69 citations · 164 across the 12 of their papers we have counts for
15 papers
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 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…
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…
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…
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.…
Thermal order in large N conformal gauge theories
Soumyadeep Chaudhuri, Changha Choi, Eliezer Rabinovici
In this work we explore the possibility of spontaneous breaking of global symmetries at all nonzero temperatures for conformal field theories (CFTs) in space-time dimension…
Pole skipping away from maximal chaos
Changha Choi, Márk Mezei, Gábor Sárosi
Pole skipping is a recently discovered subtle effect in the thermal energy density retarded two point function at a special point in the complex planes. We propose that pol…
Thermal Order in Conformal Theories
Noam Chai, Soumyadeep Chaudhuri, Changha Choi +3
It is widely expected that at sufficiently high temperatures order is always lost, e.g. magnets loose their ferromagnetic properties. We pose the question of whether this is always…
Exact four point function for large SYK from Regge theory
Changha Choi, Márk Mezei, Gábor Sárosi
Motivated by the goal of understanding quantum systems away from maximal chaos, in this note we derive a simple closed form expression for the fermion four point function of the la…
Phases of Two Adjoints QCD And a Duality Chain
Changha Choi
We analyze the 2+1 dimensional gauge theory with two fermions in the real adjoint representation with non-zero Chern-Simons level. We propose a new fermion-fermion dualities betwee…
New and Old Fermionic Dualities from 3d Bosonization
Kyle Aitken, Changha Choi, Andreas Karch
We construct novel fermion-fermion dualities in -dimensions using 3d bosonization dualities. This is achieved by relating two-node quiver theories using both the flavor-bounde…
Generalization of QCD Symmetry-Breaking and Flavored Quiver Dualities
Kyle Aitken, Andrew Baumgartner, Changha Choi +1
We extend the recently proposed symmetry breaking scenario of QCD to the so-called "master" d bosonization duality, which has bosonic and fermionic matter on both ends.…
Dynamics of QCD with Rank-Two Quarks And Duality
Changha Choi, Diego Delmastro, Jaume Gomis +1
Three-dimensional gauge theories coupled to fermions can develop interesting nonperturbative dynamics. Here we study in detail the dynamics of gauge theories coupled to a D…
Dualities and Phases of 3D N=1 SQCD
Changha Choi, Martin Rocek, Adar Sharon
We study gauge theories with N=1 supersymmetry in 2+1 dimensions. We start by calculating the 1-loop effective superpotential for matter in an arbitrary representation. We then res…