224 citations · 603 across the 16 of their papers we have counts for
16 papers
SEAL - A Symmetry EncourAging Loss for High Energy Physics
Pradyun Hebbar, Thandikire Madula, Vinicius Mikuni +3
Physical symmetries provide a strong inductive bias for constructing functions to analyze data. In particular, this bias may improve robustness, data efficiency, and interpretabili…
Decoupled Weight Decay for Any Norm
Nadav Joseph Outmezguine, Noam Levi
With the success of deep neural networks (NNs) in a variety of domains, the computational and storage requirements for training and deploying large NNs have become a bottleneck for…
Probing New Physics at Cosmic Dawn with 21-cm Cosmology
Omer Zvi Katz, Nadav Outmezguine, Diego Redigolo +1
21-cm cosmology provides an exciting opportunity to probe new physics dynamics in the early universe. In particular, a tiny sub-component of dark matter that interacts strongly wit…
On the Late-Time Evolution of Velocity-Dependent Self-Interacting Dark Matter Halos
Sophia Gad-Nasr, Kimberly K. Boddy, Manoj Kaplinghat +2
We study the evolution of isolated self-interacting dark matter (SIDM) halos that undergo gravothermal collapse and are driven deep into the short-mean-free-path regime. We assume…
Anticipating a New-Physics Signal in Upcoming 21-cm Power Spectrum Observations
Rennan Barkana, Anastasia Fialkov, Hongwan Liu +1
Dark matter-baryon interactions can cool the baryonic fluid, which has been shown to modify the cosmological 21-cm global signal. We show that in a two-component dark sector with a…
The Irreducible Axion Background
Kevin Langhoff, Nadav Joseph Outmezguine, Nicholas L. Rodd
Searches for dark matter decaying into photons constrain its lifetime to be many orders of magnitude larger than the age of the Universe. A corollary statement is that the abundanc…
Snowmass Theory Frontier: Astrophysics and Cosmology
Daniel Green, Joshua T. Ruderman, Benjamin R. Safdi +84
We summarize progress made in theoretical astrophysics and cosmology over the past decade and areas of interest for the coming decade. This Report is prepared as the TF09 "Astrophy…
Universal gravothermal evolution of isolated self-interacting dark matter halos for velocity-dependent cross sections
Nadav Joseph Outmezguine, Kimberly K. Boddy, Sophia Gad-Nasr +2
We study the evolution of isolated self-interacting dark matter (SIDM) halos using spherically-symmetric gravothermal equations allowing for the scattering cross section to be velo…
Early-Universe Model Building
Pouya Asadi, Saurabh Bansal, Asher Berlin +37
Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as w…
Detection Prospects of Local Super-Massive Black Holes Based on the Sloan-Digital Sky Survey
Nadav Joseph Outmezguine, Fabio Pacucci, Abraham Loeb
We use the Sloan-Digital Sky Survey quasar catalog to statistically infer the local abundance of black holes heavier than , which allows us to estimate the detection p…
Heavy Thermal Relics from Zombie Collisions
Eric David Kramer, Eric Kuflik, Noam Levi +2
We propose a new thermal freezeout mechanism which results in dark matter masses exceeding the unitarity bound by many orders of magnitude, without violating perturbative unitarity…
A Preference for Cold Dark Matter over Superfluid Dark Matter in Local Milky Way Data
Mariangela Lisanti, Matthew Moschella, Nadav Joseph Outmezguine +1
There are many well-known correlations between dark matter and baryons that exist on galactic scales. These correlations can essentially be encompassed by a simple scaling relation…
Reviving Millicharged Dark Matter for 21-cm Cosmology
Hongwan Liu, Nadav Joseph Outmezguine, Diego Redigolo +1
The existence of millicharged dark matter (mDM) can leave a measurable imprint on 21-cm cosmology through mDM-baryon scattering. However, the minimal scenario is severely constrain…
Testing Dark Matter and Modifications to Gravity using Local Milky Way Observables
Mariangela Lisanti, Matthew Moschella, Nadav Joseph Outmezguine +1
Galactic rotation curves are often considered the first robust evidence for the existence of dark matter. However, even in the presence of a dark matter halo, other galactic-scale…
Accretion of Dissipative Dark Matter onto Active Galactic Nuclei
Nadav Joseph Outmezguine, Oren Slone, Walter Tangarife +2
We examine the possibility that accretion of Dissipative Dark Matter (DDM) onto Active Galactic Nuclei (AGN) contributes to the growth rate of Super Massive Black Holes (SMBHs). Su…
Signs of Dark Matter at 21-cm?
Rennan Barkana, Nadav Joseph Outmezguine, Diego Redigolo +1
Recently the EDGES collaboration reported an anomalous absorption signal in the sky-averaged 21-cm spectrum around . Such a signal may be understood as an indication for an u…