Year: 1998
Type: article
Abstract: We investigate the natural occurrence of exponentially small couplings in effective field theories deduced from higher-dimensional models. As a concrete example we calculate the coupling between twisted fields of the Z3 Abelian orbifold compactification of the heterotic string. These are described by an effective field theory coupling the ten-dimensional massless gauge bosons to the four-dimensional twisted fields. The propagation of massive winding modes between the fixed points of the orbifold induces exponentially small couplings between the massless twisted fields. The resulting small couplings have an exponential dependence on the mass of the intermediate states and the distance between the fixed points.
Authors: PH. BRAX, NEIL TUROK
Institution: University of Cambridge
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2058756459