120 citations · 813 across the 36 of their papers we have counts for
13 papers · 1 filter
Notes on no black hole theorem in three dimensional gravity
Pujian Mao, Weicheng Zhao
In this paper, we revisit the no black hole theorem in three dimensional (3D) gravity in the Newman-Penrose formalism in a generalized Newman-Unti gauge. After adapting the well es…
Angular momentum and memory effect
Pujian Mao, Jun-Bao Wu, Xiaoning Wu
It is a long-standing problem in general relativity that the notion of angular momentum of an isolated system has supertranslation ambiguity. In this paper, we argue that the ambig…
Notes on self-dual gravity
Pujian Mao, Weicheng Zhao
In this paper, we study self-dual gravity in the Newman-Penrose formalism. We specify the self-dual solution space from the Newman-Unti solutions. We show that the asymptotic symme…
Note on the asymptotic structure of Kerr-Schild form
Pujian Mao, Weicheng Zhao
The Kerr-Schild form provides a natural way of realizing the classical double copy that relates exact solutions in general relativity to exact solutions in gauge theory. In this pa…
Note on electromagnetic memories
Pujian Mao
In this note, we provide a tractable example of a polyhomogeneous solution space for electromagnetism at null infinity in four dimensions. The memory effect for electromagnetism is…
Remarks on infinite towers of gravitational memories
Pujian Mao
An infinite tower of gravitational memories was proposed in \cite{Compere:2019odm} by considering the matter-induced vacuum transition in the impulsive limit. We give an alternativ…
Conserved currents in the Palatini formulation of general relativity
Glenn Barnich, Pujian Mao, Romain Ruzziconi
We derive the expressions for the local, on-shell closed co-dimension 2 forms in the Palatini formulation of general relativity and explicitly show their on-shell equivalence to th…
Gravitational and electromagnetic memory
Pujian Mao, Wen-Di Tan
We present a unified investigation of memory effect in Einstein-Maxwell theory. We specify two types of memory effect, a velocity kick and a position displacement, by examining the…
BMS current algebra in the context of the Newman-Penrose formalism
Glenn Barnich, Pujian Mao, Romain Ruzziconi
Starting from an action principle adapted to the Newman-Penrose formalism, we provide a self-contained derivation of BMS current algebra, which includes the generalization of the B…
Asymptotics with a cosmological constant: The solution space
Pujian Mao
In this work, the solution space in the Newman-Penrose formalism with a cosmological constant is derived. The residual gauge transformation preserving the solution space is also wo…
More on gravitational memory
Pujian Mao, Xiaoning Wu
Two novel results for the gravitational memory effect are presented in this paper. We first extend the formula for the memory effect to solutions with arbitrary two surface boundar…
Conserved currents in the Cartan formulation of general relativity
Glenn Barnich, Pujian Mao, Romain Ruzziconi
We derive the expressions for the local, on-shell closed co-dimension 2 forms in the Cartan formulation of general relativity and explicitly show their equivalence to those of the…
Three-dimensional asymptotically flat Einstein-Maxwell theory
Glenn Barnich, Pierre-Henry Lambert, Pujian Mao
Three-dimensional Einstein-Maxwell theory with non trivial asymptotics at null infinity is solved. The symmetry algebra is a Virasoro-Kac-Moody type algebra that extends the bms3 a…