2 papers
gr-qc2026
Spin-torsion interaction and geodesic bending
Sagar Kumar Maity, Amitabha Lahiri
The intrinsic spin of fermions induces torsion in spacetime, leading to an effective four-fermion interaction. This affects the bending of null and timelike geodesics inside a star…
gr-qc2024
Torsional four-fermion interaction and the Raychaudhuri equation
Shibendu Gupta Choudhury, Sagar Kumar Maity, Amitabha Lahiri
Intrinsic spin of fermions can generate torsion in spacetime. This torsion is a non-propagating field that can be integrated out, leaving an effective non-universal four-fermion in…