3 papers
gr-qc2026
Nonlinear tails in the Kerr black hole ringdown
Siyang Ling, Sam S. C. Wong
Power law tails induced by nonlinearities of General Relativity (``sourced'' or ``nonlinear'' tails) were recently shown to dominate the late time waveform of Schwarzschild black h…
hep-th2025
Superheavy Dark Matter from the String Theory Axiverse
Siyang Ling, Andrew J. Long, Evan McDonough +1
We propose heavy axions as a natural superheavy dark matter candidate in string theory, with the relic density of dark matter originating in quantum fluctuations during cosmic infl…
astro-ph.CO2024
Free Streaming in Warm Wave Dark Matter
Siyang Ling, Mustafa A. Amin
We provide a framework for numerically computing the effects of free-streaming in scalar fields produced after inflation. First, we provide a detailed prescription for setting up i…