نتایج جستجو برای: symmetry element
تعداد نتایج: 287481 فیلتر نتایج به سال:
The change in phase factor of the wavefunction does not affect the absolute value of the matrix element, but does change the phase factor of the off-diagonal matrix element. This phase dependence causes a serious confusion in the sign of some parameters in the molecular Hamiltonian, which appear only in the off-diagonal matrix element; for example, the sign of the /-type doubling constant q of ...
In this paper, we study the stability and accuracy of adaptive finite element methods for the convection-dominated convection-diffusion-reaction problem in the twodimension space. Through various numerical examples on a type of layer-adapted grids (Shishkin grids), we show that the mesh adaptivity driven by accuracy alone cannot stabilize the scheme in all cases. Furthermore the numerical appro...
The concept of symmetry is of central importance in modern physics. Plenty information can be extracted from the symmetry of a physical system. In field theory, the symmetry plays an essential role in defining some very basic concept like particle, charge, etc. Symmetry also put strong constraint on the properties of fields/particles, as well as their interactions and correlations. In quantum f...
A mixed finite element method with reduced symmetry for the standard model in linear viscoelasticity
We introduce and analyze a new mixed finite element method with reduced symmetry for the standard linear model in viscoelasticity. Following previous approach employed elastodynamics, present problem is formulated as second-order hyperbolic partial differential equation which, after using motion to eliminate displacement unknown, stress tensor remains main variable be found. The resulting varia...
Improved magnetic characters of graphene oxides besides its unique biocompatibility make this compound as a theranostics agent could be so practical in the medicine fields. Oxygen functionalities with disturbing the symmetry of graphene sublattices could induce magnetic moments and improve magnetic properties in these structures. While that, vacancies and distortions, created by oxygen release...
We review the conformal symmetry group and investigate the isomorphism between the conformal group and O( D,2 ) . We study the classically conformal invariant scalar theory in D -dimensions with a non-positive potential . We solve the equations of motion by assigning O(D-1, 2)symmetry to the classical solutions with broken translational symmetry in all directions. Then we consider a six d...
The images are used as the element that is primary of in multitudinous operations and dupe- move phony considerably to induce forged by manipulating content digital images. With advancement various image editing software Photoshop including Draw, GIMP, etc make it's easier manipulate Thus, Copy- Move Forgery Detection a task challenging. Some discovery styles analogous Symmetry predicated featu...
We calculate the Isgur-Wise function by measuring the elastic scattering amplitude of a D meson in the quenched approximation on a 24 3 48 lattice at = 6:2, using an O(a)-improved fermion action. We use this result, in conjunction with heavy-quark symmetry, to extract jV cb j from the experimentally measured B ! D l diierential decay width. Heavy-quark symmetry enables all the non-pertur-bative...
We derive a nice representation for point symmetry transformations of the (1+1)-dimensional linear heat equation and properly interpret them. This allows us to prove that pseudogroup these has exactly two connected components. That is, admits single independent discrete symmetry, which can be chosen alternating sign dependent variable. introduce notion pseudo-discrete elements Lie group show sp...
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