From the 1 of 10 linked papers with an AI index.
10 papers
Covariant variation and its applications
Wen-Bin Liu, Jiang Long
The paper introduces a covariant variation operator for tensor fields that combines Lie and metric variations, studies its algebraic properties and anomalies, and applies it to sup…
Constraining bulk-to-boundary correlators under Poincaré symmetry
Jiang Long, Jing-Long Yang
It is well known that a general two-point function cannot be uniquely determined by Poincaré symmetry. In this paper, we show that bulk-to-boundary correlators are highly constrai…
Spinning bulk-to-boundary correlators in the massless theories with Poincaré symmetry
Jiang Long, Yu-Xuan Wei, Xin-Hao Zhou
We classify the bulk-to-boundary correlators for general integer-spin operators in a Poincaré-invariant theory by imposing suitable fall-off conditions near future/past null i…
Carrollian correlators in black hole perturbation theory
Jiang Long, Zhan-Jia Qu, Hong-Yang Xiao
In this note, we clarify the relationship between the two-point Carrollian correlator and massless scattering in black hole background. It turns out that there are two kinds of Car…
Reduction of topological invariants on null hypersurfaces
Jiang Long, Xin-Hao Zhou
Gravitational helicity flux density represents the angular distribution of helicity flux in general relativity. In this work, we explore its relationship to the reduction of topolo…
Extrapolating the massive fields to future timelike infinity
Wen-Bin Liu, Jiang Long
It is well-known that future timelike infinity () in four-dimensional Minkowski spacetime is conformal to the unit three-dimensional hyperboloid (). We asymptotically exp…