9 citations · 13 across the 7 of their papers we have counts for
7 papers
Super-Chevalley Restriction and Relative Lie Algebra Cohomology over the 2|3 Algebra
Chi-Ming Chang
Let , with even and odd. For a reductive Lie algebra , let b…
Classification of 2D Fermionic Systems with a Flavor Symmetry
Chi-Ming Chang, Jin Chen, Fengjun Xu
We classify superfusion categories describing two-dimensional fermionic systems equipped with the universal fermion-parity symmetry, implemented by a topological defect line (TDL)…
Fortuity and R-charge concentration in the D1-D5 CFT
Chi-Ming Chang, Haoyu Zhang
We investigate finite- BPS cohomology in the D1--D5 CFT, focusing on the sector of fortuitous classes. Analyzing the supercharge cochain complexes in the and theorie…
Violation of S-duality in classical -cohomology
Chi-Ming Chang, Ying-Hsuan Lin
We study the cohomology of a chiral supercharge in the super-Yang-Mills (SYM) theory at tree level. The cohomology classes correspond one-to-one to the $\frac1{…
Fortuity in the D1-D5 system
Chi-Ming Chang, Ying-Hsuan Lin, Haoyu Zhang
We reformulate the lifting problem in the D1-D5 CFT as a supercharge cohomology problem, and enumerate BPS states according to the fortuitous/monotone classification. Working in th…
Holographic covering and the fortuity of black holes
Chi-Ming Chang, Ying-Hsuan Lin
We propose a classification of BPS states in holographic CFTs into monotone and fortuitous, based on their behaviors in the large limit. Intuitively, monotone BPS states form i…
On -BPS black holes and the chiral algebra of SYM
Chi-Ming Chang, Ying-Hsuan Lin, Jingxiang Wu
We investigate the existence of -BPS black hole microstates in the sector of Type IIB string theory on . As will…