Zero modes and anomalies in superconducting strings

Details Zero modes and anomalies in superconducting strings Zero modes and anomalies in superconducting strings

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvd..38.1684w&link_type=abstract

Physical Review D (Particles and Fields), Volume 38, Issue 6, 15 September 1988, pp.1684-1700

Physics

Condensed Matter

Superconductivity

4

Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

Superconductivity in cosmic strings occurs when electrically charged fermions are trapped as massless particles (Jackiw-Rossi zero modes) in the core of a string. Currents are generated when an electric field is applied along the string, or more realistically, when the string moves through a cosmic magnetic field. In realistic models (e.g., those inspired by grand unified theories), the fermion-vortex systems that arise can be quite complicated and the question of whether or not superconductivity occurs is very model dependent. For example, in certain models, mixing between right- and left-moving zero modes gives rise to an effective mass for the fermions on the string. The currents in this case, at least for reasonable values for cosmic magnetic fields, are uninterestingly small. In this paper, we present a simple method for determining the number of true zero modes in a special class of fermion-vortex systems. These results are then applied to a particular particle-physics model based on the gauge group E6. We also consider the possibility that ∑left moversq2≠∑right moversq2 where q is the electromagnetic charge of a zero mode. In this situation, which occurs in ``frustrated'' as well as global strings, there is a gauge anomaly (and therefore charge nonconservation) in the effective (1+1)-dimensional theory for the fermion-string system. In the presence of an electric field, the string acquires both charge and current. Charge nonconservation on the string is accounted for by an inflow of charge from the world outside the string. However, both charge and current can be screened, either by polarization of the vacuum or by the surrounding plasma.

Affiliated with

Also associated with

No associations

Rating

Zero modes and anomalies in superconducting strings 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 Zero modes and anomalies in superconducting strings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zero modes and anomalies in superconducting strings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-916001