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pro vyhledávání: '"SHAO Jiang"'
Recent reports of stochastic gravitational wave background from four independent pulsar-timing-array collaborations have renewed the interest in the cosmological gravitational wave background (CGWB), which is expected to open a new window into the ea
Externí odkaz:
http://arxiv.org/abs/2410.17721
The recently identified intercept $a_B$ tension of supernova (SN) magnitude-redshift relation between local ($z<0.0233$) and late-time ($z>0.0233$) Universe hints for either local-scale new physics or systematics. By comparing the intercepts of diffe
Externí odkaz:
http://arxiv.org/abs/2410.06053
Cosmological first-order phase transitions (FOPTs) serve as comprehensive probes into our early Universe with associated generations of stochastic gravitational waves and superhorizon curvature perturbations or even primordial black holes. In charact
Externí odkaz:
http://arxiv.org/abs/2409.20045
Primordial black holes (PBHs) may form before cosmological first-order phase transitions, leading to inevitable collisions between PBHs and bubble walls. In this Letter, we have simulated for the first time the co-evolution of an expanding scalar wal
Externí odkaz:
http://arxiv.org/abs/2406.05838
Publikováno v:
JCAP 10 (2024) 045
First-order primordial curvature perturbations are known to induce gravitational waves at the second-order, which can in turn probe the small-scale curvature perturbations near the end of the inflation. In this work, we extend the previous analysis i
Externí odkaz:
http://arxiv.org/abs/2406.05034
Publikováno v:
Sci. China Phys. Mech. Astron. 67, 290411 (2024)
Recently, much attention has been focused on the false vacuum islands that are flooded by an expanding ocean of true-vacuum bubbles slightly later than most of the other parts of the world. These delayed decay regions will accumulate locally larger v
Externí odkaz:
http://arxiv.org/abs/2404.06506
The standard model of modern cosmology might be cracked by the recent persistent hot debate on the Hubble-constant ($H_0$) tension, which manifests itself as the sound-horizon ($r_s$) tension or absolute-magnitude ($M_B$) tension if deeming the origi
Externí odkaz:
http://arxiv.org/abs/2401.14170
Recent detections of a low-frequency gravitational wave background (GWB) from various pulsar-timing-array (PTA) observations have renewed the interest in the inspiraling supermassive black hole binaries (SMBHBs), whose population is believed to be th
Externí odkaz:
http://arxiv.org/abs/2312.14041
Publikováno v:
Phys. Rev. D 109 (2024) 9, 096012
The strongly coupled system like the quark-hadron transition (if it is of first order) is becoming an active play yard for the physics of cosmological first-order phase transitions. However, the traditional field theoretic approach to strongly couple
Externí odkaz:
http://arxiv.org/abs/2311.07347
Autor:
Fu, Chengjie, Wang, Shao-Jiang
Publikováno v:
Phys. Rev. D 109 (2024) L041304
Recent attempts to fully resolve the Hubble tension from early dark energy models seem to favor a primordial Harrison-Zeldovich universe with its scalar spectrum being extremely scale invariant. Restoring the Harrison-Zeldovich spectrum within the si
Externí odkaz:
http://arxiv.org/abs/2310.12932