Neutrino Oscillation Caused by Spacetime Geometry

Abstract

The effects of gravitational interaction are generally neglected in particle physics. A first-order formulation of gravity is presented to include gravity in the Quantum Mechanical Lagrangian of fermions. It is seen that fermions minimally coupled to gravity give rise to a torsionless effective theory with a quartic interaction. After passing through a thermal background, the most generic form of contortion contributes to neutrino effective mass. This effective mass can change the current oscillation parameters.

Keywords

• Neutrino oscillation
• Non-standard interaction
• Einstein-Cartan-Dirac-Sciama-Kibble theroy
• Torsion
• Chiral Torsion
• First order formulation of gravity