Scale-invariant string evolution with friction

• Type: Article in International Scientific Journal
• Date: 1996

Authors

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

Journal

Title: Physical Review D: Particles and fields

Vol. 53

Pages: R575-R579

ISSN: 0556-2821

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 29 Citations

Scopus - 63 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5