Advancements in Cosmology through Numerical Relativity

Recent advancements in the field of cosmology have been highlighted in a new paper titled "Cosmology using numerical relativity" by authors Josu C. Aurrekoetxea, Katy Clough, and Eugene A. Lim. This paper provides a comprehensive review of the application of numerical relativity in understanding cosmological phenomena, particularly in strong-gravity environments.

The authors begin with an introduction to numerical relativity, explaining its significance in solving complex cosmological spacetimes. They emphasize the importance of this approach for both cosmologists and numerical relativists, aiming to bridge the gap between these two fields.

The paper surveys existing research, focusing on general relativistic simulations that do not rely on approximations. The authors categorize their findings according to the history of the universe, from its origins in cosmogenesis through the hot Big Bang phase to the universe's late-time evolution. They discuss the current state-of-the-art simulations and suggest future research directions that could enhance our understanding of the universe's dynamics.

This work is particularly relevant as it addresses the challenges faced in modeling the universe's behavior under extreme conditions, which are crucial for developing accurate cosmological models. The findings could have implications for various areas of astrophysics, including the study of gravitational waves and the formation of cosmic structures. The paper is set to be submitted to Living Reviews in Relativity and spans 42 pages with 21 figures, providing a detailed overview of the topic.

For reference, the paper can be cited as: Aurrekoetxea, J. C., Clough, K., & Lim, E. A. (2024). Cosmology using numerical relativity. arXiv:2409.01939 [gr-qc].