Fractal properties and small-scale structure of cosmic string networks

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Martins, CJAP (Autor) Outra; Shellard, EPS (Autor) Outra

Revista

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

Vol. 73 Nº 123520

ISSN: 1550-7998

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 101 Citações

Scopus - 100 Citações

Outras Informações

ID Authenticus: P-004-NJW

DOI: 10.1103/physrevd.73.043515

Abstract (EN): We present results from a detailed numerical study of the small-scale and loop production properties of cosmic string networks, based on the largest and highest resolution string simulations to date. We investigate the nontrivial fractal properties of cosmic strings, in particular, the fractal dimension and renormalized string mass per unit length, and we also study velocity correlations. We demonstrate important differences between string networks in flat (Minkowski) spacetime and the two very similar expanding cases. For high resolution matter era network simulations, we provide strong evidence that small-scale structure has converged to "scaling" on all dynamical length scales, without the need for other radiative damping mechanisms. We also discuss preliminary evidence that the dominant loop production size is also approaching scaling.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6