TL;DR
This paper explores how M-theory branes can give rise to low-energy gauge theories resembling the Standard Model, including matter content and charge assignments, advancing string phenomenology.
Contribution
It demonstrates a natural construction of SU(N_1)×SU(N_2)×U(1) gauge theories with matter from M-theory branes, providing a framework for realistic model building.
Findings
Derived gauge theories from branes with bi-fundamental matter
Showed fractional U(1) charges emerge naturally
Provided a step towards realistic M-theory models
Abstract
We discuss the possibility that the electro-weak and strong interactions arise as the low energy effective description of branes in M-theory. As a step towards constructing such a model we show how one can naturally obtain SU(N_1)\times SU(N_2)\times U(1) gauge theories from branes, including matter in the bi-fundamental representation of SU(N_1)\times SU(N_2) which are fractionally charged under U(1).
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