In this work the connection between vortex condensation in a d-wave superconductor and the QED3 gauge theory of the pseudogap is elucidated. The approach taken circumvents the use of the standard Franz-Tesanovic gauge transformation, borrowing ideas from the path-integral analysis of the Aharonov-Bohm problem. An essential feature of this approach is that gauge transformations which are prohibited on a particular multiply-connected manifold (e.g. a superconductor with vortices) can be successfully performed on the universal covering space associated with that manifold.
Publication Source (Journal or Book title)
International Journal of Modern Physics B
Sheehy, D. (2003). Feynman path-integral approach to the QED3 theory of the pseudogap. International Journal of Modern Physics B, 17 (25), 4509-4523. https://doi.org/10.1142/S0217979203022842