Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Gen Ye"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-23 (2024)
Abstract Recently, evidence of stochastic gravitational wave background (SGWB) signals observed by pulsar timing array (PTA) collaborations, has prompted investigations into their origins. We explore the compatibility of a proposed inflationary scena
Externí odkaz:
https://doaj.org/article/b4f676b734d1435683a5013af7db23ed
Publikováno v:
Physics Letters B, Vol 851, Iss , Pp 138588- (2024)
The injection of early dark energy (EDE) before the recombination, a possible resolution of the Hubble tension, will not only shift the scalar spectral index ns towards ns=1, but also be likely to tighten the current upper limit on tensor-to-scalar r
Externí odkaz:
https://doaj.org/article/1966c1b5e48f448ebe74e6b621cb4697
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 9, Pp 1-9 (2023)
Abstract Recent pulsar timing array (PTA) experiments have reported strong evidence of the stochastic gravitational wave background (SGWB). If interpreted as primordial gravitational waves (GWs), the signal favors a strongly blue-tilted spectrum. Con
Externí odkaz:
https://doaj.org/article/a153f12be0d140febb5cbdaf1952c98e
Autor:
Gen Ye, Alessandra Silvestri
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 1, p L15 (2024)
Recently the international pulsar timing array collaboration has announced the first strong evidence for an isotropic gravitational-wave background (GWB). We propose that rapid small oscillations (wiggles) in the Hubble parameter would trigger a reso
Externí odkaz:
https://doaj.org/article/5f9ba780e5254520aa4c8829c6f4e6b0
Publikováno v:
Physics Letters B, Vol 839, Iss , Pp 137770- (2023)
The existence of ultralight axion (ULA) with mass O(10−26eV) is not favored by the CMB observations in the standard ΛCDM model. We show that the inclusion of early dark energy (EDE) will lift the CMB-lockdown on such ULA, and possibly other forms
Externí odkaz:
https://doaj.org/article/50050f9ab97f4f9ebacd3bd78743e6b3
Autor:
Gen Ye, Yun-Song Piao
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-11 (2020)
Abstract Requiring the existence of a unitary, causal and local UV-completion places a set of positivity bounds on the corresponding effective field theories (EFTs). We discuss the obstructions and possibility in applying the positivity bound to cosm
Externí odkaz:
https://doaj.org/article/1b474f52cccd4b6a9f0d711dac855d4b
Publikováno v:
Neural Regeneration Research, Vol 15, Iss 3, Pp 464-472 (2020)
Mitochondrial dysfunction in neurons has been implicated in hypoxia-ischemia-induced brain injury. Although mesenchymal stem cell therapy has emerged as a novel treatment for this pathology, the mechanisms are not fully understood. To address this is
Externí odkaz:
https://doaj.org/article/329da9c22ea84c7f8e548ff38b80a678
Soluble Nogo receptor 1 fusion protein protects neural progenitor cells in rats with ischemic stroke
Publikováno v:
Neural Regeneration Research, Vol 14, Iss 10, Pp 1755-1764 (2019)
Soluble Nogo66 receptor-Fc protein (sNgR-Fc) enhances axonal regeneration following central nervous system injury. However, the underlying mechanisms remain unclear. In this study, we investigated the effects of sNgR-Fc on the proliferation and diffe
Externí odkaz:
https://doaj.org/article/668267d976ae4a83bd9246ab27c3db26
Publikováno v:
BMC Medical Research Methodology, Vol 18, Iss 1, Pp 1-13 (2018)
Abstract Background The main purpose of dose-finding studies in Phase I trial is to estimate maximum tolerated dose (MTD), which is the maximum test dose that can be assigned with an acceptable level of toxicity. Existing methods developed for single
Externí odkaz:
https://doaj.org/article/ea2efeb320b94d2eb0a1122ff1abc4c1
Publikováno v:
Physics Letters B, Vol 816, Iss , Pp 136211- (2021)
The NANOGrav collaboration recently has reported evidence for a stochastic common-spectrum process in its 12.5 yr dataset. We show that such a signal might be a hint of de Sitter (dS) decay during inflation. As suggested by the swampland conjectures,
Externí odkaz:
https://doaj.org/article/a4bcd1884bf9438e9391c367eb74424d