5 papers
BPS Invariants for Generalized Toric Calabi-Yau Threefolds
Antoine Bourget, Peng Cheng, Quentin Lamouret
We apply topological vertex techniques to Calabi-Yau threefolds dual to brane webs where several 5-branes can end on the same 7-brane. In this context, we determine how topological…
Gravitational partition function under volume constraints
Shan-Ping Wu, Peng Cheng, Shao-Wen Wei
The Euclidean action provides a bridge between gravitational thermodynamics and the partition function. In this work, we further investigate the gravitational partition function un…
Integral cubic form of 5D minimal supergravities and non-perturbative anomalies in 6D (1,0) theories
Peng Cheng, Michael N. Milam, Ruben Minasian
A five-dimensional minimal supergravity theory coupled to vector and hypermultiplets is specified by a set of trilinear couplings, given by an intersection form , and grav…
Scattering Radiation Emitted Near a Black Hole Horizon
Peng Cheng
We study a family of outgoing electromagnetic radiation states prepared outside but arbitrarily close to the horizon of a Schwarzschild black hole, with frequencies that remain uni…
The stringy geometry of integral cohomology in mirror symmetry
Peng Cheng, Ilarion V. Melnikov, Ruben Minasian
We examine the physical significance of torsion co-cycles in the cohomology of a projective Calabi-Yau three-fold for the (2,2) superconformal field theory (SCFT) associated to the…