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Spin connection information


In differential geometry and mathematical physics, a spin connection is a connection on a spinor bundle. It is induced, in a canonical manner, from the affine connection. It can also be regarded as the gauge field generated by local Lorentz transformations. In some canonical formulations of general relativity, a spin connection is defined on spatial slices and can also be regarded as the gauge field generated by local rotations.

The spin connection occurs in two common forms: the Levi-Civita spin connection, when it is derived from the Levi-Civita connection, and the affine spin connection, when it is obtained from the affine connection. The difference between the two of these is that the Levi-Civita connection is by definition the unique torsion-free connection, whereas the affine connection (and so the affine spin connection) may contain torsion.

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Spin connection

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mathematical physics, a spin connection is a connection on a spinor bundle. It is induced, in a canonical manner, from the affine connection. It can also be regarded...

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Spin group

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manifolds: the spin group is the structure group of a spinor bundle. The affine connection on a spinor bundle is the spin connection; the spin connection can simplify...

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Spin network

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Rodolfo Gambini and others. Spin networks can also be used to construct a particular functional on the space of connections which is invariant under local...

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Tetrad formalism

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because Weyl spinors can be very naturally defined on a Riemannian manifold and their natural setting leads to the spin connection. Those spinors take form...

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Dirac equation in curved spacetime

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bundle. To write down the equation we also need the spin connection, also known as the connection (1-)form. The dual frame fields { e μ } {\displaystyle...

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Spinor

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and physics, spinors (/spɪnər/) are elements of a complex number-based vector space that can be associated with Euclidean space. A spinor transforms linearly...

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Fermion

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follows Fermi–Dirac statistics. Fermions have a half-odd-integer spin (spin 1/2, spin 3/2, etc.) and obey the Pauli exclusion principle. These particles...

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Supergravity

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vierbein. The local Lorentz symmetry has a gauge connection associated with it, the spin connection. The following discussion will be in superspace notation...

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Ashtekar variables

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the usual Levi-Civita connection and   Γ a j k   {\displaystyle \ \Gamma _{a\;\;j}^{\;\;k}\ } is the so-called spin connection. Let us take the configuration...

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Dirac spinor

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Riemannian manifolds can have spinors and spin connections built upon them, via the Clifford algebra. The Dirac spinor is specific to that of Minkowski...

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Loop quantum gravity

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{\displaystyle \operatorname {SU} (2)} connection where Γ a i {\displaystyle \Gamma _{a}^{i}} is related to the so-called spin connection via Γ a i = Γ a j k ϵ j k...

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Contorsion tensor

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connection with and without torsion in it. It commonly appears in the study of spin connections. Thus, for example, a vielbein together with a spin connection...

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Spin City

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Spin City is an American sitcom television series that aired from September 17, 1996, to April 30, 2002, on ABC. Created by Gary David Goldberg and Bill...

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Spin Master

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Spin Master Corp. is a Canadian multinational children's toy and entertainment company. Spin Master employs over 1,600 people globally with offices in...

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Causal fermion systems

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S_{x}} endowed with a Lorentzian metric. The spin curvature is defined as the holonomy of the spin connection, R ( x , y , z ) = D x , y D y , z D z , x...

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Nonlinear Dirac equation

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matter with intrinsic angular momentum (spin). This theory removes a constraint of the symmetry of the affine connection and treats its antisymmetric part,...

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Connection form

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and specifically differential geometry, a connection form is a manner of organizing the data of a connection using the language of moving frames and differential...

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Grand Unified Theory

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undiscovered particles, or have gravity-like (spin connection) bosons affecting elements of the particles spin direction. Each of these possesses theoretical...

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Lie derivative

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representation in Lie group theory. Generalisations exist for spinor fields, fibre bundles with a connection and vector-valued differential forms. A 'naïve' attempt...

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Spinning wheel

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machinery such as the spinning jenny and spinning frame, which displaced the spinning wheel during the Industrial Revolution. The basic spinning of yarn involves...

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Dirac operator

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{\displaystyle {\tilde {\Gamma }}} is the spin connection, a lifting of the Levi-Civita connection on M to the spinor bundle over M. The square in this case...

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Weyl transformation

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Levi-Civita connection and associated spin connections are not invariant under Weyl transformations. Weyl connections are a class of affine connections that...

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