3 papers
hep-th2017
Worldsheet Instantons and the amplitude for string pair production in an external field as a WKB exact functional integral
James Gordon, Gordon W. Semenoff
We revisit the problem of charged string pair creation in a constant external electric field. The string states are massive and creation of pairs from the vacuum is a tunnelling pr…
hep-th2017
Antisymmetric Wilson loops in SYM beyond the planar limit
James Gordon
We study the -BPS circular Wilson loop in the totally antisymmetric representation of the gauge group in supersymmetric Yang-Mills. This observable is…
hep-th2016
Schwinger pair production: Explicit Localization of the world-line instanton
James Gordon, Gordon W. Semenoff
We present a simple proof that the imaginary part of the world-line path integral which computes the rate of Schwinger pair production of charged particles in a constant electric f…