We review the physics and phenomenology of wave dark matter: a bosonic dark matter
candidate lighter than about 30 eV. Such particles have a de Broglie wavelength exceeding …

Cosmological gravitational particle production (CGPP) is the creation of particles in an
expanding universe due solely to their gravitational interaction. These particles can play an …

The dark photon is a massive hypothetical particle that interacts with the Standard Model by
kinetically mixing with the visible photon. For small values of the mixing parameter, dark …

Several pulsar timing arrays including NANOGrav, EPTA, PPTA, and CPTA have recently
reported the observation of a stochastic background of gravitational wave spectrum in the …

The recent observations by pulsar timing array (PTA) experiments suggest the existence of
stochastic gravitational wave background in the nano-Hz range. It can be a hint for the new …

Any new vector boson with non-zero mass (a'dark photon'or'Proca boson') that is present
during inflation is automatically produced at this time from vacuum fluctuations and can …

A bstract The phenomenon of cosmological gravitational particle production (CGPP) is
expected to occur during the period of inflation and the transition into a hot big bang …

The next generation of cosmic microwave background, gravitational wave, and large scale
structure, experiments will provide an unprecedented opportunity to probe the primordial …

We investigate the differences in the small-scale structure of vector dark matter (VDM) and
scalar dark matter (SDM) using 3+ 1 dimensional simulations of single/multicomponent …

Ultralight dark photons and axions are well-motivated hypothetical dark matter candidates.
Both dark photon dark matter and axion dark matter can resonantly convert into …