Varying-alpha monopoles

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Menezes, J (Author) Other; Avelino, PP (Author) FCUP; C. dos Santos (Author) FCUP

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 72 No. 9

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 8 Citations

Other information

Authenticus ID: P-000-0T0

DOI: 10.1103/physrevd.72.103504

Abstract (EN): We study static magnetic monopoles in the context of varying-alpha theories and show that there is a group of models for which the 't Hooft-Polyakov solution is still valid. Nevertheless, in general static magnetic monopole solutions in varying-alpha theories depart from the classical 't Hooft-Polyakov solution with the electromagnetic energy concentrated inside the core seeding spatial variations of the fine-structure constant. We show that Equivalence Principle constraints impose tight limits on the allowed variations of alpha induced by magnetic monopoles which confirms the difficulty to generate significant spatial variation of the fine-structure constant found in previous works. This is true even in the most favorable case where magnetic monopoles are the source for these variations.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8