Dynamics of domain wall networks with junctions

• Type: Article in International Scientific Journal
• Date: 2008

Authors

P. P. Avelino (Author) Other; C. J. A. P. Martins (Author) Other; J. Menezes (Author) Other; R. Menezes (Author) Other; Joana Cassilda Rodrigues Espain de Oliveira (Author) FEUP

Journal

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

Vol. 78 No. 103508

Pages: 1-17

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 38 Citations

Scopus - 41 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

CORDIS: Physical sciences > Astronomy > Cosmology

Other information

Authenticus ID: P-003-VAT

Abstract (EN): We use a combination of analytic tools and an extensive set of the largest and most accurate three-dimensional field theory numerical simulations to study the dynamics of domain wall networks with junctions. We build upon our previous work and consider a class of models which, in the limit of large number N of coupled scalar fields, approaches the so-called “ideal” model (in terms of its potential to lead to network frustration). We consider values of N between N=2 and N=20, and a range of cosmological epochs, and we also compare this class of models with other toy models used in the past. In all cases we find compelling evidence for a gradual approach to scaling, strongly supporting our no-frustration conjecture. We also discuss the various possible types of junctions (including cases where there is a hierarchy of them) and their roles in the dynamics of the network. Finally, we provide a cosmological Zel'dovich-type bound on the energy scale of this kind of defect network: it must be lower than 10 keV.

Language: Portuguese

Type (Professor's evaluation): Scientific