3 papers
cond-mat.str-el2025
Linear-response theory in Floquet systems
Ayan Pal, Erik G. C. P. van Loon, Ferdi Aryasetiawan
Nonequilibrium quantum physics greatly simplifies in the case of time-periodic Hamiltonians, since Floquet theory provides an analogue to Bloch's theorem in the time domain. Still,…
cond-mat.str-el2025
Density-Functional Green Function Theory: Dynamical exchange-correlation field in lieu of self-energy
F. Aryasetiawan
The one-particle Green function of a many-electron system is traditionally formulated within the self-energy picture. A different formalism was recently proposed, in which the self…
cond-mat.str-el2024
Quantum Magnetic Skyrmions on Kondo-type Lattices
Zhen Zhao, Emil Östberg, Ferdi Aryasetiawan +1
A quantum description is given of nanoskyrmions in 2D textures with localised spins and itinerant electrons, isolated or coupled to leads, in or out-of-equilibrium. The spin-electr…