40 citations · 135 across the 7 of their papers we have counts for
7 papers
Polyakov's confinement mechanism for generalized Maxwell theory
Matthew Heydeman, Christian B. Jepsen, Ziming Ji +1
We study fractional-derivative Maxwell theory, as appears in effective descriptions of, for example, large QED, graphene, and some types of surface defects. We argue th…
Monodromy Defects from Hyperbolic Space
Simone Giombi, Elizabeth Helfenberger, Ziming Ji +1
We study monodromy defects in symmetric scalar field theories in dimensions. After a Weyl transformation, a monodromy defect may be described by placing the theory on $S…
Renormalization and conformal invariance of non-local quantum electrodynamics
Matthew Heydeman, Christian B. Jepsen, Ziming Ji +1
We study renormalization group flow in a non-local version of quantum electrodynamics (QED). We determine the regime in which the theory flows to a local theory in the infrared and…
Non-local non-linear sigma models
Steven S. Gubser, Christian B. Jepsen, Ziming Ji +2
We study non-local non-linear sigma models in arbitrary dimension, focusing on the scale invariant limit in which the scalar fields naturally have scaling dimension zero, so that t…
Mixed field theory
Steven S. Gubser, Christian Jepsen, Ziming Ji +1
We consider scalar field theory defined over a direct product of the real and -adic numbers. An adjustable dynamical scaling exponent enters into the microscopic lagrangian,…
Higher melonic theories
Steven S. Gubser, Christian Jepsen, Ziming Ji +1
We classify a large set of melonic theories with arbitrary -fold interactions, demonstrating that the interaction vertices exhibit a range of symmetries, always of the form $\ma…
Continuum limits of sparse coupling patterns
Steven S. Gubser, Christian Jepsen, Ziming Ji +1
We exhibit simple lattice systems, motivated by recently proposed cold atom experiments, whose continuum limits interpolate between real and -adic smoothness as a spectral expon…