Nonlinear Hamiltonian analysis of new quadratic torsion theories Part I. Cases with curvature-free constraints

W. E. V. Barker, A. N. Lasenby, M. P. Hobson +1

It was recently found that, when linearised in the absence of matter, 58 cases of the general gravitational theory with quadratic curvature and torsion are (i) free from ghosts and…