Notes on The Feynman Checkerboard Problem

TL;DR

This paper compares two methods of the Feynman checkerboard problem, a path integral approach to the Dirac equation in 1+1 dimensions, providing insights and reconciliation of different approaches.

Contribution

It reconciles two existing approaches to the Feynman checkerboard problem, offering clearer physical insights into the path integral formulation of the Dirac equation.

Findings

Reconciliation of two approaches to the checkerboard problem

Enhanced understanding of the path integral method for Dirac equation

Physical insights derived from the comparison

Abstract

The Feynman checkerboard problem is an interesting path integral approach to the Dirac equation in `1+1' dimensions. I compare two approaches reported in the literature and show how they may be reconciled. Some physical insights may be gleaned from this approach.