Topic
Symmetry (physics)
About: Symmetry (physics) is a research topic. Over the lifetime, 26435 publications have been published within this topic receiving 500189 citations. The topic is also known as: symmetry (physics) & physical symmetry.
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TL;DR: In this paper, the authors describe a method to project photonic two-qubit states onto the symmetric and antisymmetric subspaces of their Hilbert space using an ancillary coherent state, together with a weak cross-Kerr nonlinearity.
Abstract: We describe a method to project photonic two-qubit states onto the symmetric and antisymmetric subspaces of their Hilbert space. This device utilizes an ancillary coherent state, together with a weak cross-Kerr nonlinearity, generated, for example, by electromagnetically induced transparency. The symmetry analyzer is nondestructive, and works for small values of the cross-Kerr coupling. Furthermore, this device can be used to construct a nondestructive Bell-state detector.
272 citations
TL;DR: Using Lie group theory and canonical transformations, the general theory is presented, used to show that localized nonlinearities can support bound states with an arbitrary number solitons, and discussed other applications of interest to the field of nonlinear matter waves.
Abstract: Using Lie group theory and canonical transformations, we construct explicit solutions of nonlinear Schrodinger equations with spatially inhomogeneous nonlinearities. We present the general theory, use it to show that localized nonlinearities can support bound states with an arbitrary number solitons, and discuss other applications of interest to the field of nonlinear matter waves.
271 citations
270 citations
TL;DR: Gell-Mann as discussed by the authors introduced a theory of the components of strong interactions involving a new symmetry, called "unitary symmetry," and used this symmetry to express the magnetic moments of all the baryons in terms of those of the neutron and proton.
Abstract: Gell-Mann(1) recently introduced a theory of the components of
strong interactions involving a new symmetry,
called "unitary symmetry." The principal purpose of this note is to use this symmetry to express the magnetic moments of all the baryons in terms of those of the neutron and proton. We also derive a relation among baryon electromagnetic mass splittings.
268 citations
TL;DR: In this article, the authors study the complex phases of self-assembling polymer systems starting from standard model polymer Hamiltonians and show that the free energy of ordered phases with any symmetry can be computed within self-consistent field theory.
Abstract: Recent advances in the application of self-consistent field theory permit the calculation of the free energy of ordered phases with any symmetry. Hence it is now possible to study, within this theory, the complex phases of self-assembling polymer systems starting from standard model polymer Hamiltonians.
268 citations