Non-Relativistic Strings in Expanding Spacetime

Details Non-Relativistic Strings in Expanding Spacetime Non-Relativistic Strings in Expanding Spacetime

2007-07-26

arxiv.org/abs/0707.3944v2

Class.Quant.Grav.25:125017,2008

Astronomy and Astrophysics

Astrophysics

35 pages, 3 figures. Minor corrections, accepted by CQG

Scientific paper

10.1088/0264-9381/25/12/125017

We obtain a non-relativistic diffeomorphism invariant string action as a special limit of the Nambu-Goto action in an FLRW background. We use this action to study non-relativistic string dynamics in an expanding universe and construct an analytic model describing the macroscopic properties of non-relativistic string networks. The non-relativistic constraint equations allow arbitrarily small string velocities and thus a `frustrated' equation of state for non-interacting strings can be obtained without the need of a velocity damping mechanism. Assuming that colliding string segments reconnect by exchange of partners, non-relativistic string networks exhibit scaling behaviour, but with enhanced energy densities due to the reduced average string velocity. Non-relativistic string networks can be relevant in several contexts in condensed matter physics and cosmology.

Affiliated with

Also associated with

No associations

Rating

Non-Relativistic Strings in Expanding Spacetime does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-Relativistic Strings in Expanding Spacetime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-Relativistic Strings in Expanding Spacetime will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-40906