Results 21 to 30 of about 2,681,911 (377)
Radiative Corrections as the Origin of Spontaneous Symmetry Breaking [PDF]
, 1973 We investigate the possibility that radiative corrections may produce spontaneous symmetry breakdown in theories for which the semiclassical (tree) approximation does not indicate such breakdown.
E. Weinberg
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Physical Review Letters, 2020 The low-lying spectra of atomic nuclei display diverse behaviors, for example rotational bands, which can be described phenomenologically by simple symmetry groups such as spatial SU(3). This leads to the idea of dynamical symmetry, where the Hamiltonian commutes with the Casimir operator(s) of a group, and is block-diagonal in subspaces defined by the
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Symmetry impedes symmetry discrimination
Journal of Vision, 2005 Objects in the world, natural and artificial alike, are often bilaterally symmetric. The visual system is likely to take advantage of this regularity to encode shapes for efficient object recognition. The nature of encoding a symmetric shape, and of encoding any departure from it, is therefore an important matter in visual perception. We addressed this
Tjan, B., Liu, Z.
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Modern Physics Letters A, 2000 We introduce the notion of a topological symmetry as a quantum mechanical symmetry involving a certain topological invariant. We obtain the underlying algebraic structure of the ℤ2-graded uniform topological symmetries of types (1, 1) and (2, 1). This leads to a novel derivation of the algebras of supersymmetry and p = 2 parasupersymmetry.
Mostafazadeh, A., Samani, K. Aghababaei
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Mathematics, 2020 In this article, we examine a (3+1)-dimensional generalized breaking soliton equation which is highly applicable in the fields of engineering and nonlinear sciences.
Chaudry Masood Khalique +1 more
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Topological insulators with inversion symmetry [PDF]
, 2006 Topological insulators are materials with a bulk excitation gap generated by the spin-orbit interaction that are different from conventional insulators. This distinction is characterized by ${Z}_{2}$ topological invariants, which characterize the ground ...
L. Fu, C. Kane
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Journal of Nonlinear Mathematical Physics, 2002 We introduce the notion of a ghost characteristic for nonlocal differential equations. Ghosts are essential for maintaining the validity of the Jacobi identity for the charateristics of nonlocal vector fields.
Olver, P.J., Sanders, J.A., Wang, J.P.
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Exact Solutions and Conservation Laws of the Drinfel’d-Sokolov-Wilson System
Abstract and Applied Analysis, 2014 We study the Drinfel'd-Sokolov-Wilson system, which was introduced as a model of water waves. Firstly we obtain exact solutions of this system using the (G′/G)-expansion method.
Catherine Matjila +2 more
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PT-symmetry broken by point-group symmetry [PDF]
, 2013 We discuss a PT-symmetric Hamiltonian with complex eigenvalues. It is based on the dimensionless Schr\"{o}dinger equation for a particle in a square box with the PT-symmetric potential $V(x,y)=iaxy$.
Cotton F. A. +4 more
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Exact solutions of equal-width equation and its conservation laws
Open Physics, 2019 In this work we investigate the equal-width equation, which is used for simulation of (1-D) wave propagation in non-linear medium with dispersion process.
Khalique Chaudry Masood +2 more
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