Ying-Hsuan Lin

activity

20232025

most citedOn

\frac{1}{8}

-BPS black holes and the chiral algebra of

N = 4

SYM

9 citations · 13 across the 6 of their papers we have counts for

collaborators

6 papers

hep-th2025

Violation of S-duality in classical $Q$ -cohomology

Chi-Ming Chang, Ying-Hsuan Lin

We study the cohomology of a chiral supercharge $Q$ in the $N = 4$ super-Yang-Mills (SYM) theory at tree level. The cohomology classes correspond one-to-one to the $\frac1{…

math.AT2025

Genuine $C_{n}$ -equivariant $TMF$

Ying-Hsuan Lin, Akira Tominaga, Mayuko Yamashita

We determine the $TMF$ -module structures of the genuine $C_{2}$ -equivariant $TMF$ with $RO (C_{2})$ -gradings and of the $C_{3}$ -equivariant $TMF$ . More…

hep-th2025

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…

math.AT2024

Topological Elliptic Genera I -- The mathematical foundation

Ying-Hsuan Lin, Mayuko Yamashita

We construct {\it Topological Elliptic Genera}, homotopy-theoretic refinements of the elliptic genera for $S U$ -manifolds and variants including the Witten-Landweber-Ochanine genus.…

hep-th2024★ 4 cited

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 $N$ limit. Intuitively, monotone BPS states form i…

hep-th2023★ 9 cited

On $\frac{1}{8}$ -BPS black holes and the chiral algebra of $N = 4$ SYM

Chi-Ming Chang, Ying-Hsuan Lin, Jingxiang Wu

We investigate the existence of $\frac{1}{8}$ -BPS black hole microstates in the $su (1, 1∣2)$ sector of Type IIB string theory on $AdS_{5} \times S^{5}$ . As will…

Violation of S-duality in classical Q-cohomology

Genuine Cn​-equivariant TMF