arXiv subjects

Daniel Pitagora

Publications and source records attributed to Daniel Pitagora.

2 recordsLinked to original sources

arXiv2022

Real-Space, Real-Time Approach to Quantum-Electrodynamical Time-Dependent Density Functional Theory

The Quantum-Electrodynamical Time-Dependent Density Functional Theory (QED-TDDFT) equations are solved by time propagating the wave function on a tensor product of a Fock-space and real-space grid. Applications for molecules in cavities show the accuracy of the approach. Examples include the coupling strength and light frequency dependence of the energies, wave functions, optical absorption spectra, and Rabi splitting magnitudes in cavities, as well as a description of high harmonic generation in cavities.

quant-ph↗

arXiv2021

Energy spectrum and structure of one-dimensional few-electron Wigner crystals with and without coupling to light in cavity

Explicitly Correlated Gaussian basis is used to calculate the energies and wave functions of one dimensional few-electron systems in confinement potentials created by external potentials or coupling to light in cavity. The appearance and properties of Wigner crystal-like structures are discussed. It is shown that one dimensional Wigner crystals can be formed by coupling electrons to light due to the dipole self-interaction term in the light-matter Hamiltonian, provided an additional extremely weak confining potential is present.

quant-ph↗