A review of total energy-momenta in GR with a positive cosmological constant

TL;DR

This paper reviews different methods and expressions for defining total energy-momentum and mass in general relativity when a positive cosmological constant is present, discussing conceptual issues and techniques.

Contribution

It provides a comprehensive overview of existing approaches to total energy-momentum in de Sitter-like spacetimes with a positive cosmological constant.

Findings

Summarizes key approaches and their conceptual foundations.

Highlights challenges in defining energy-momentum in de Sitter spacetime.

Discusses technical methods used in various formulations.

Abstract

A review is given of the various approaches to and expressions for total energy-momentum and mass in the presence of a positive cosmological constant in Einstein's field equations, together with a discussion of the key conceptual questions, main ideas and techniques behind them.