Results 21 to 30 of about 4,862,998 (353)

Excited states of holographic superconductors

open access: yesJournal of High Energy Physics, 2020
In this paper we re-investigate the model of the anti-de Sitter gravity coupled to Maxwell and charged scalar fields, which has been studied as the gravitational dual to a superconductor for a long time since the famous work [Phys. Rev. Lett.
Yong-Qiang Wang   +4 more
doaj   +1 more source

Hyperridge of triply excited states [PDF]

open access: yesPhysical Review A, 1988
We present a theory for the definition and the reliable calculation of correlated wave functions of a special class of triply excited states and for their rigorous geometrical analysis. This class is named the three-electron ionization ladder (THEIL) and refers to the simultaneous excitation of three electrons in valence states near threshold ...
Νικολαΐδης, Κλεάνθης A.   +3 more
openaire   +3 more sources

A model electronic Hamiltonian to describe low-lying d–d and metal-to-ligand charge-transfer excited states of [Fe(bpy)3]^2+ [PDF]

open access: yes, 2020
A simple practical method to compute both d–d and metal‐to‐ligand charge‐transfer (MLCT) excited states of iron(II) polypyridyl complexes is proposed for use in simulation studies. Specifically, a model electronic Hamiltonian developed previously for d–d
Iuchi, Satoru   +3 more
core   +1 more source

Prospects for Neutron Reactions on Excited States in High-Density Plasmas

open access: yesFrontiers in Physics, 2022
With the reactions of high flux neutrons, such as in a DT plasma, there is a prospect of seeing new kinds of neutron-nucleus reactions for the first time.
Ian J. Thompson
doaj   +1 more source

Targeted excited state algorithms [PDF]

open access: yesThe Journal of Chemical Physics, 2007
To overcome the limitations of the traditional state-averaging approaches in excited state calculations, where one solves and represents all states between the ground state and excited state of interest, we have investigated a number of new excited state algorithms. Building on the work of van der Vorst and Sleijpen [SIAM J. Matrix Anal. Appl. 17, 401 (
Dorando, Jonathan J.   +2 more
openaire   +4 more sources

Excited states of holographic superconductors with hyperscaling violation

open access: yesNuclear Physics B, 2022
We employ the numerical and analytical methods to study the effects of the hyperscaling violation on the ground and excited states of holographic superconductors for d=2,z=2.
Shuhang Zhang   +3 more
doaj   +1 more source

Electronically Excited States of Potential Interstellar, Anionic Building Blocks for Astrobiological Nucleic Acids

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Functionalizing deprotonated polycyclic aromatic hydrocarbon (PAH) anion derivatives gives rise to electronically excited states in the resulting anions.
Taylor J. Santaloci    +2 more
doaj   +1 more source

Excited states of holographic superconductors with backreaction

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this paper we investigate the model of the anti-de Sitter gravity coupled to a Maxwell field and a free, complex scalar field, and construct a fully back-reacted holographic model of superconductor with excited states.
Yong-Qiang Wang   +3 more
doaj   +1 more source

3d-d Excited States of Ni(II) Complexes Relevant to Photoredox Catalysis: Spectroscopic Identification and Mechanistic Implications.

open access: yesJournal of the American Chemical Society, 2020
Synthetic organic chemistry has seen major advances due to the merger of nickel and photoredox catalysis. A growing number of Ni-photoredox reactions are proposed to involve generation of excited nickel species, sometimes even in the absence of a ...
Stephen I Ting   +6 more
semanticscholar   +1 more source

Excited state orbital optimization via minimizing the square of the gradient: General approach and application to singly and doubly excited states via density functional theory. [PDF]

open access: yesJournal of Chemical Theory and Computation, 2019
We present a general approach to converge excited state solutions to any quantum chemistry orbital optimization process, without the risk of variational collapse.
D. Hait, M. Head‐Gordon
semanticscholar   +1 more source

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