231 citations · 492 across the 12 of their papers we have counts for
12 papers
ESO White Paper on Intensity Interferometry: Cosmology, Fundamental Physics, Quantum Optics
Robin Kaiser, William Guerin, Farrokh Vakili +21
In this whitepaper, we outline how recent technological advances and ongoing developments open qualitatively new science opportunities in cosmology, fundamental physics, and quantu…
Superradiant Interactions for Relic Detection with Entangled Nuclear Spins
Marios Galanis, Onur Hosten, Asimina Arvanitaki +1
We recently showed that macroscopic nuclear spin ensembles prepared in coherent spin states can dramatically enhance the interaction rates of weakly interacting cosmic relics-such…
Superradiant Interactions of the Cosmic Neutrino Background, Axions, Dark Matter, and Reactor Neutrinos
Asimina Arvanitaki, Savas Dimopoulos, Marios Galanis
In this paper we do three things. First, we outline the conditions under which the interaction rate of inelastic processes that change the internal state of a system of targets…
Observational prospects of self-interacting scalar superradiance with next-generation gravitational-wave detectors
Spencer Collaviti, Ling Sun, Marios Galanis +1
Current- and next-generation gravitational-wave observatories may reveal new, ultralight bosons. Through the superradiance process, these theoretical particle candidates can form c…
Probing and resolving AGN disks with ultrafast photon counters
Neal Dalal, Marios Galanis, Charles Gammie +2
Intensity interferometry is a technique developed many decades ago, that has recently enjoyed a renaissance thanks in part to advances in photodetector technology. We investigate t…
Extended-Path Intensity Correlation: Microarcsecond Astrometry with an Arcsecond Field of View
Marios Galanis, Ken Van Tilburg, Masha Baryakhtar +1
We develop in detail a recently proposed optical-path modification of astronomical intensity interferometers. Extended-Path Intensity Correlation (EPIC) introduces a tunable path e…
Astrometry with Extended-Path Intensity Correlation
Ken Van Tilburg, Masha Baryakhtar, Marios Galanis +1
Intensity interferometry -- the correlation of spatially separated light intensities -- has historically been an important tool for precision optical astronomical observations. How…
Dark Matter In Extreme Astrophysical Environments
Masha Baryakhtar, Regina Caputo, Djuna Croon +37
Exploring dark matter via observations of extreme astrophysical environments -- defined here as heavy compact objects such as white dwarfs, neutron stars, and black holes, as well…
Dark matter scattering in astrophysical media: collective effects
William DeRocco, Marios Galanis, Robert Lasenby
It is well-known that stars have the potential to be excellent dark matter detectors. Infalling dark matter that scatters within stars could lead to a range of observational signat…
Dark QED from Inflation
Asimina Arvanitaki, Savas Dimopoulos, Marios Galanis +3
One contribution to any dark sector's abundance comes from its gravitational production during inflation. If the dark sector is weakly coupled to the inflaton and the Standard Mode…
Black hole superradiance of self-interacting scalar fields
Masha Baryakhtar, Marios Galanis, Robert Lasenby +1
Black hole superradiance is a powerful probe of light, weakly-coupled hidden sector particles. Many candidate particles, such as axions, generically have self-interactions that can…
The Large-Misalignment Mechanism for the Formation of Compact Axion Structures: Signatures from the QCD Axion to Fuzzy Dark Matter
Asimina Arvanitaki, Savas Dimopoulos, Marios Galanis +3
Axions are some of the best motivated particles beyond the Standard Model. We show how the attractive self-interactions of dark matter (DM) axions over a broad range of masses, fro…