Results 41 to 50 of about 961,859 (173)
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.
core +2 more sources
Geometric Curvatures of Plane Symmetry Black Hole
Advances in High Energy Physics, 2013 We study the properties and thermodynamic stability of the plane symmetry black hole from the viewpoint of geometry. We find that the Weinhold curvature gives the first-order phase transition at N=1, where N is a parameter of the plane symmetry black ...
Shao-Wen Wei +3 more
doaj +1 more source
Hexakis(dimethyl sulfoxide-κO)cobalt(III) trinitrate
Acta Crystallographica Section E, 2010 The metal atom of the title salt, [Co(C2H6OS)6](NO3)3, is coordinated by six dimethyl sulfoxide molecules in an octahedral geometry. The metal atom lies on a special position of overline{3} site symmetry.
Qiuhong Li, Seik Weng Ng
doaj +1 more source
Local Generalized Symmetries and Locally Symmetric Parabolic Geometries [PDF]
SIGMA 13 (2017), 032, 33 pages, 2016 We investigate (local) automorphisms of parabolic geometries that generalize geodesic symmetries. We show that many types of parabolic geometries admit at most one generalized geodesic symmetry at a point with non-zero harmonic curvature. Moreover, we show that if there is exactly one symmetry at each point, then the parabolic geometry is a ...
arxiv +1 more source
Symmetry breaking, conformal geometry and gauge invariance [PDF]
, 2010 When the electroweak action is rewritten in terms of SU(2) gauge invariant variables, the Higgs can be interpreted as a conformal metric factor. We show that asymptotic flatness of the metric is required to avoid a Gribov problem: without it, the new ...
Anton Ilderton +18 more
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On the coupling of Galilean-invariant field theories to curved spacetime
SciPost Physics, 2018 We consider the problem of coupling Galilean-invariant quantum field theories to a fixed spacetime. We propose that to do so, one couples to Newton-Cartan geometry and in addition imposes a one-form shift symmetry.
Kristan Jensen
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Spin-Flavour Symmetry and Contractions Towards Classical Space-Time Symmetry [PDF]
Int.J.Mod.Phys.A12:147-152,1997, 1996 A classification scheme of hadrons is proposed on the basis of the division algebra H of quaternions and an appropriate geometry. This scheme suggests strongly to understand flavour symmetry in another manner than from standard symmetry schemes. In our approach, we do not start from `exact' symmetry groups like SU(2) \times SU(2) chiral symmetry and ...
arxiv +1 more source
Symmetry notion as a universal principle of design [PDF]
Arhitektura i Urbanizam, 2008 Symmetry is a word that appears in a variety of disciplines over a variety of ages, carries many meanings and has always been in direct relation to the most important notions which explain architectural creativity.
Jadrešin-Milić Renata
doaj
Gauge Symmetry, T-Duality and Doubled Geometry [PDF]
, 2007 String compactifications with T-duality twists are revisited and the gauge algebra of the dimensionally reduced theories calculated. These reductions can be viewed as string theory on T-fold backgrounds, and can be formulated in a `doubled space' in ...
Hull, C. M., Reid-Edwards, R. A.
core +3 more sources
Locally-homogeneous Riemann-Cartan geometries with the largest symmetry group [PDF]
J. Math. Phys. 65, 072502 (2024)The symmetry frame formalism is an effective tool for computing the symmetries of a Riemann-Cartan geometry and, in particular, in metric teleparallel geometries. In the case of non-vanishing torsion in a four dimensional Riemann-Cartan geometry, the Minkowski geometry is the only geometry admitting ten affine frame symmetries. Excluding this geometry,
arxiv +1 more source