3 papers
hep-th2026
Finite- BMN index across all vacuum sectors
Chi-Ming Chang, Sarthak Duary, Kangning Liu
We compute the finite- Witten index of BMN matrix quantum mechanics after summing over all partition-labeled supersymmetric vacuum sectors. Starting from the unitary-matrix inte…
hep-th2026
Mass-Flow Invariance of -Cohomology in BMN Matrix Quantum Mechanics
Chi-Ming Chang, Zhengyuan Du, Sarthak Duary +2
We study the dependence of the dynamical supercharges of BMN matrix quantum mechanics on the mass parameter . Taking the -derivative at fixed canonical matrix variables, we s…
hep-th2024
Fortuity in SYK Models
Chi-Ming Chang, Yiming Chen, Bik Soon Sia +1
We study the fortuity phenomenon in supersymmetric Sachdev-Ye-Kitaev (SYK) models. For generic choices of couplings, all the BPS states in the SUSY SYK model are fo…