Generalized Uncertainty Principle from the Regularized Self-Energy

TL;DR

This paper derives a generalized uncertainty principle (GUP) from regularized self-energy calculations using string T-duality, revealing spin-dependent forms of GUP for bosons and fermions, which may inform quantum gravity research.

Contribution

It introduces a novel derivation of GUP from regularized self-energy considering string T-duality effects, highlighting spin-dependent GUP forms.

Findings

Quadratic GUP for bosons (spin 0 and 1)

Linear GUP for fermions (spin 1/2)

Correlation between particle spin and GUP form

Abstract

We use the Schr\"odinger--Newton equation to calculate the regularized self-energy of the particle using a regular self-gravitational and electrostatic potential derived in the string T-duality. The particle mass $M$ is no longer concentrated into a point but it is diluted and described by a quantum-corrected smeared energy density resulting in corrections to the energy of the particle which is interpreted as a regularized self-energy. We extend our results and find corrections to the relativistic particles using the Klein-Gordon, Proca, and Dirac equations. An important finding is that we extract a form of generalized uncertainty principle (GUP) from the corrected energy. The form of GUP is shown to depend on the nature of particles; namely, for bosons (spin $0$ and spin $1$) we obtain a quadratic form of GUP, while for fermions (spin $1/2$) we obtain a linear form of GUP. The correlation we found between spin and GUP may offer insights into investigating quantum gravity.