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 …

70 AIM, UMR 7158, CEA/DRF, CNRS, Université Paris Diderot, Irfu/Service d'Astrophysique,
Centre de Saclay, FR-91191 Gif-sur-Yvette, France

Black hole superradiance is a powerful probe of light, weakly coupled hidden sector
particles. Many candidate particles, such as axions, generically have self-interactions that …

Macroscopic objects, as we see them all around us, are governed by a variety of forces,
derived from a variety of approximations to a variety of physical theories. In contrast, the only …

Ultralight bosons can induce superradiant instabilities in spinning black holes, tapping their
rotational energy to trigger the growth of a bosonic condensate. Possible observational …

Advanced LIGO may be the first experiment to detect gravitational waves. Through
superradiance of stellar black holes, it may also be the first experiment to discover the QCD …

Massive vector fields feature in several areas of particle physics, eg, as carriers of weak
interactions, dark matter candidates, or an effective description of photons in a plasma. Here …

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 …

We study the growth and saturation of the superradiant instability of a complex, massive
vector (Proca) field as it extracts energy and angular momentum from a spinning black hole …

Ultralight bosons and axion-like particles appear naturally in different scenarios and could
solve some long-standing puzzles. Their detection is challenging, and all direct methods …