145 citations · 1.3k across the 29 of their papers we have counts for
12 papers · 1 filter
Improved hot dark matter bound on the QCD axion
Alessio Notari, Fabrizio Rompineve, Giovanni Villadoro
We strengthen the cosmological bound on the axion mass, by solving the momentum-dependent Boltzmann equations for axion-pion scatterings and by using a phenomenological production…
High Quality QCD Axion at Gravitational Wave Observatories
Ricardo Z. Ferreira, Alessio Notari, Oriol Pujolàs +1
The axion solution to the strong CP problem is delicately sensitive to Peccei-Quinn breaking contributions that are misaligned with respect to QCD instantons. Heavy QCD axion model…
Recipes for Oscillon Longevity
Jan Olle, Oriol Pujolas, Fabrizio Rompineve
Oscillons are localized states of scalar fields sustained by self interactions. They decay by emitting classical radiation, but their lifetimes are surprisingly large. We revisit t…
The DFSZ axion in the CMB
Ricardo Z. Ferreira, Alessio Notari, Fabrizio Rompineve
We perform for the first time a dedicated analysis of cosmological constraints on DFSZ QCD axion models. Such constructions are especially interesting in light of the recent Xenon-…
Decay of Boson Stars with Application to Glueballs and Other Real Scalars
Mark P. Hertzberg, Fabrizio Rompineve, Jessie Yang
One of the most interesting candidates for dark matter are massive real scalar particles. A well-motivated example is from a pure Yang-Mills hidden sector, which locks up into glue…
Peccei-Quinn Phase Transition at LIGO
Benedict von Harling, Alex Pomarol, Oriol Pujolas +1
The LIGO observatories can potentially detect stochastic gravitational waves arising from phase transitions which happened in the early universe at temperatures around $T\sim 10^{8…
Oscillons and Dark Matter
Jan Olle, Oriol Pujolas, Fabrizio Rompineve
Oscillons are bound states sustained by self-interactions that appear in rather generic scalar models. They can be extremely long-lived and in the context of cosmology they have a…
The Supercooled Universe
Pietro Baratella, Alex Pomarol, Fabrizio Rompineve
Strongly-coupled theories at the TeV can naturally drive a long period of supercooling in the early universe. Trapped into the deconfined phase, the universe could inflate and cool…
Primordial Black Holes from the QCD axion
Francesc Ferrer, Eduard Masso, Giuliano Panico +2
We propose a mechanism to generate Primordial Black Holes (PBHs) which is independent of cosmological inflation and occurs slightly below the QCD phase transition. Our setup relies…
The photo-philic QCD axion
Marco Farina, Duccio Pappadopulo, Fabrizio Rompineve +1
We propose a framework in which the QCD axion has an exponentially large coupling to photons, relying on the "clockwork" mechanism. We discuss the impact of present and future axio…
Dark Radiation predictions from general Large Volume Scenarios
Arthur Hebecker, Patrick Mangat, Fabrizio Rompineve +1
Recent observations constrain the amount of Dark Radiation () and may even hint towards a non-zero value of . It is by now well-known that this puts str…
Weak Scale Baryogenesis in a Supersymmetric Scenario with R-parity violation
Fabrizio Rompineve
We investigate the connection between R-parity violation (RPV) in supersymmetric models and Baryogenesis. First we discuss in detail the assumptions of a theorem by Nanopoulos and…