We introduce neutral excitation density-functional theory (XDFT), a computationally light, generally applicable, first-principles technique for calculating neutral electronic excitations. The concept ...

Abstract: Variational methods are widely used in the meteorological community to retrieve 3-D wind from single light detection and ranging (LiDAR) observations, but the weights for loss function ...

Sharp regularity results for minimisers of double phase functionals with variable exponents have been extended beyond the constant exponent case. Under mild continuity assumptions on the exponent ...