Joshua Eby
YOU?
Author Swipe
View article: Search for fast-oscillating fundamental constants with space missions
Search for fast-oscillating fundamental constants with space missions Open
While it is possible to estimate the dark matter density at the Sun distance from the galactic center, this does not give information on actual dark matter density in the Solar system. There can be considerable local enhancement of dark ma…
View article: Detectability of accretion-induced bosenovae in the Milky Way
Detectability of accretion-induced bosenovae in the Milky Way Open
We estimate collapse rates of axion stars in our galaxy based on the axion minicluster mass function of the Milky Way dark matter halo. We consider axionlike particles (ALP) with different temperature evolution of the axion mass, including…
View article: Multimessenger Astronomy Beyond the Standard Model: New Window from Quantum Sensors
Multimessenger Astronomy Beyond the Standard Model: New Window from Quantum Sensors Open
Ultralight bosonic (ULB) fields with mass $m_ϕ \ll 1$~eV often arise in theories beyond the Standard Model (SM). If such fields exist, violent astrophysical events that result in emission of gravitational wave, photon, or neutrino signals …
View article: Detectability of Accretion-Induced Bosenovae in the Milky Way
Detectability of Accretion-Induced Bosenovae in the Milky Way Open
We estimate collapse rates of axion stars in our galaxy based on the axion minicluster mass function of the Milky Way dark matter halo. We consider axion-like particles with different temperature evolution of the axion mass, including the …
View article: Detection of bosenovae with quantum sensors on Earth and in space
Detection of bosenovae with quantum sensors on Earth and in space Open
In a broad class of theories, the accumulation of ultralight dark matter (ULDM) with particles of mass 10−22 eV<mϕ<1 eV leads to the formation of long-lived bound states known as boson stars. When the ULDM exhibits self-interactions, pro…
View article: Axion relic pockets — a theory of dark matter
Axion relic pockets — a theory of dark matter Open
A bstract We propose a new theory of dark matter based on axion physics and cosmological phase transitions. We show that theories in which a gauge coupling increases through a first-order phase transition naturally result in ‘axion relic p…
View article: Bosenovae with quadratically-coupled scalars in quantum sensing experiments
Bosenovae with quadratically-coupled scalars in quantum sensing experiments Open
A bstract Ultralight dark matter (ULDM) particles of mass m ϕ ≲ 1 eV can form boson stars in DM halos. Collapse of boson stars leads to explosive bosenova emission of copious relativistic ULDM particles. In this work, we analyze the sensit…
View article: Search for fast-oscillating fundamental constants with space missions
Search for fast-oscillating fundamental constants with space missions Open
While it is possible to estimate the dark matter density at the Sun distance from the galactic center, this does not give information on actual dark matter density in the Solar system. There can be considerable local enhancement of dark ma…
View article: Axion Relic Pockets -- a theory of dark matter
Axion Relic Pockets -- a theory of dark matter Open
We propose a new theory of dark matter based on axion physics and cosmological phase transitions. We show that theories in which a gauge coupling increases through a first-order phase transition naturally result in `axion relic pockets': r…
View article: Earth-catalyzed detection of magnetic inelastic dark matter with photons in large underground detectors
Earth-catalyzed detection of magnetic inelastic dark matter with photons in large underground detectors Open
A bstract Inelastic dark matter with moderate splittings, $$ \mathcal{O} $$ (few to 150) keV, can upscatter to an excited state in the Earth, with the excited state subsequently decaying, leaving a distinctive monoenergetic photon signal…
View article: Probing bosonic overdensities with optomechanical sensing
Probing bosonic overdensities with optomechanical sensing Open
Previous work has shown that optomechanical force sensing can be used for efficient detection of ultralight (sub-eV) dark matter candidates. We propose to extend the reach of this method to the search for ultralight dark matter in gravitat…
View article: Terrestrial very-long-baseline atom interferometry: Workshop summary
Terrestrial very-long-baseline atom interferometry: Workshop summary Open
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom i…
View article: OSIRIS-REx constraints on local dark matter and cosmic neutrino profiles
OSIRIS-REx constraints on local dark matter and cosmic neutrino profiles Open
We derive purely gravitational constraints on dark matter and cosmic neutrino profiles in the solar system using asteroid (101955) Bennu. We focus on Bennu because of its extensive tracking data and high-fidelity trajectory modeling result…
View article: Diffuse Axion Background
Diffuse Axion Background Open
Relativistic axions can be readily produced in a broad variety of transient sources, such as axion star bosenova explosions, supernovae or even evaporating primordial black holes. We develop a general framework describing the resulting per…
View article: Detectability of accretion-induced bosenovae in the Milky Way
Detectability of accretion-induced bosenovae in the Milky Way Open
We estimate collapse rates of axion stars in our galaxy based on the axion minicluster mass function of the Milky Way dark matter halo. We consider axion-like particles with different temperature evolution of the axion mass, including the …
View article: Earth-Catalyzed Detection of Magnetic Inelastic Dark Matter with Photons in Large Underground Detectors
Earth-Catalyzed Detection of Magnetic Inelastic Dark Matter with Photons in Large Underground Detectors Open
Inelastic dark matter with moderate splittings, $\mathcal{O}({\rm few} \; {\rm to} \; 150)$ keV, can upscatter to an excited state in the Earth, with the excited state subsequently decaying, leaving a distinctive monoenergetic photon signa…
View article: A generic formation mechanism of ultralight dark matter solar halos
A generic formation mechanism of ultralight dark matter solar halos Open
As-yet undiscovered light bosons may constitute all or part of the dark matter (DM) of our Universe, and are expected to have (weak) self-interactions. We show that the quartic self-interactions generically induce the capture of dark matte…
View article: Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary
Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary Open
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom i…
View article: Probing Bosonic Overdensities with Optomechanical Sensing
Probing Bosonic Overdensities with Optomechanical Sensing Open
Previous work has shown that optomechanical force sensing can be used for efficient detection of ultralight (sub-eV) dark matter candidates. We propose to extend the reach of this method to the search for ultralight dark matter in gravitat…
View article: Detection of Bosenovae with Quantum Sensors on Earth and in Space
Detection of Bosenovae with Quantum Sensors on Earth and in Space Open
In a broad class of theories, the accumulation of ultralight dark matter (ULDM) with particles of mass $10^{-22}~\textrm{eV} < m_ϕ < 1~\textrm{eV}$ leads the to formation of long-lived bound states known as boson stars. When the ULDM exhib…
View article: A Generic Formation Mechanism of Ultralight Dark Matter Solar Halos
A Generic Formation Mechanism of Ultralight Dark Matter Solar Halos Open
As-yet undiscovered light bosons may constitute all or part of the dark matter (DM) of our Universe, and are expected to have (weak) self-interactions. We show that the quartic self-interactions generically induce the capture of dark matte…
View article: What can a GNOME do? Search targets for the Global Network of Optical Magnetometers for Exotic physics searches
What can a GNOME do? Search targets for the Global Network of Optical Magnetometers for Exotic physics searches Open
Numerous observations suggest that there exist undiscovered beyond-the-Standard-Model particles and fields. Because of their unknown nature, these exotic particles and fields could interact with Standard Model particles in many different w…
View article: New Constraints on Dark Matter and Cosmic Neutrino Profiles through Gravity
New Constraints on Dark Matter and Cosmic Neutrino Profiles through Gravity Open
We derive purely gravitational constraints on dark matter and cosmic neutrino profiles in the solar system using asteroid (101955) Bennu. We focus on Bennu because of its extensive tracking data and high-fidelity trajectory modeling result…
View article: From axion quality and naturalness problems to a high-quality $\mathbb{Z}_{N}$ QCD relaxion
From axion quality and naturalness problems to a high-quality $\mathbb{Z}_{N}$ QCD relaxion Open
We highlight general issues associated with quality and naturalness problems in theories of light QCD-axions, axion-like particles, and relaxions. We show the presence of Planck-suppressed operators generically lead to scalar coupling of a…
View article: New Constraints on Dark Matter and Cosmic Neutrino Profiles through Gravity
New Constraints on Dark Matter and Cosmic Neutrino Profiles through Gravity Open
We derive purely gravitational constraints on dark matter and cosmic neutrino profiles in the solar system using asteroid (101955) Bennu. We focus on Bennu because of its extensive tracking data and high-fidelity trajectory modeling result…
View article: Decay of ultralight axion condensates
Decay of ultralight axion condensates Open
Axion particles can form macroscopic condensates, whose size can be galactic in scale for models with very small axion masses $m\\sim10^{-22}$ eV, and which are sometimes referred to under the name of Fuzzy Dark Matter. Many analyses of th…
View article: Collapse of axion stars
Collapse of axion stars Open
Axion stars, gravitationally bound states of low-energy axion particles, have a maximum mass allowed by gravitational stability. Weakly bound states obtaining this maximum mass have sufficiently large radii such that they are dilute, and a…
View article: QCD axion star collapse with the chiral potential
QCD axion star collapse with the chiral potential Open
In a previous study, we analyzed collapsing axion stars using the low-energy instanton potential, showing that the total energy is always bounded and that collapsing axion stars do not form black holes. In this paper, we provide a proof th…