Editing Cosmic string (section)

==Theories containing cosmic strings==

The prototypical example of a field theory with cosmic strings is the [[Abelian Higgs model]]. The quantum field theory and string theory cosmic strings are expected to have many properties in common, but more research is needed to determine the precise distinguishing features.  The F-strings for instance are fully quantum-mechanical and do not have a classical definition, whereas the field theory cosmic strings are almost exclusively treated classically.

In [[superstring]] theory, the role of cosmic strings can be played by the fundamental strings (or F-strings) themselves that define the theory [[Perturbation theory|perturbatively]], by D-strings which are related to the F-strings by weak-strong or so called [[S-duality]], or higher-dimensional [[D-branes|D-, NS- or M-branes]] that are partially wrapped on compact cycles associated to extra spacetime dimensions so that only one non-compact dimension remains.<ref>{{cite journal |arxiv=hep-th/0312067 |bibcode=2004JHEP...06..013C |doi=10.1088/1126-6708/2004/06/013 |title=Cosmic F- and D-strings |year=2004 |last1=Copeland |first1=Edmund J |last2=Myers |first2=Robert C |last3=Polchinski |first3=Joseph |journal=Journal of High Energy Physics |volume=2004 |issue=6 |pages=013|s2cid=140465 }}</ref>