#physics #gravitational_waves #nonlinear #parametric_resonance #china #japan #global #future
Breakthrough in the nonlinear generation of primordial gravitational waves
https://phys.org/news/2022-01-breakthrough-nonlinear-primordial-gravitational.html
In a Physics Review Letters paper published on Dec 15th, an international research team, led by Cai Yifu, professor of the University of Science and Technology of China, and his collaborators discovered the hypothetical possibility of resonantly generated primordial gravitational waves within high-energy physics when the universe was in its infancy. The originally invisible gravitational wave signals can be amplified by parametric resonance by four to six orders of magnitude or even larger via this phenomenon, and can then be probed by primordial gravitational wave detectors, validating theoretical models of the early universe that are inaccessible through traditional observational windows.
Hacker News
Ian Kenway