Abstract The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders
about the fundamental theory of nature at play in the extreme gravity regime, where the …

In this review we present a thoroughly comprehensive survey of recent work on modified
theories of gravity and their cosmological consequences. Amongst other things, we cover …

The dawn of the twenty-first century came with very positive prospects for gravity, cosmology,
and astrophysics. Technological progress made it possible for cosmology to enter to its …

One century after its formulation, Einstein's general relativity (GR) has made remarkable
predictions and turned out to be compatible with all experimental tests. Most of these tests …

The discovery of the first pulsar in a binary star system, the Hulse–Taylor pulsar, 50 years
ago opened up an entirely new field of experimental gravity. For the first time it was possible …

Kenneth Lang's classic work Astrophysical Formulae.(Vol. I and II) is now available as soft
cover edition in a set. This volume is a reference source of fundamental formulae in physics …

A generic class of theories where gravity is mediated by one tensor field together with an
arbitrary number of scalar fields is considered. The predictions of these theories are worked …

Motivated by ideas about quantum gravity, a tremendous amount of effort over the past
decade has gone into testing Lorentz invariance in various regimes. This review …

We study a generally covariant model in which local Lorentz invariance is broken by a
dynamical unit timelike vector field ua—the “aether.” Such a model makes it possible to …

This paper presents a review of both active and passive ring laser devices. The operating
principles of the ring laser are developed and discussed, with special emphasis given to the …