Kinetic mixing of U(1)’s for local string models

Bullimore, Mathew; Conlon, Joseph P.; Witkowski, Lukas T.

Abstract

We study kinetic mixing between massless U(1)s in toroidal orbifolds with D3-branes at orbifold singularities. We focus in particular on C3/Z4 singularities but also study C3/Z6 and C3/Z′6 singularities. We find kinetic mixing can be present and describe the conditions for it to occur. Kinetic mixing comes from winding modes in the N=2 sector of the orbifold. If kinetic mixing is present its size depends only on the complex structure modulus of the torus and is independent of the Kähler moduli. We also study gauge threshold corrections for local ZM×ZN orbifold models finding that, consistent with previous studies, gauge couplings run from the bulk winding scale rather than the string scale.

Citation

Bullimore, M., Conlon, J. P., & Witkowski, L. T. (2010). Kinetic mixing of U(1)’s for local string models. Journal of High Energy Physics, 2010(11), Article 142. https://doi.org/10.1007/jhep11%282010%29142

• Journal Article Type: Article
• Acceptance Date: Nov 10, 2010
• Online Publication Date: Nov 29, 2010
• Publication Date: Nov 29, 2010
• Deposit Date: Jun 7, 2018
• Publicly Available Date: Jul 2, 2018
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2010
• Issue: 11
• Article Number: 142
• DOI: https://doi.org/10.1007/jhep11%282010%29142