13 citations · 13 across the 1 of their papers we have counts for
3 papers
hep-th2025
Global Anomalies in Sigma Models with Majorana--Weyl Fermions
Changha Choi
We investigate a global sigma model anomaly in two-dimensional sigma models with Majorana--Weyl fermions coupled to a sigma model field with target space~. The anomaly originate…
hep-th2024
Surface Operators and Exact Holography
Changha Choi, Jaume Gomis, Raquel Izquierdo García
Surface operators are nonlocal probes of gauge theories capable of distinguishing phases that are not discernible by the classic Wilson-'t Hooft criterion. We prove that the correl…
hep-th2023★ 13 cited
Effective description of sub-maximal chaos: stringy effects for SYK scrambling
Changha Choi, Felix M. Haehl, Márk Mezei +1
It has been proposed that the exponential decay and subsequent power law saturation of out-of-time-order correlation functions can be universally described by collective 'scramblon…