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Interacting-Bath Dynamical Embedding for Capturing Nonlocal Electron Correlation in Solids.
Phys Rev Lett
November 2024
Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
Quantitative simulation of electronic structure of solids requires treating local and nonlocal electron correlations on an equal footing. We present a new ab initio formulation of Green's function embedding which, unlike dynamical mean-field theory that uses noninteracting bath, derives bath representation with general two-particle interactions in a systematically improvable manner. The resulting interacting-bath dynamical embedding theory (ibDET) utilizes an efficient real-axis coupled-cluster solver to compute the self-energy, approaching the full system limit at much reduced cost.
View Article and Find Full Text PDFHadron-ion collisions in Pythia and the vector-meson dominance model for photoproduction.
Eur Phys J C Part Fields
November 2024
Department of Physics, University of Jyvaskyla, P.O. Box 35, Fl-40014 Jyvaskyla, Finland.
Article Synopsis
- The extension of the Pythia Monte Carlo event generator allows for detailed simulations of collisions between a hadron beam and nuclear targets, with energy variations for each event.
- The work builds on existing models like Angantyr for heavy ions and includes a vector-meson dominance (VMD) model for simulating real photon interactions in photo-nuclear collisions.
- Validation with HERA data shows the model's effectiveness, and the generated events for ultra-peripheral heavy-ion collisions at the LHC align with ATLAS measurements, demonstrating consistency in single-particle multiplicity and azimuthal anisotropy patterns.
Mutual information sums and relations with interaction energies in N-particle quantum systems.
Phys Rev E
September 2024
Departamento de Química, , Avenida Ferrocarril San Rafael Atlixco No. 186, Leyes de Reforma 1a Sección, Iztapalapa, 09310 Ciudad de México, México.
The sums of position- and momentum-space mutual information measures are used to examine the pairwise and higher-order statistical correlation in the ground states of N-particle coupled oscillators. Analytical expressions for these measures are shown to be related to the logarithmic interaction energies of these states, plus those of mirror states where the intensities of the one- and two-body potentials are interchanged, and the nature of the attractive or repulsive interaction is opposite to that in the original state. The measures separate the contributions from the interactions and those from the effective interactions due to marginalization into different terms.
View Article and Find Full Text PDFA search for collective effects inside jets produced in proton-proton collisions is performed via correlation measurements of charged particles using the CMS detector at the CERN LHC. The analysis uses data collected at a center-of-mass energy of sqrt[s]=13 TeV, corresponding to an integrated luminosity of 138 fb^{-1}. Jets are reconstructed with the anti-k_{T} algorithm with a distance parameter of 0.
View Article and Find Full Text PDFFloquet engineering of interparticle correlations in electron-hole few-body system for strong radial confinement.
J Phys Condens Matter
October 2024
AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Cracow, Poland.
We investigate the effects of off-resonant THz-frequency laser light coupling to bound few-body electron-hole system, i.e. the exciton and negatively charged trion confined in quantum wire.
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