Results 21 to 30 of about 1,164,525 (314)

Partial scaling transform of multiqubit states as a criterion of separability [PDF]

open access: yes, 2005
The partial scaling transform of the density matrix for multiqubit states is introduced to detect entanglement of the quantum state. The transform contains partial transposition as a special case. The scaling transform corresponds to partial time scaling
Man'ko, V. I.   +10 more
core   +1 more source

DENSITY OF STATES METHOD AT FINITE ISOSPIN DENSITY [PDF]

open access: yesModern Physics Letters A, 2004
The density of states method is applied for lattice QCD at a finite isospin density. The advantage of this method is that one can easily obtain results for various values of parameters (quark mass, coupling constant and the number of flavors). We compare results for the chiral condensate and the quark number density with those from the R-algorithm and
openaire   +3 more sources

A theoretical investigation of the interaction of Immucillin-A with N-doped TiO2 anatase nanoparticles: Applications to nanobiosensors and nanocarriers [PDF]

open access: yesNanomedicine Research Journal, 2017
Objective(s): Adsorption of IMMUCILLIN-A (BCX4430) molecule on the pristine and N-doped TiO2 anatase nanoparticles were studied using the density functional theory (DFT) calculations.
Amirali Abbasi, Jaber Jahanbin Sardroodi
doaj   +1 more source

Density of states of disordered systems [PDF]

open access: yesPhysical Review B, 1994
Density of states calculations for the tight-binding model with diagonal disorder are presented. An instanton approach is used to calculate the tails of the spectrum, including all prefactors. It is shown that a Hartree resummation improves the predictions. Furthermore, an effective-medium approximation is used to calculate the density of states in the
van Rossum, Mark   +3 more
openaire   +4 more sources

A Note on the Analyticity of Density of States [PDF]

open access: yesJournal of Statistical Physics, 2012
We consider the $d$-dimensional Anderson model, and we prove the density of states is locally analytic if the single site potential distribution is locally analytic and the disorder is large. We employ the random walk expansion of resolvents and a simple complex function theory trick.
Kaminaga, M., Krishna, M., Nakamura, S.
openaire   +2 more sources

Electronic Band Structure, Density of States, Phase Transitions, Metallization and Superconducting Transition of KBr under High Pressure

open access: yesOrbital: The Electronic Journal of Chemistry, 2020
The results of a full potential linear muffin-tin orbital (FP-LMTO) study on the electronic properties of ionic insulator potassium bromide (KBr) under pressure is presented.
Y. Ramola, Nirmala Louis, A. Amalraj
doaj   +1 more source

Performance of common density functionals for excited states of tetraphenyldibenzoperiflanthene

open access: yes, 2023
Time-dependent density functional theory is the method of choice to efficiently calculate excitation spectra with the functional and basis set choice allowing to compromise between accuracy and computational cost.
Tim, Schrader   +3 more
core   +1 more source

First Principle Calculations for Silver Halides AgBr, AgCl, and AgF

open access: yesARO-The Scientific Journal of Koya University, 2021
Density functional theory (DFT) coupled with ) method are carried out to calculate the electronic structures of AgX (X; Br, Cl, and F). The effect of hybridizing between 4d orbital of Ag element and the p orbitals of the X in the valence band plays a ...
Akram H. Taha
doaj   +1 more source

On the density of states of germanium telluride [PDF]

open access: yesJournal of Applied Physics, 2012
Germanium telluride (GeTe) is one of the most studied phase change materials. Surprisingly, only little is known about the density of states (DOS) in its band gap. In this paper, the DOS of amorphous GeTe films is investigated both experimentally and theoretically. We propose a model for this DOS as well as estimates of some of the transport parameters
Longeaud, Christophe   +5 more
openaire   +5 more sources

Density Functional Tight Binding Calculations for Probing Electronic-Excited States of Large Systems

open access: yes, 2022
This review focuses on the application of Density Functional Tight Binding (DFTB) to electronic-excited states, which has attracted significant attention for extending the computationally efficient approach to the time domain.
Bryan, Wong   +2 more
core   +1 more source

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