2 papers
physics.gen-ph2026
Primordial Magnetogenesis from Killing Vector Fields
Nagabhushana Prabhu
Papapetrou showed that the covariant derivative of a Killing vector field satisfies Maxwell's equations in vacuum. We extend Papapetrou's result to show that the covariant derivati…
hep-th2026
Static Solitons in an Expanding Universe
Nagabhushana Prabhu
We show, analytically, that a static sine-Gordon soliton cannot exist in 1 + 1 non-dynamical de Sitter spacetime if , where is the mass parameter of the sine-G…