We show that Clifford algebras are closely related to the study of isoclinic
subspaces of spinor spaces and, consequently, to the Hurwitz-Radon matrix
problem. Isocliny angles are introduced to parametrize gamma matrices, i.e.,
matrix representations of the generators of finite-dimensional Clifford
algebras C(m,n). Restricting the consideration to the Clifford algebra C(4,0),
this parametrization is then applied to the study of Dirac traces occurring in
Euclidean lattice quantum field theory within the hopping parameter expansion
for Wilson fermions.Comment: 31 pages LaTeX, 2 figure
