Scale-invariant string evolution with friction

• Tipo: Artigo em Revista Científica Internacional
• Data: 1996

Autores

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

Revista

Título: Physical Review D: Particles and fields

Vol. 53

Páginas: R575-R579

ISSN: 0556-2821

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 29 Citações

Scopus - 63 Citações

Outras Informações

ID Authenticus: P-001-EXD

DOI: 10.1103/physrevd.53.r575

Abstract (EN): We study the effects of friction on the scaling evolution of string networks in condensed matter and cosmological contexts. We derive a generalized ''one-scale'' model with the string correlation length L and velocity upsilon as dynamical variables. In nonrelativistic systems, we obtain a well-known L proportional to t(1/2) law, showing that loop production is important. For electroweak cosmic strings, we show transient damped epoch scaling with L proportional to t(5/4) (Or, in the matter era, L proportional to t(3/2)). A low initial density implies an earlier period with L proportional to t(1/2). For GUT strings, the approach to linear scaling L proportional to t is faster than previously estimated.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5