6 papers
Topological changes and response singularities in black hole thermodynamic branch structure
Di Wu
Different diagnostics of black hole thermodynamic branch structure do not always identify the same local event. We examine this issue in charged AdS black hole examples where a the…
Dimensional structure of thermodynamic topology in ultraspinning Kerr-AdS black holes
Min Tian, Ying Chen, Di Wu
In this paper, we apply the thermodynamic topology framework to ultraspinning Kerr-AdS black holes in arbitrary spacetime dimensions. By constructing the off-shell Helmholtz free e…
Large lepton asymmetry from axion inflation and helium abundance hinted by ACT
Di Wu, Yifan Hu, Kohei Kamada
The generation of helical magnetic fields and the associated chiral asymmetry via the chiral anomaly is a generic feature in pseudoscalar inflation. In the presence of a Chern--Sim…
subclass: Extending the topological classification of black hole thermodynamics
Wangyu Ai, Di Wu
In this paper, we identify a novel topological subclass, dubbed , in the thermodynamics of higher odd-dimensional, multiply rotating Kerr-AdS black holes. This…
Universal thermodynamic topological classes of three-dimensional BTZ black holes
Ying Chen, Xiao-Dan Zhu, Di Wu
We establish a universal thermodynamic topological classification for three-dimensional static neutral Bañados-Teitelboim-Zanelli (BTZ), charged BTZ, and rotating BTZ black holes.…
The Kaluza-Klein AdS Virasoro-Shapiro Amplitude near Flat Space
Bo Wang, Di Wu, Ellis Ye Yuan
We bootstrap the first-order correction in the curvature expansion of the Virasoro-Shapiro amplitude in AdS spacetime, for arbitrary Kaluza-Klein charges of external operators. By…