6 papers
A directional force template for quadratically coupled ultralight dark matter
Dawid Brzeminski, Aaron Pierce
Quadratic couplings between ultralight scalar dark matter and Standard Model fields can produce a distorted dark-matter field profile around the Earth. Gradients in the field induc…
A Bandpass Axion Or: How I Learned To Stop Worrying About Stars And Love The Lab
Dawid Brzeminski, Anson Hook
Axion-like particles coupled to photons are one of the most compelling new physics scenarios. We demonstrate that an axion-photon coupling resulting from a non-anomalous PQ symmetr…
Narrowing Down Sources of High-Frequency Gravitational Waves
Asher Berlin, Dawid Brzeminski, Erwin H. Tanin
Detecting gravitational waves above 100 kHz would constitute a major discovery, as any observable signal would have to arise from new physics within the late universe. Although man…
Searching for Ultralight Scalar Dark Matter with Clocks in Low Earth Orbit
Dawid Brzeminski, Aaron Pierce
The density of ultralight dark matter can be modified in the vicinity of macroscopic bodies when the dark matter possesses quadratic couplings to the Standard Model. If these coupl…
Predicting the Dark Matter -- Baryon Abundance Ratio
Abhishek Banerjee, Dawid Brzeminski, Anson Hook
We discuss relaxation solutions to the dark matter - baryon coincidence problem in the context of QCD axion dark matter. In relaxation solutions, a moduli dynamically adjusts the m…
Searching for String Bosenovas with Gravitational Wave Detectors
Dawid Brzeminski, Anson Hook, Junwu Huang +1
We study the phenomenology of string bosenova explosions in vector superradiance clouds around spinning black holes, focusing on the observable consequences in gravitational wave d…