Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Molecular Orbital Theory II03:51

Molecular Orbital Theory II

Molecular Orbital Energy Diagrams
Molecular Orbital Theory I02:35

Molecular Orbital Theory I

Overview of Molecular Orbital Theory
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization
Fermi Level Dynamics01:12

Fermi Level Dynamics

The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
Electron Orbital Model01:18

Electron Orbital Model

Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

First Measurement of Time-Dependent CP Violation in the Flavor-Changing Neutral-Current Decay B^{0}→K_{S}^{0}μ^{+}μ^{-}.

Physical review letters·2026
Same author

Measurement of the Top-Quark Production Cross Section and Charge Asymmetry at LHCb.

Physical review letters·2026
Same author

Searches for B^{0}→K^{+}π^{-}τ^{+}τ^{-} and B_{s}^{0}→K^{+}K^{-}τ^{+}τ^{-} Decays.

Physical review letters·2026
Same author

First Evidence of the B_{s}^{0}→K^{-}π^{+}γ Decay.

Physical review letters·2026
Same author

Precision Measurement of CP Violation and Branching Fractions in B^{±}→K_{S}^{0}h^{±} (h=π, K) Decays and Search for the Rare Decay B_{c}^{±}→K_{S}^{0}K^{±}.

Physical review letters·2026
Same author

Characterizing the Impact of Nucleoid-Associated Proteins on HU-DNA Interactions by Live-Cell Single-Molecule Tracking.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026

Related Experiment Video

Updated: May 31, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

Dynamical correlations in multiorbital Hubbard models: fluctuation exchange approximations.

V Drchal1, V Janiš, J Kudrnovský

  • 1Institute of Physics, AS CR, Na Slovance 2, CZ-182 21 Praha 8, Czech Republic.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|June 22, 2011
PubMed
Summary

The fluctuation exchange approximation (FLEX) accurately models multiband systems, unlike in single-band cases. This method, particularly its non-self-consistent version, reveals strong coupling and satellite formation in the degenerate Hubbard model.

More Related Videos

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

Related Experiment Videos

Last Updated: May 31, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

Area of Science:

  • Condensed Matter Physics
  • Quantum Many-Body Theory

Background:

  • The degenerate Hubbard model is crucial for understanding strongly correlated electron systems.
  • Accurate theoretical methods are needed to capture complex phenomena like magnetic ordering and superconductivity.

Purpose of the Study:

  • To investigate the efficacy of the fluctuation exchange approximation (FLEX) for the two-band degenerate Hubbard model.
  • To compare FLEX results with high-accuracy quantum Monte Carlo (QMC) calculations.
  • To explore the impact of self-consistency on FLEX predictions for multiband systems.

Main Methods:

  • Application of both self-consistent and non-self-consistent fluctuation exchange approximation (FLEX) schemes.
  • Utilizing the electron-electron T-matrix approximation with full renormalization of one-particle propagators.
  • Comparison of theoretical results against benchmark quantum Monte Carlo (QMC) data.

Main Results:

  • FLEX, particularly with the T-matrix approximation and full propagator renormalization, shows good agreement with QMC for multiband systems.
  • The non-self-consistent FLEX scheme provides clearer visibility of the crossover to strong coupling and satellite formation.
  • Investigated the behavior of FLEX for systems with higher orbital degeneracy.

Conclusions:

  • The fluctuation exchange approximation is a viable and accurate method for studying multiband Hubbard models.
  • The non-self-consistent FLEX approach offers advantages in visualizing strong correlation effects.
  • Findings provide insights into electron behavior in complex correlated materials.