An Alternative to Matter Localization in the "Brane World": An Early Proposal and its Later Improvements

TL;DR

This paper proposes a model where our universe is a 3-brane in higher dimensions, with matter emerging from brane intersections, and discusses improvements addressing matter confinement issues.

Contribution

It introduces a brane-world model based on Dirac-Nambu-Goto action and explores matter as intersections, with subsequent enhancements to address confinement problems.

Findings

Matter arises from brane intersections as point particles.

Intersections follow geodesics on the brane worldsheet.

Model offers a solution to matter confinement on the brane.

Abstract

Here we place the Latex typeset of the paper M. Pavsic, Phys. Lett. A116 (1986) 1-5. In the paper we presented the picture that our spacetime is a 3-brane moving in a higher dimensional space. The dynamical equations were derived from the action which is just that for the usual Dirac-Nambu-Goto $p$-brane. We also considered the case where not only one, but many branes of various dimensionalities are present, and showed that their intersections with the 3-brane manifest as matter in 4-dimensional spacetime. We considered a particular case, where the intersections behaved as point particles, and found out that they follow the geodesics on the 3-brane worldsheet (identified with our spacetime). In a series of subsequent papers the original idea has been further improved and developped. This is discussed in a note at the end, where it is also pointed out that such a model resolves the problem of massive matter confinement on the brane, recently discussed by Rubakov et al. and Mueck et al.