Year: 2001
Type: article
Abstract: We reconsider the origin of $\mathrm{CP}$ violation in fundamental theory. Existing string models of spontaneous $\mathrm{CP}$ violation make ambiguous predictions, due to the arbitrariness of $\mathrm{CP}$ transformation and the apparent noninvariance of the results under duality. We find a modular$\mathrm{CP}$ invariance condition, applicable to any predictive model of spontaneous $\mathrm{CP}$ violation, which circumvents these problems; it strongly constrains $\mathrm{CP}$ violation by heterotic string moduli. The dilaton is also evaluated as a source of $\mathrm{CP}$ violation, but is likely experimentally excluded. We consider the prospects for explaining $\mathrm{CP}$ violation in strongly coupled strings and brane worlds.
Author: Thomas Dent
Institution: University of Michigan
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: U.S. Department of Energy
OpenAlex ID: W2087562564