The Hyperbolic Spinor Representation of Transformations in R13 by Means of Split Quaternions

In this study, firstly, we give a different approach to the relationship between the split quaternions and rotations in Minkowski space R13. In addition, we obtain an automorphism of the split quaternion algebra H′ corresponding to a rotation in R13. Then, we give the relationship between the hyperbolic spinors and rotations in R13. Finally, we associate to a split quaternion with a hyperbolic spinor by means of a transformation. In this way, we show that the rotation of a rigid body in the Minkowski 3-space R13 expressed the split quaternions can be written by means of the hyperbolic spinors with two hyperbolic components. So, we obtain a new and short representation (hyperbolic spinor representation) of transformation in the 3-dimensional Minkowski space R13 expressed by means of split quaternions. © 2018, Springer International Publishing AG, part of Springer Nature.