Limits on cosmic chiral vortons

• Type: Article in International Scientific Journal
• Date: 1998

Authors

Martins, CJAP (Author) Other; Shellard, EPS (Author) Other

Journal

Title: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Vol. 445

Pages: 43-51

ISSN: 0370-2693

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 16 Citations

Other information

Authenticus ID: P-001-6H9

DOI: 10.1016/s0370-2693(98)01466-x

Abstract (EN): We study chiral vorton production for Witten-type superconducting string models in the context of a recently developed analytic formalism. We delineate three distinct scenarios: First, a low energy regime (including the electroweak scale) where vortons can be a source of dark matter. Secondly, an intermediate energy regime where the vorton density is too high to be compatible with the standard cosmology (thereby excluding these models). Finally, a high energy regime (including the GUT scale) in which no vortons are expected to form. The vorton density is most sensitive to the order of the string-forming phase transition and relatively insensitive to the current-forming transition. For a second-order string transition, vorton production is cosmologically disastrous for the range 10(-28) less than or similar to G mu less than or similar to 10(-10) (10(5) GeV less than or similar to T-c less than or similar to 10(14) GeV), while for the first-order case we can only exclude 10(-20) less than or similar to G mu less than or similar to 10(-14) (10(9) GeV less than or similar to T-c less than or similar to 10(12) GeV). We provide a fitting formula which summarises our results.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9