In this manuscript we consider a special complex torus, denoted $S_{ \Delta_{ 2k}}$ (for each $k \in \mathbb{ N},\, k \geq 1$) and called the Dirac spinor torus. It is an Abelian variety of complex dimension $2^{ k}$ whose covering space is the space of Dirac spinors, $\Delta_{ 2k}$, for the Clifford algebra $Cl(\mathbb{ C}^{ 2k})$ associated with the vector space $\mathbb{ C}^{ 2k}$. Fixing an isomorphism $\rho:Cl(\mathbb{ C}^{ 2k})\rightarrow End (\Delta_{ 2k})$, we define Clifford multiplication on $S_{ \Delta_{ 2k}}$ as the actions of those endomorphisms in the image of $\rho$ that preserve the full rank lattice. We analyze the properties of that Clifford multiplication on the 2-torsion points of the Dirac spinor torus. We identify the Clifford actions with permutation maps that represent all isomorphism classes of these actions on the group of 2-torsion points. We provide a structure theorem describing these isomorphism classes of Clifford actions in a way that is independent of the choice of representatives. We conclude by extending the scope of our analysis to the group of $n$-torsion points and analyzing the fixed points and translation constants of entry-permuting maps, a broader class of actions of which the Clifford actions on the 2-torsion points of $S_{ \Delta_{ 2k}}$ is a subset.
Categories: math.AG