On Padmanabhan's duality invariance and the quantum of length

P. Fernandez de Cordoba, J. M. Isidro, A. Pereira Garcia

We provide a field-theoretic construction of Padmanabhan's duality-invariant Feynman propagator for a massive point particle in Euclidean space ${\mathbb{R}}^D$. Padmanabhan's propag…