Dirac matrix(redirected from Gamma matrices)
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Dirac matrix[di′rak ′mā‚triks]
Any one of four matrices, designated γμ(μ = 1, 2, 3, 4), each having four rows and four columns and satisfying γμγv+ γvγμ= δμ v , where δμ v is the Kronecker delta function, which matrices operate on the four-component wave function in the Dirac equation. Also known as gamma matrix.