Fabio Della Sala

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The recent and widespread interest in the importance of emotional intelligence (EI) at work (Goleman, 1995) has led to the development of programs that are designed to (1) educate people about the relevance of emotional intelligence in the workplace, (2) assess their relative strengths and weaknesses, and (3) provide a framework to develop and enhance their(More)
The influence of methyl or phenyl substitution in beta-position of dioxygenated terthiophene and diphenylthiophene on the optical properties is investigated by first-principles calculations. We compare the approximated singles and doubles coupled cluster (CC2) approach with time-dependent density functional theory methods. CC2 reproduces experimental(More)
We investigate the behavior of the kinetic and the exchange energy densities near the nuclear cusp of atomic systems. Considering hydrogenic orbitals, we derive analytical expressions near the nucleus, for single shells, as well as in the semiclassical limit of large non-relativistic neutral atoms. We show that a model based on the helium iso-electronic(More)
Quantum entanglement is a concept commonly used with reference to the existence of certain correlations in quantum systems that have no classical interpretation. It is a useful resource to enhance the mutual information of memory channels or to accelerate some quantum processes as, for example , the factorization in Shor's Algorithm. Moreover, entanglement(More)
One important property of Kohn-Sham (KS) density functional theory is the exact equality of the energy of the highest occupied KS orbital (HOMO) with the negative ionization potential of the system. This exact feature is out of reach for standard density-dependent semilocal functionals. Conversely, accurate results can be obtained using orbital-dependent(More)
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract We report a discrete dipole approximation approach to analyse the perturbations induced by silver nano-particles on the decay dynamics of a point-like emitter placed in their proximity. Due to the excitation of localized(More)
An exchange-only approach to calculate both valence and Rydberg excita-tion energies within time-dependent density-functional theory is presented. The ground-state Kohn-Sham (KS) orbitals and eigenvalues are evaluated using an effective exact-exchange KS potential, the localized Hartree Fock potential. The exchange-correlation kernel is taken into account(More)
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