Abstract We consider torsion in parameter manifolds that arises via conformal transformations of the Fisher information metric, and define it for geometry a wide class physical systems. The can be used to differentiate between probability distribution functions otherwise have same scalar curvature hence similar geometries. In context thermodynamic geometry, our construction gives rise new scala...

In the adiabatic perturbation theory, Berry curvature is related to generalized force, and quantum metric tensor linked with energy fluctuation. While former tested numerous numerical results experimental realizations, latter less considered. Quantum Fisher information, key precision measurement, four times tensor. It difficult relate information some physical observable. One interesting candid...

Some situations are discussed where subquantum oscillations in momentum arise in connection with Fisher information and the quantum potential.