rotation group SU(2)

E443145

The rotation group SU(2) is the Lie group of 2×2 unitary matrices with determinant 1 that serves as the double cover of the three-dimensional rotation group SO(3) and underlies the quantum theory of angular momentum and spin.

All labels observed (7)

How this entity was disambiguated

Statements (58)

Predicate Object
instanceOf Lie algebra ⓘ
Lie group ⓘ
compact Lie group ⓘ
matrix group ⓘ
real 3-dimensional manifold ⓘ
semisimple Lie group ⓘ
simple Lie group ⓘ
simply connected Lie group ⓘ
special unitary group ⓘ
actsOn spinor states ⓘ
appearsIn gauge theories ⓘ
particle physics ⓘ
representation theory of Lie groups ⓘ
centerIsIsomorphicTo Z/2Z ⓘ
coveringMapDegree 2 ⓘ
covers SO(3) ⓘ
fundamentalRepresentationCalled spin-1/2 representation ⓘ
hasCartanSubalgebraDimension 1 ⓘ
hasCenter {±I} ⓘ
hasCoveringMapTo SO(3) ⓘ
hasDefinition group of 2×2 unitary matrices with determinant 1 ⓘ
hasDeterminantCondition determinant 1 ⓘ
hasDimension 3 ⓘ
hasDynkinType A1 ⓘ
hasFundamentalGroup Z/2Z ⓘ
trivial group ⓘ
hasFundamentalRepresentationDimension 2 ⓘ
hasHaarMeasure finite ⓘ
hasIrreducibleRepresentationsLabeledBy nonnegative half-integers j ⓘ
hasLieAlgebra su(2) ⓘ
hasMatrixSize 2×2 ⓘ
hasMaximalTorus U(1) ⓘ
hasRank 1 ⓘ
hasRealForm compact real form of A1 ⓘ
hasRepresentationDimensionFormula 2j+1 ⓘ
hasRootSystem type A1 ⓘ
hasUnitarityCondition U†U = I ⓘ
hasWeylGroup Z/2Z ⓘ
isCompact true ⓘ
isCompactRealFormOf SL(2,C) ⓘ
isConnected true ⓘ
isDiffeomorphicTo S^3 ⓘ
isDoubleCoverOf SO(3) ⓘ
isGaugeGroupOf weak isospin in the Standard Model ⓘ
isIsomorphicTo Spin(3) ⓘ
so(3) ⓘ
unit quaternions ⓘ
isLocallyIsomorphicTo SO(3) ⓘ
isNonAbelian true ⓘ
isSimple true ⓘ
isSimplyConnected true ⓘ
isSpinGroupFor R^3 ⓘ
isSubgroupOf SL(2,C) ⓘ
isTopologically 3-sphere S^3 ⓘ
linked to: Hopf fibration
isUniversalCoverOf SO(3) ⓘ
quotientByCenterIs SO(3) ⓘ
underliesTheory quantum angular momentum ⓘ
quantum spin ⓘ

How these facts were elicited

Referenced by (17)

Full triples — surface form annotated when it differs from this entity's canonical label.

Wigner–Eckart theorem → involves → rotation group SU(2) ⓘ
Gruppentheorie und Quantenmechanik → relatedConcept → special unitary group SU(2) ⓘ
linked to: rotation group SU(2)
Pauli matrices → relatedConcept → SU(2) ⓘ
linked to: rotation group SU(2)
Yang–Mills existence and mass gap problem → typicalGaugeGroup → SU(2) ⓘ
linked to: rotation group SU(2)
SO(3) → universalCover → SU(2) ⓘ
subject linked to: rotation group SO(3)
linked to: rotation group SU(2)
SL(2,C) → hasMaximalCompactSubgroup → SU(2) ⓘ
linked to: rotation group SU(2)
SL(2,C) → containsSubgroup → SU(2) ⓘ
linked to: rotation group SU(2)
SL(2,C) → isIsomorphicTo → Spin^+(3,1) ⓘ
linked to: rotation group SU(2)
Yang–Mills theory → usesSymmetryGroup → SU(2) ⓘ
linked to: rotation group SU(2)
Clebsch–Gordan coefficients → relatedTo → SU(2) Lie group ⓘ
linked to: rotation group SU(2)
Yang monopole → gaugeGroup → SU(2) ⓘ
linked to: rotation group SU(2)
SU(2) → isIsomorphicTo → Spin(3) ⓘ
subject linked to: rotation group SU(2)
linked to: rotation group SU(2)
SO(3) → isDoubleCoveredBy → SU(2) ⓘ
subject linked to: special orthogonal group SO(n)
linked to: rotation group SU(2)
Georgi–Glashow SU(5) grand unified theory → containsSubgroup → SU(2) ⓘ
linked to: rotation group SU(2)
SU(n) → specialCase → SU(2) is diffeomorphic to the 3-sphere S³ ⓘ
subject linked to: special unitary group SU(n)
linked to: rotation group SU(2)
Hopf fibration → hasTotalSpaceIdentifiedWith → SU(2) ⓘ
linked to: rotation group SU(2)
BPST instanton → gaugeGroup → SU(2) ⓘ
linked to: rotation group SU(2)