It is commonly assumed that the energy density of the Universe was dominated by radiation
between reheating after inflation and the onset of matter domination 54,000 years later …

The EDGES Collaboration has recently reported the detection of a stronger-than-expected
absorption feature in the global 21-cm spectrum, centered at a frequency corresponding to a …

A bstract A model of vector dark matter that communicates with the Standard Model only
through gravitational interactions has been investigated. It has been shown in detail how …

It has recently been shown that if the dark matter is in thermal equilibrium with a sector that is
highly decoupled from the Standard Model, it can freeze out with an acceptable relic …

A notable feature of UV freeze-in is that the relic density is strongly dependent on the highest
temperatures of the thermal bath, and a common assumption is that the relevant" highest …

Dark matter may be discovered through its capture in stars and subsequent annihilation. It is
usually assumed that dark matter is captured after a single scattering event in the star; …

We demonstrate a novel mechanism for producing dark compact objects and black holes
through a dark sector, where all the dark matter can be dissipative. Heavy dark sector …

A bstract A light hidden photon or axion-like particle is a good dark matter candidate and
they are often associated with the spontaneous breaking of dark global or gauged U (1) …

A bstract In a broad class of theories, the relic abundance of dark matter is determined by
interactions internal to a thermalized dark sector, with no direct involvement of the Standard …

A bstract We investigate the cosmology of the minimal model of neutral naturalness, the
mirror Twin Higgs. The softly-broken mirror symmetry relating the Standard Model to its twin …