- #1
spaghetti3451
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In the representation theory of Lorentz transformations, the words Clifford algebra and Dirac algebra are used interchangeably. However, there is a distinction between the two. Indeed, the Dirac algebra is the particular Clifford algebra ##Cl_{4}({\bf{C}})\equiv Cl_{1,3}({\bf{C}})## with a basis generated by the matrices ##\gamma^{\mu}## called Dirac matrices which have the property that ##\{\gamma^{\mu},\gamma^{\nu}\}=2g^{\mu\nu}##.
On the other hand, the spinor representation of the Lorentz algebra can be obtained using the Dirac matrices which obey the Dirac algebra. The above is a qualitative picture of the key difference between the Clifford algebra, Dirac algebra and the Lorentz algebra.
Can someone please flesh out the mathematical details?
On the other hand, the spinor representation of the Lorentz algebra can be obtained using the Dirac matrices which obey the Dirac algebra. The above is a qualitative picture of the key difference between the Clifford algebra, Dirac algebra and the Lorentz algebra.
Can someone please flesh out the mathematical details?