Astrophysical Implications of Higher-Dimensional Gravity

TL;DR

This paper reviews how higher-dimensional gravity theories impact astrophysics and cosmology, discussing dark matter, quantum aspects, and experimental tests involving cosmic microwave background and gyroscope precession.

Contribution

It provides a comprehensive overview of recent developments in higher-dimensional gravity theories and their observational and theoretical implications in astrophysics.

Findings

Higher-dimensional theories offer explanations for dark matter and cosmological constant.

Experimental tests include cosmic microwave background perturbations and gyroscope precession.

Embeddings and higher-dimensional views of the big bang are explored.

Abstract

We review the implications of modern higher-dimensional theories of gravity for astrophysics and cosmology. In particular, we discuss the latest developments of space-time-matter theory in connection with dark matter, particle dynamics and the cosmological constant, as well as related aspects of quantum theory. There are also more immediate tests of extra dimensions, notably involving perturbations of the cosmic 3K microwave background and the precession of a supercooled gyroscope in Earth orbit. We also outline some general features of embeddings, and include pictures of the big bang as viewed from a higher dimension.