搜索结果: 31-45 共查到“物理学 density”相关记录152条 . 查询时间(0.198 秒)
Energy density in density functional theory: Application to crystalline defects and surfaces
Energy density density functional theory crystalline defects surfaces
2010/11/25
We propose a method to decompose the total energy of a supercell containing defects into
contributions of individual atoms, using the energy density formalism within density functional
theory. The s...
Charged-particle multiplicity density at mid-rapidity in central Pb-Pb collisions at sqrt(sNN) = 2.76 TeV
Charged-particle multiplicity density mid-rapidity central Pb-Pb collisions sqrt(sNN) 2.76 TeV
2010/12/29
The first measurement of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at a centre-of-mass energy per nucleon pair sqrt(sNN) = 2.76 TeV is presented. For an event sampl...
Lifshitz transition in two-dimensional spin-density wave models
Lifshitz transition two-dimensional spin-density wave models
2010/11/23
We argue that both pocket-disappearing and neck-disrupting types of Lifshitz transitions can be
realized in two-dimensional spin-density wave models for underdoped cuprates, and study both
types of ...
Density-dependent nucleon-nucleon interaction from three-nucleon forces
Density-dependent nucleon-nucleon interaction three-nucleon forces
2011/1/6
Microscopic calculations based on realistic nuclear hamiltonians, while yielding accurate results for the energies of the ground and low-lying excited states of nuclei with A ≤ 12, fail to reproduce t...
Vortex density waves and negative absolute resistance in patterned superconductors
Vortex density waves negative absolute resistance patterned superconductors
2010/11/24
We report the observation of self-assembled density waves of vortices driven in a uperconducting film with a periodic array of cross-shaped obstacles. By performing a series of numerical simulations,w...
Time-Dependent Density Functional Theory for Driven Lattice Gas Systems with Interactions Driven Lattice Gas Systems with Interactions
Time-Dependent Density Functional Theory Driven Lattice Gas Systems
2010/11/23
We present a new method to describe the kinetics of driven lattice gases with particle-particle
interactions beyond hard-core exclusions. The method is based on the time-dependent density
functional...
Density of states in random lattices with translational invariance
Density of states random lattices with translational invariance
2010/11/22
We propose a random matrix approach to describe vibrational excitations in disordered systems.
The dynamical matrix M is taken in the form M = AAT where A is some real (not generally
symmetric) rand...
A density-functional approach on the hexagonal graphene lattice is developed using an exact
numerical solution to the Hubbard model as the reference system. Both nearest-neighbour and up
to third ne...
Theory of Valley-Density Wave and Hidden Order in Iron-Pnictides
Theory of Valley-Density Wave Iron-Pnictides
2010/11/19
In the limit of perfect nesting, the physics of iron-pnictides is governed by the density wave
formation at the zone-edge vector M. At high energies, various spin- (SDW), charge- (CDW),
orbital/pock...
Time-dependent current density functional theory on a lattice
Time-dependent current density functional theory lattice
2010/11/22
A rigorous formulation of time-dependent current density functional theory (TDCDFT) on a
lattice is presented. The density-to-potential mapping and the V-representability problems are
reduced to a s...
Excited electron-bubble states in superfluid helium-4: a time-dependent density functional approach
Excited electron-bubble states time-dependent density functional approach
2010/11/19
We present a systematic study on the excited electron-bubble states in super uid 4He using a
time-dependent density functional approach. For the evolution of the 1P bubble state, two di erent functio...
Surface density of states and topological edge states in non-centrosymmetric superconductors
Surface density of states topological edge states non-centrosymmetric superconductors
2010/11/19
We study Andreev bound state (ABS) and surface density of state (SDOS) of non-centrosymmetric
superconductor where spin-singlet d-wave pairing mixes with spin-triplet p (or f)-wave one by spinorbit c...
Density of states of a graphene in the presence of strong point defects
graphene strong point defects
2010/11/19
The density of states near zero energy in a graphene due to strong point defects with random
positions are computed. Instead of focusing on density of states directly, we analyze eigenfunctions of in...
Spin-Density Wave near the Vortex Cores of Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$
Spin-Density Wave Vortex Cores
2010/11/18
Competition with magnetism is at the heart of high temperature superconductivity, most intensely felt near a vortex core. To investigate vortex magnetism we have developed a spatially resolved probe u...
Time-dependent occupation numbers in reduced-density-matrix functional theory: Correlation-induced oscillations
Time-dependent occupation numbers reduced-density-matrix functional theory
2010/11/18
We prove that if the two-body terms in the equation of motion for the one-body reduced density
matrix are approximated at each instant of time from ground-state functionals, the eigenvalues of the on...