Induced gravitational waves as a cosmological probe of the sound speed during the QCD phase transition

• Published in: arXiv.org
• Main Authors: Abe, Katsuya T, Tada, Yuichiro, Ueda, Ikumi
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 13.10.2020
• Subjects: Arrays; Astronomical models; Cosmology; Equations of state; Frequency ranges; Gravitation; Gravitational waves; Invariants; Particle physics; Perturbation; Phase transitions; Physics - Cosmology and Nongalactic Astrophysics; Physics - High Energy Physics - Phenomenology; Plasmas (physics); Pulsars; Quantum chromodynamics; Sound; Standard model (particle physics); Wave propagation

The standard model of particle physics is known to be intriguingly successful. However their rich phenomena represented by the phase transitions (PTs) have not been completely understood yet, including the possibility of the existence of unknown dark sectors. In this Letter, we investigate the measu...