
Javier F. Acevedo
Research Associate-Theoretical, SLAC National Accelerator Laboratory
Education & Certifications
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PhD, Queen's University, Physics (2022)
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Undergrad, Universidad Nacional de Mar del Plata, Physics (2017)
Work Experience
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Research Associate, SLAC National Accelerator Laboratory (October 1, 2022 - Present)
Elementary Particle Theory Group, Fundamental Physics Directorate.
Location
Menlo Park CA
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Research Associate, Queen's University (May 1, 2022 - September 30, 2022)
Dept. of Physics, Eng. Physics and Astronomy & McDonald Institute for Astroparticle Physics
Location
Kingston, ON, Canada
All Publications
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Evaporation Barrier for Dark Matter in Celestial Bodies
arXiv e-print.
2023
20
Abstract
The minimum testable dark matter (DM) mass for almost all DM signatures in celestial bodies is determined by the rate at which DM evaporates. DM evaporation has previously been calculated assuming a competition between the gravitational potential of the object, and thermal kicks from the celestial-body matter. We point out a new effect, where mediators with a range larger than the interparticle spacing induce a force proportional to the density gradient of celestial objects, forming an evaporation barrier for the DM. This effect can be so significant that evaporation does not occur even for sub-MeV DM, in stark contrast to previous calculations. This opens up a wide range of new light DM searches, many orders of magnitude in DM mass below the sensitivity of direct detection.
arXiv e-print: 2303.01516 -
Accelerating composite dark matter discovery with nuclear recoils and the Migdal effect
PHYSICAL REVIEW D
2022; 105 (2)
View details for DOI 10.1103/PhysRevD.105.023012
View details for Web of Science ID 000743871300006
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Warming nuclear pasta with dark matter: kinetic and annihilation heating of neutron star crusts
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2020
View details for DOI 10.1088/1475-7516/2020/03/038
View details for Web of Science ID 000528029100039
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Mineral Detection of Neutrinos and Dark Matter. A whitepaper
arXiv
2023: 113
View details for DOI 10.48550/arXiv.2301.07118
- Milky Way White Dwarfs as Sub-GeV to Multi-TeV Dark Matter Detectors arXiv. 2023 29
- Dark Matter-Induced Baryonic Feedback in Galaxies arXiv. 2023 17
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Diffuse x-ray and gamma-ray limits on boson stars that interact with nuclei
Journal of Cosmology and Astroparticle Physics
2022
View details for DOI 10.1088/1475-7516/2022/12/031
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Nuclear fusion inside dark matter
PHYSICAL REVIEW D
2021; 103 (12)
View details for DOI 10.1103/PhysRevD.103.123022
View details for Web of Science ID 000664530200004
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Dark matter, destroyer of worlds: neutrino, thermal, and existential signatures from black holes in the Sun and Earth
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2021
View details for DOI 10.1088/1475-7516/2021/04/026
View details for Web of Science ID 000644501000001
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Old Rocks, New Limits: Excavated Ancient Mica Searches For Dark Matter
arXiv e-print.
2021
21 pages, 4 figures
Abstract
Minerals excavated from the Earth's crust contain gigayear-long astroparticle records, which can be read out using acid etching and microscopy, providing unmatched sensitivity to high mass dark matter. A roughly millimetre size slab of 500 million year old muscovite mica, calibrated and analyzed by Snowden-Ifft et al.~in 1990, revealed no signs of dark matter recoils and placed competitive limits on the nuclear interactions for sub-TeV mass dark matter. A different analysis of larger mica slabs in 1986 by Price and Salamon searched for strongly interacting monopoles. After implementing a detailed treatment of Earth's overburden, we utilize these ancient etched mica data to obtain new bounds on high mass dark matter interactions with nuclei.
arXiv e-print: 2105.06473 -
Supernovae sparked by dark matter in white dwarfs
PHYSICAL REVIEW D
2019; 100 (4)
View details for DOI 10.1103/PhysRevD.100.043020
View details for Web of Science ID 000482088100001
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Front propagation dynamics: Qualitative differences revealed by very high intensity fluctuations
PHYSICAL REVIEW E
2018; 98 (5)
View details for DOI 10.1103/PhysRevE.98.052213
View details for Web of Science ID 000450141800003
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Limiting the stroke of a Schmitt trigger with multiplicative noise
PHYSICAL REVIEW E
2017; 95 (5): 052143
Abstract
We have devised an experiment whereby a bistable system is confined away from its deterministic attractors by means of multiplicative noise. Together with previous numerical results, our experimental results validate the hypothesis that the higher the slope of the noise's multiplicative factor, the more it shifts the stationary states.
View details for DOI 10.1103/PhysRevE.95.052143
View details for Web of Science ID 000402019600005
View details for PubMedID 28618519