At least six definitions of ''torsion'' appear in the physics literature
complicating the utilization and understanding of the concept. In this article,
the differences and similarities of the various definitions are compared, and
their relationships to spaces of absolute parallelism with applications to
irreversible thermodynamics, coherent structures in plasmas and fluids, and
general relativity are described.
In the download pdf file (see below) the concept of torsion and torsion fields
are investigated. There are at least six different definitions of torsion to be
found in the literature. They include:
Topological Torsion is the concept of highest interest to this web site. If the
1-form of heat, Q, has zero topological torsion, then the process that created
the heat 1-form is thermodynamically reversible.