3 papers
cond-mat.str-el2024
Potential energy surfaces from many-body functionals: analytical benchmarks and conserving many-body approximations
Giovanna Lani, Nicola Marzari
We investigate analytically the performance of many-body energy functionals, derived respectively by Klein and Luttinger and Ward, at different levels of diagrammatic approximation…
cond-mat.str-el2017
Time-dependent density-functional theory for strongly interacting electrons
Luis Cort, Daniel Karlsson, Giovanna Lani +1
We consider an analytically solvable model of two interacting electrons that allows for the calculation of the exact exchange-correlation kernel of time-dependent density functiona…
cond-mat.str-el2016
The adiabatic strictly-correlated-electrons functional: kernel and exact properties
Giovanna Lani, Simone di Marino, Augusto Gerolin +2
We investigate a number of formal properties of the adiabatic strictly-correlated electrons (SCE) functional, relevant for time-dependent potentials and for kernels in linear respo…