Mass and angular momentum of charged rotating G\"{o}del black holes in five-dimensional minimal supergravity

TL;DR

This paper compares different formalisms for calculating mass and angular momentum of five-dimensional charged rotating G"odel black holes in supergravity, emphasizing the importance of matter field contributions for accurate physical charges.

Contribution

It introduces an off-shell ADT potential in supergravity and compares it with BBC approach, highlighting the necessity of matter field contributions in charge calculations.

Findings

The off-shell ADT formalism aligns with the BBC superpotential.

Matter fields significantly affect the computed physical charges.

Proper reference backgrounds are essential for accurate mass and angular momentum.

Abstract

In this paper, for the sake of providing a concrete comparison between the usual Abbott-Deser-Tekin (ADT) formalism and its off-shell extension, as well as comparing the latter with the Barnich-Brandt-Compere (BBC) approach, we carry out these methods to compute the mass and angular momentum of the rotating charged G\"{o}del black holes in five-dimensional minimal supergravity. We first present the off-shell ADT potential of the supergravity theories in arbitrary odd dimensions, which is consistent with the superpotential via the BBC approach. Then the off-shell generalized ADT method is applied to evaluate the mass and angular momentum of the G\"{o}del-type black holes by including the contribution from the gauge field. Finally, we strictly obey the rules of the original ADT formalism to incorporate the contribution from the gauge field within the potential. With the help of the modified potential, we try to seek for appropriate reference backgrounds to produce the mass and angular momentum. It is observed that the ADT formalism has to incorporate the contribution from the matter fields to yield physical charges for the G\"{o}del-type black holes.