نتایج جستجو برای: atomic hamiltonian

تعداد نتایج: 122491  

Journal: :Physica Status Solidi B-basic Solid State Physics 2023

CdTe is II-VI semiconductor material with excellent characteristics and has demonstrated promising potential for application in the photovoltaic field. The electronic properties of Cd43Te28 microporous structures have been investigated based on density functional theory. newly established binding-energy bond-charge model used to convert value Hamiltonian into bonding values. We provide a method...

2000
V. Barger Kingman Cheung

The recent measurement of atomic parity violation in cesium atoms shows a 2.3σ deviation from the standard model prediction. We show that such an effect can be explained by four-fermion contact interactions with specific chiralities or by scalar leptoquarks which couple to the left-handed quarks. For a coupling of electromagnetic strength, the leptoquark mass is inferred to be 1.1 to 1.3 TeV. W...

2015
R. Carretero-González T. Kolokolnikov

In the present work, we motivate and explore the dynamics of a dissipative variant of the nonlinear Schrödinger equation under the impact of external rotation. As in the well established Hamiltonian case, the rotation gives rise to the formation of vortices. We show, however, that the most unstable mode leading to this instability scales with an appropriate power of the chemical potential μ of ...

2015
R. CARRETERO-GONZÁLEZ

In the present work, we motivate and explore the dynamics of a dissipative variant of the nonlinear Schrödinger equation under the impact of external rotation. As in the well established Hamiltonian case, the rotation gives rise to the formation of vortices. We show, however, that the most unstable mode leading to this instability scales with an appropriate power of the chemical potential μ of ...

2013
K. Kośmider J. W. González J. Fernández-Rossier José Veiga

We study the conduction band spin splitting that arises in transition metal dichalcogenide (TMD) semiconductor monolayers such as MoS2, MoSe2, WS2, and WSe2 due to the combination of spin-orbit coupling and lack of inversion symmetry. Two types of calculation are done. First, density functional theory (DFT) calculations based on plane waves that yield large splittings, between 3 and 30 meV. Sec...

2004
Chang Q. Sun H. L. Bai S. Li B. K. Tay E. Y. Jiang

Consistent insight into the size-enhanced E4f -level shift and the size-suppressed melting point of Au nanosolids has been obtained based on the bond order-length-strength (BOLS) correlation mechanism [Sun et al., Acta Mater. 51 (2003) 4631]. Consistency between theory predictions and observations reveals that the atomic-coordination number (CN)-imperfection induced bond contraction and the ass...

Journal: :The Journal of chemical physics 2005
Timothy J Giese Darrin M York

The present work outlines a new method for treatment of charge-dependent polarizability in semiempirical quantum models for use in combined quantum-mechanical/molecular mechanical simulations of biological reactions. The method addresses a major shortcoming in the performance of conventional semiempirical models for these simulations that is tied to the use of a localized minimal atomic-orbital...

Journal: :Reports on progress in physics. Physical Society 2016
Erez Zohar J Ignacio Cirac Benni Reznik

Can high-energy physics be simulated by low-energy, non-relativistic, many-body systems such as ultracold atoms? Such ultracold atomic systems lack the type of symmetries and dynamical properties of high energy physics models: in particular, they manifest neither local gauge invariance nor Lorentz invariance, which are crucial properties of the quantum field theories which are the building bloc...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2010
Javier Fernández-Rodríguez Alessandro Mirone Urs Staub

The dependences on energy of the resonant soft x-ray Bragg diffraction intensities in DyB(2)C(2) for the (00½) reflection at the Dy M(4,5) edges have been calculated with an atomic multiplet Hamiltonian including the effect of the crystal field and introducing an intra-atomic quadrupolar interaction between the 3d core and 4f valence shell. These calculations are compared with experimental resu...

Journal: :transactions on combinatorics 2012
rushengul hoshur elkin vumar

in this paper, we investigate a problem of finding natural condition to assure the product of two graphs to be hamilton-connected. we present some sufficient and necessary conditions for $gbox h$ being hamilton-connected when $g$ is a hamilton-connected graph and $h$ is a tree or $g$ is a hamiltonian graph and $h$ is $k_2$.

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