Results 11 to 20 of about 673,928 (292)
Corner Symmetry and Quantum Geometry
, 2023 By virtue of the Noether theorems, the vast gauge redundancy of general relativity provides us with a rich algebra of boundary charges that generate physical symmetries. These charges are located at codimension-2 entangling surfaces called corners.
Freidel, Laurent +2 more
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Geometries with the Second Poincaré Symmetry [PDF]
Communications in Theoretical Physics, 2012 The second Poincar kinematical group serves as one of new ones in addition to the known possible kinematics. The geometries with the second Poincar symmetry is presented and their properties are analyzed. On the geometries, the new mechanics based on the principle of relativity with two universal constants $(c,l)$ can be established.
Huang, Chao-Guang +4 more
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Global Geometry of Bayesian Statistics
Entropy, 2020 In the previous work of the author, a non-trivial symmetry of the relative entropy in the information geometry of normal distributions was discovered. The same symmetry also appears in the symplectic/contact geometry of Hilbert modular cusps. Further, it
Atsuhide Mori
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Topologically protected optical signal processing using parity–time-symmetric oscillation quenching
Nanophotonics, 2021 The concept of topology is universally observed in various physical objects when the objects can be described by geometric structures. Although a representative example is the knotted geometry of wavefunctions in reciprocal space for quantum Hall family ...
Yu Sunkyu, Piao Xianji, Park Namkyoo
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Metric-Affine Geometries with Spherical Symmetry [PDF]
Symmetry, 2020 We provide a comprehensive overview of metric-affine geometries with spherical symmetry, which may be used in order to solve the field equations for generic gravity theories which employ these geometries as their field variables. We discuss the most general class of such geometries, which we display both in the metric-Palatini formulation and in the ...
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WKB Approximation in Noncommutative Gravity [PDF]
, 2007 We consider the quasi-commutative approximation to a noncommutative geometry defined as a generalization of the moving frame formalism. The relation which exists between noncommutativity and geometry is used to study the properties of the high-frequency ...
Buric, Maja +2 more
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Trineodymium(III) pentairon(III) dodecaoxide, Nd3Fe5O12
Acta Crystallographica Section E, 2009 The title compound, Nd3Fe5O12 (NdIG), has an iron garnet structure. One of the Fe atoms is coordinated by six O atoms in a slightly distorted octahedral geometry and has overline{3} site symmetry.
Takashi Komori +4 more
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Geometry of Invariant Tori of Certain Integrable Systems with Symmetry and an Application to a Nonholonomic System [PDF]
, 2007 Bifibrations, in symplectic geometry called also dual pairs, play a relevant role in the theory of superintegrable Hamiltonian systems. We prove the existence of an analogous bifibrated geometry in dynamical systems with a symmetry group such that the ...
Fassò, Francesco, Giacobbe, Andrea
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Symmetry breaking via internal geometry
International Journal of Mathematics and Mathematical Sciences, 2005 Gauge theories commonly employ complex vector-valued fields to reduce symmetry groups through the Higgs mechanism of spontaneous symmetry breaking.
Andrew Talmadge
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Evolution of Axially Symmetric Anisotropic Sources in $f(R,T)$ Gravity [PDF]
, 2015 We discuss the dynamical analysis in $f(R,T)$ gravity (where $R$ is Ricci scalar and $T$ is trace of energy momentum tensor) for gravitating sources carrying axial symmetry.
Noureen, Ifra, Zubair, M.
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