz:
http://arxiv.org/abs/2407.12285
Publikováno v:
npj 2D Mater Appl 8, 40 (2024)
The interaction of excitons with lattice vibrations underlies the scattering from bright to dark excitons as well as the coherent modulation of the exciton energy. Unlike the former mechanism, which involves phonons with finite momentum, the latter c
Externí odkaz:
http://arxiv.org/abs/2406.15221
Autor:
Stefanucci, Gianluca
The extraordinary quantum properties of nonequilibrium systems governed by dissipative dynamics have become a focal point in contemporary scientific inquiry. The Nonequilibrium Green's Functions (NEGF) theory provides a versatile method for addressin
Externí odkaz:
http://arxiv.org/abs/2402.10824
The interaction of electrons with quantized phonons and photons underlies the ultrafast dynamics of systems ranging from molecules to solids, giving rise to a plethora of physical phenomena experimentally accessible using time-resolved techniques. Gr
Externí odkaz:
http://arxiv.org/abs/2312.00468
Autor:
Stefanucci, Gianluca, Perfetto, Enrico
Starting from the {\em ab initio} many-body theory of electrons and phonons, we go through a series of well defined simplifications to derive a set of coupled equations of motion for the electronic occupations and polarizations, nuclear displacements
Externí odkaz:
http://arxiv.org/abs/2311.03980
Autor:
Azzurra Stefanucci, Lorenza Marinaccio, Stefano Pieretti, Joseph A. Mancuso, Carrie Stine, John M. Streicher, Adriano Mollica
Publikováno v:
ACS Omega, Vol 9, Iss 45, Pp 45214-45220 (2024)
Externí odkaz:
https://doaj.org/article/76a06a568e514321a4c8daeee15704ff
The attention towards food products characteristics, such as nutritional properties and traceability, has risen substantially in the recent years. Consequently, we are witnessing an increased demand for the development of modern tools to monitor, ana
Externí odkaz:
http://arxiv.org/abs/2309.06999
Determining industry and product/service codes for a company is an important real-world task and is typically very expensive as it involves manual curation of data about the companies. Building an AI agent that can predict these codes automatically c
Externí odkaz:
http://arxiv.org/abs/2305.13532
Autor:
Perfetto, Enrico, Stefanucci, Gianluca
Quantum simulations of photoexcited low-dimensional systems are pivotal for understanding how to functionalize and integrate novel two-dimensional (2D) materials in next-generation optoelectronic devices. First principles predictions are extremely ch
Externí odkaz:
http://arxiv.org/abs/2305.07458