88 citations · 214 across the 11 of their papers we have counts for
12 papers
New ideas on the formation and astrophysical detection of primordial black holes
Marcos M. Flores, Alexander Kusenko
Recently, a number of novel scenarios for primordial black hole (PBH) formation have been discovered. Some of them require very minimal new physics, some others require no new ingr…
Revisiting formation of primordial black holes in a supercooled first-order phase transition
Marcos M. Flores, Alexander Kusenko, Misao Sasaki
We reexamine production of primordial black holes in a supercooled phase transition. While a mere overdensity associated with a surviving false-vacuum patch does not imply formatio…
Testing high scale supersymmetry via second order gravitational waves
Marcos M. Flores, Alexander Kusenko, Lauren Pearce +2
Supersymmetry predicts multiple flat directions, some of which carry a net baryon or lepton number. Condensates in such directions form during inflation and later fragment into Q-b…
Objects and primordial black holes
Marcos M. Flores, Alexander Kusenko, Andrea M. Ghez +1
We suggest that " objects" recently discovered in the Galactic Center may be clouds of gas bound by the gravitational field of stellar-mass black holes produced in the interacti…
Structure Formation after Reheating: Supermassive Primordial Black Holes and Fermi Ball Dark Matter
Marcos M. Flores, Yifan Lu, Alexander Kusenko
In the presence of (relatively) long-range forces, structures can form even during the radiation dominated era, leading to compact objects, such as Fermi balls or primordial black…
Defrosting and Blast Freezing Dark Matter
Marcos M. Flores, Chris Kouvaris, Alexander Kusenko
We show that the present-day dark matter abundance can be produced through a novel mechanism that involves a very rapid thermal freeze-out caused by inhomogeneous heating and succe…
Gravitational waves from rapid structure formation on microscopic scales before matter-radiation equality
Marcos M. Flores, Alexander Kusenko, Misao Sasaki
The existence of scalar fields can be probed by observations of stochastic gravitational waves. Scalar fields mediate attractive forces, usually stronger than gravity, on the lengt…
Fireball baryogenesis from early structure formation due to Yukawa forces
Marcos M. Flores, Alexander Kusenko, Lauren Pearce +1
We show that viable electroweak baryogenesis can be realized without a first-order phase transition if plasma is heated inhomogeneously by nongravitational structure formation in s…
Hitting two BSM particles with one lepton-jet: search for a top partner decaying to a dark photon, resulting in a lepton-jet
K. du Plessis, M. M. Flores, D. Kar +2
A maverick top partner model, decaying to a dark photon was suggested. The dark photon decays to two overlapping electrons for dark photon masses of GeV, and results…
Primordial black holes as a dark matter candidate in theories with supersymmetry and inflation
Marcos M. Flores, Alexander Kusenko
We show that supersymmetry and inflation, in a broad class of models, generically lead to formation of primordial black holes (PBHs) that can account for dark matter. Supersymmetry…
Spins of primordial black holes formed in different cosmological scenarios
Marcos M. Flores, Alexander Kusenko
Primordial black holes (PBHs) could account for all or part of dark matter, as well as for some LIGO events. We discuss the spins of primordial black holes produced in different co…
Primordial black holes from long-range scalar forces and scalar radiative cooling
Marcos M. Flores, Alexander Kusenko
We describe a new scenario for the formation of primordial black holes (PBHs). In the early Universe, the long-range forces mediated by the scalar fields can lead to formation of h…