48 citations · 134 across the 11 of their papers we have counts for
13 papers
Wide binaries in ultra-faint dwarf galaxies as a probe of extended dark objects
María Olalla Olea-Romacho
Wide stellar binaries are sensitive dynamical probes of dark matter substructure. We generalize existing point-mass disruption constraints to spherical extended dark objects and ap…
JWST Constraints on Primordial Magnetic Fields
Malcolm Fairbairn, María Olalla Olea-Romacho, Juan Urrutia +1
Primordial magnetic fields (PMFs) enhance small-scale structure formation through the Lorentz force acting on baryons, boosting the abundance of low-mass halos and their hosted gal…
Inflationary Particle Production and Implications for WIMP Substructure
María Olalla Olea-Romacho
We explore the observational consequences of resonant particle production during inflation, focusing on its impact on dark matter annihilation signals today. A transient burst of p…
Running of the spectral index: Reconciling the CMB with the Lyman- Forest
Malcolm Fairbairn, Lucien Heurtier, María Olalla Olea-Romacho
We investigate the scale dependence of the primordial power spectrum by combining \Planck, ACT DR6, SPT-3G, and eBOSS Lyman- forest data, extending sensitivity to smaller comovi…
Can WIMPs Survive the Legacy of a Magnetised Early Universe?
María Olalla Olea-Romacho, Malcolm Fairbairn, Pranjal Ralegankar
Primordial magnetic fields (PMFs) can seed additional small-scale matter fluctuations, leading to the formation of dense, early-collapsing dark matter structures known as minihalos…
Benchmarking a fading window: electroweak baryogenesis in the C2HDM, LHC constraints after Run 2 and prospects for LISA
Thomas Biekötter, María Olalla Olea-Romacho
The origin of the baryon asymmetry of the universe remains one of the most pressing open questions in particle physics and cosmology. Electroweak baryogenesis offers an experimenta…
Gravitational Wave Production During Reheating: From the Inflaton to Primordial Black Holes
Mathieu Gross, Essodjolo Kpatcha, Yann Mambrini +2
We calculate the gravitational waves (GWs) produced by primordial black holes (PBHs) in the presence of the inflaton condensate in the early Universe. Combining the GW production f…
Searching for a new light gauge boson with axial couplings in muon beam dump experiments
Pierre Fayet, María Olalla Olea-Romacho
We present a formalism for new interactions involving weak hypercharge, baryon, and lepton numbers, and a possible axial symmetry generator in the presence of a second…
Magnetogenesis with gravitational waves and primordial black hole dark matter
Shyam Balaji, Malcolm Fairbairn, Maria Olalla Olea-Romacho
Strongly supercooled first order phase transitions (FOPTs) can produce primordial black hole (PBH) dark matter (DM) along with observable gravitational waves (GWs) from bubble coll…
Primordial Magnetogenesis in the Two-Higgs-doublet Model
María Olalla Olea-Romacho
-ray emission of blazars infer the presence of large-scale magnetic fields in the intergalactic medium, but their origin remains a mystery. Using recent data from MAGIC, H.E.S.S…
Primordial black holes as dark matter: Interferometric tests of phase transition origin
Iason Baldes, María Olalla Olea-Romacho
We show that primordial black holes - in the observationally allowed mass window with - formed from late nucleating patches in a first order phase transition imply…
Electroweak Asymmetric Early Universe via a Scalar Condensate
Jae Hyeok Chang, María Olalla Olea-Romacho, Erwin H. Tanin
Finite temperature effects in the Standard Model tend to restore the electroweak symmetry in the early universe, but new fields coupled to the higgs field may as well reverse this…
The trap in the early Universe: impact on the interplay between gravitational waves and LHC physics in the 2HDM
Thomas Biekötter, Sven Heinemeyer, José Miguel No +2
We analyze the thermal history of the 2HDM and determine the parameter regions featuring a first-order electroweak phase transition (FOEWPT) and also much less studied phenomena li…