Scaling of cosmic string loops

By V. Vanchurin, Ken D. Olum, A. Vilenkin. 2005

163 citations recorded by the source corpus.

We study the spectrum of loops as a part of a complete network of cosmic strings in flat spacetime. After a long transient regime, characterized by production of small loops at the scale of the initial conditions, it appears that a true scaling regime takes over. In this final regime the characteristic length of loops scales as 0.1t, in contrast to earlier simulations which found tiny loops. We expect the expanding-universe behavior to be qualitatively similar. If this expectation is correct, then the large loop sizes have important cosmological implications. In particular, the nucleosynthesis bound then becomes G{mu} < or approx. 10{sup -7}, much tighter than that obtained from earlier analyses.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/32bc8efec3eab4b1954474c0856170f45f3fa023

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Jose J. Blanco-Pillado
2. Ken D. Olum
3. P. Simakachorn
4. Y. Gouttenoire
5. G. Servant
6. Edmund J. Copeland
7. T. Kibble
8. Benjamin Shlaer

In Nuclear and High Energy Physics

1. Jose J. Blanco-Pillado
2. Ken D. Olum
3. G. Servant
4. P. Simakachorn
5. Y. Gouttenoire
6. T. Kibble
7. Edmund J. Copeland
8. Benjamin Shlaer

Citations in the corpus

• The landscape of QCD axion models (2020, background): “Although in principle the length of the loops formed could be ranging at any size, numerical simulations [203, 233–238] show that the initial length of the large loop at its formation tracks the time of formation as”
• Cosmological evolution of cosmic string loops (2005, background): “[29], the authors studied cosmic string evolution under the simplifying hypothesis of Minkowski spacetime and observed that most of their primary loops are produced at a size 0.”
• Beyond the Standard Models with cosmic strings (2019, background): “The scaling property of a string network has been checked some fifteen years ago in numerical Nambu-Goto simulations [99–102] and more recently with larger simulations [103].”
• Large parallel cosmic string simulations: New results on loop production (2011, methodology): “There are several differences between the present simulation and that of [35], which make a direct comparison difficult.”
• Cosmic strings and superstrings (2009, background): “Around a straight, local cosmic string, spacetime is actually locally flat; the gravitational acceleration towards the string is zero (Vilenkin 1981).”