Publications by authors named "Marco Vanzini"
Interaction effects can change materials properties in intriguing ways, and they have, in general, a huge impact on electronic spectra. In particular, satellites in photoemission spectra are pure many-body effects, and their study is of increasing interest in both experiment and theory. However, the intrinsic spectral function is only a part of a measured spectrum, and it is notoriously difficult to extract this information, even for simple metals.
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- The Kohn-Sham system is an effective method for calculating electronic density without dealing with complex many-body wavefunctions, although it doesn't directly address excited states.
- The proposal suggests creating auxiliary systems with specialized potentials that focus on specific spectral properties needed for analysis, rather than calculating extensive data that might be unnecessary.
- The text also explores how to develop simplified effective kernels for optical absorption and photoemission, outlining their dependence on electronic density, making the calculations more efficient.