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Dielectric screening in two-dimensional insulators: Implications for excitonic and impurity states in graphane
For atomic thin layer insulating materials we provide an exact analytic form of the two-dimensional (2D) screened potential. In contrast to three-dimensional systems where the macroscopic screeningExpand
Time-dependent density functional theory for many-electron systems interacting with cavity photons.
  • I. Tokatly
  • Physics, Medicine
  • Physical review letters
  • 8 March 2013
It is shown that the electron-photon wave function is a unique functional of the electronic (current) density and the expectation values of photonic coordinates that naturally leads to time-dependent density functional theory for systems coupled to the Caldeira-Leggett bath. Expand
Density functional theory beyond the linear regime: Validating an adiabatic local density approximation
We present a local density approximation (LDA) for one-dimensional (1D) systems interacting via the soft-Coulomb interaction based on quantum Monte Carlo calculations. Results for the ground-stateExpand
Quantum electrodynamical density-functional theory: Bridging quantum optics and electronic-structure theory
In this work, we give a comprehensive derivation of an exact and numerically feasible method to perform ab initio calculations of quantum particles interacting with a quantized electromagnetic field.Expand
Exact Kohn-Sham potential of strongly correlated finite systems.
It is shown that the numerical calculations for a one-dimensional two-electron model system indeed approach and reach the limit and that the functional form of the potential is universal, i.e., independent of the details of the two fragments. Expand
Time-dependent current density functional theory on a lattice
odinger equation, to which the standard existence and uniqueness results for nonlinear differential equations are applicable. For two versions of the lattice TDCDFT, we prove that anyExpand
Time-dependent density functional theory on a lattice
A time-dependent density functional theory (TDDFT) for a quantum many-body system on a lattice is formulated rigorously. We prove the uniqueness of the density-to-potential mapping and demonstrateExpand
Lattice density functional theory at finite temperature with strongly density-dependent exchange-correlation potentials
Trabajo presentado al: "Deutsche Physikalische Gesellschaft Spring Meeting" celebrado en Regensburg (Alemania) del 10 al 15 de Marzo de 2013.
Hydrodynamic theory of an electron gas
The generalized hydrodynamic theory, which does not require assumption of a local equilibrium, is derived in the long-wave limit of a kinetic equation. In contrast to the Bloch hydrodynamics, theExpand
Equilibrium spin currents: non-Abelian gauge invariance and color diamagnetism in condensed matter.
  • I. Tokatly
  • Physics, Medicine
  • Physical review letters
  • 10 February 2008
It is shown that a magnetic component of this field inevitably generates diamagnetic color currents which are just the equilibrium spin currents discussed in a condensed matter context, which provide an explicit realization of a non-Abelian Landau diamagnetism. Expand