6 papers
Supersymmetry and trace formulas III. Frenkel trace formula
Changha Choi, Leon A. Takhtajan
By applying the new supersymmetric localization principle introduced in \cite{Choi:2021yuz,Choi:2023pjn}, we present two complementary approaches for the path integral derivation o…
Supersymmetry and trace formulas II. Selberg trace formula
Changha Choi, Leon A. Takhtajan
By extending the new supersymmetric localization principle introduced in \cite{Choi:2021yuz}, we present a path integral derivation of the Selberg trace formula on arbitrary compac…
Worldline Localization
Changha Choi, Leon A. Takhtajan
We show that two elementary worldline path integrals-the thermal partition function of the harmonic oscillator and the one-loop effective action of scalar QED in a constant field s…
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…
Supersymmetry and trace formulas I. Compact Lie groups
Changha Choi, Leon A. Takhtajan
In the context of supersymmetric quantum mechanics we formulate new supersymmetric localization principle, with application to trace formulas for a full thermal partition function.…
Surface Operators and Exact Holography
Changha Choi, Jaume Gomis, Raquel Izquierdo GarcÃa
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…