236 citations · 845 across the 21 of their papers we have counts for
16 papers · 1 filter
DeepInflation: an AI agent for research and model discovery of inflation
Ze-Yu Peng, Hao-Shi Yuan, Qi Lai +4
We present DeepInflation, an AI agent designed for research and model discovery in inflationary cosmology. Built upon a multi-agent architecture, DeepInflation integrates Large Lan…
Towards primordial gravitational waves and in light of BICEP/Keck, DESI BAO and Hubble tension
Hao Wang, Gen Ye, Jun-Qian Jiang +1
Recent observational data seem to show a evidence for an evolving dark energy (DE) against the cosmological constant, so the standard CDM model. In this paper, we p…
Impact of evolving dark energy on the search for primordial gravitational waves
Hao Wang, Gen Ye, Yun-Song Piao
Recent data seem to suggest a preference for the evolving dark energy (DE). However, if the case is actually so, and not caused by unknown systematics in data, it might impact our…
Pulsar timing array observations as possible hints for nonsingular cosmology
Mian Zhu, Gen Ye, Yong Cai
Recent pulsar timing array (PTA) experiments have reported strong evidence of the stochastic gravitational wave background (SGWB). If interpreted as primordial gravitational waves…
Broken blue-tilted inflationary gravitational waves: a joint analysis of NANOGrav 15-year and BICEP/Keck 2018 data
Jun-Qian Jiang, Yong Cai, Gen Ye +1
Recently, the pulsar timing array (PTA) collaborations have reported the evidence for a stochastic gravitational wave background (SGWB) at nano-Hertz band. The spectrum of inflatio…
Can the gravitational wave background feel wiggles in spacetime?
Gen Ye, Alessandra Silvestri
Recently the international pulsar timing array collaboration has announced the first strong evidence for an isotropic gravitational wave background (GWB). We propose that rapid sma…
Shape of CMB lensing in the early dark energy cosmology
Gen Ye, Jun-Qian Jiang, Yun-Song Piao
Recently, the cosmological tensions, and in particular, have inspired modification of both pre- and postrecombination physics simultaneously. Early dark energy is a pro…
Impact of the Hubble tension on the - contour
Jun-Qian Jiang, Gen Ye, Yun-Song Piao
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 towards ,…
Return of Harrison-Zeldovich spectrum in light of recent cosmological tensions
Jun-Qian Jiang, Gen Ye, Yun-Song Piao
The spectral index of scalar perturbation is the significant initial condition set by inflation theory for our observable Universe. According to Planck results, current const…
Towards hybrid inflation with in light of Hubble tension and primordial gravitational waves
Gen Ye, Jun-Qian Jiang, Yun-Song Piao
Recently, it has been found that complete resolution of the Hubble tension might point to a scale-invariant Harrison-Zeldovich spectrum of primordial scalar perturbation, i.e. $n_s…
Improved constraint on primordial gravitational waves in light of the Hubble tension and BICEP/Keck
Gen Ye, Yun-Song Piao
The Hubble tension that the standard CDM model is suffering from can be resolved with pre-recombination early dark energy. We present the first constraint on the tensor-to-scala…
Alleviating both and tensions: early dark energy lifts the CMB-lockdown on ultralight axion
Gen Ye, Jun Zhang, Yun-Song Piao
The existence of ultralight axion (ULA) with mass is not favored by the CMB observations in the standard CDM model. We show that the inclusion…
Implication of the Hubble tension for the primordial Universe in light of recent cosmological data
Gen Ye, Bin Hu, Yun-Song Piao
In prerecombination resolutions of the Hubble tension, such as early dark energy, new physics before recombination shifts the values of relevant cosmological parameters so that the…
Is the NANOGrav signal a hint of dS decay during inflation?
Hao-Hao Li, Gen Ye, Yun-Song Piao
As suggested by the swampland conjectures, de Sitter (dS) space might be highly unstable if it exists at all. During inflation, the short-lived dS states will decay through a casca…
censorship of early dark energy and AdS vacua
Gen Ye, Yun-Song Piao
Present-day temperature of cosmic microwave background has been precisely measured by the FIRAS experiment. We identify that the early dark energy (EDE) (non-negligible aroun…
Is the Hubble tension a hint of AdS phase around recombination?
Gen Ye, Yun-Song Piao
Anti-de Sitter (AdS) vacua, being theoretically important, might have an unexpected impact on the observable universe. We find that in early dark energy (EDE) scenarios the existen…