A spinor representation is a representation of a Spin group, or infinitesimally of a Special orthogonal Lie algebra, constructed from a Clifford algebra. In even dimensions it can split into two chiral spinor representations.
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The Spin group is a type of mathematical group that plays a key role in the field of theoretical physics and geometry, particularly in the study of rotations and angular momentum in quantum mechanics and the theory of relativity. 1. **Definition**: The Spin group, often denoted as \( \text{Spin}(n) \), is the double cover of the special orthogonal group \( \text{SO}(n) \).