Demystifying stringy miracles with eclectic flavor symmetries

TL;DR

This paper explains how certain selection rules in heterotic orbifold string theories can be understood through a combination of modular and traditional flavor symmetries, within the eclectic flavor framework, clarifying their origin.

Contribution

It demonstrates that specific string-derived selection rules can be interpreted via the interplay of modular and flavor symmetries, advancing the understanding of symmetry constraints in string effective field theories.

Findings

Selection rules are explained by eclectic flavor symmetries.

Modular and traditional symmetries interplay explains string constraints.

Provides a unified symmetry perspective on string selection rules.

Abstract

Effective field theories arising from string compactifications are subject to constraints originating from the duality transformations of string theory. Interpreting these so-called selection rules in terms of conventional symmetries has remained challenging. We show that particular selection rules in heterotic orbifolds can be explained from a subtle interplay between modular and traditional flavor symmetries within the eclectic flavor framework.