2018/10/01 by Gaoqing Cao, Shu Lin, Cao, Gaoqing +1
Engineering · Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Astrophysical Phenomena (astro-ph.HE) #Nuclear Theory (nucl-th) #Pulsars and Gravitational Waves Research #Quantum, superfluid, helium dynamics #Superconducting Materials and Applications #astro-ph.HE #gr-qc #nucl-th
paper · pdf · doi:10.48550/arxiv.1810.00528
arxiv created 2018/10/01 · openalex publication_date 2018/10/01 · arxiv updated 2018/10/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this work, we propose a new source for gravitational wave (GW) radiation associated with the quantum chromodynamics (QCD) phase transition in the inner cores of neutron stars. The mechanism is based on the bubble dynamics during the first-order phase transition from nuclear matter to quark matter. We identify the characteristic frequency to be of order ωc∼ 106~\rm rad/s for this kind of sources and the strain magnitude (h∼ 10-24 for a neutron star at a distance of 0.1~\rm Mpc) reachable by future GW detectors. The GW spectra are shown to be useful to check the transition nature at high baryon chemical potential as well as to constrain the radius and density of the inner cores, which are still indistinct up to now.