54 citations · 122 across the 7 of their papers we have counts for
7 papers
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…
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…
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…
Phenomenology of wavelike vector dark matter nonminimally coupled to gravity
Hong-Yi Zhang, Siyang Ling
We study three astrophysical/cosmological consequences of nonminimal couplings to gravity in wavelike vector dark matter. In the nonrelativistic limit, the nonminimal coupling with…
Cosmological gravitational particle production of massive spin-2 particles
Edward W. Kolb, Siyang Ling, Andrew J. Long +1
The phenomenon of cosmological gravitational particle production (CGPP) is expected to occur during the period of inflation and the transition into a hot big bang cosmology. Partic…
An analytic evaluation of gravitational particle production of fermions via Stokes phenomenon
Soichiro Hashiba, Siyang Ling, Andrew J. Long
The phenomenon of gravitational particle production can take place for quantum fields in curved spacetime. The abundance and energy spectrum of gravitationally produced particles i…
Superheavy scalar dark matter from gravitational particle production in -attractor models of inflation
Siyang Ling, Andrew J. Long
We study the phenomenon of gravitational particle production as applied to a scalar spectator field in the context of -attractor inflation. Assuming that the scalar has a minima…