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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
==Dimensions==
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