10 Result(s)
within
Qing-Guo Huang
English
Elementary Particles, Quantum Field Theory
-
Article
Open AccessThe shadow of supertranslated black hole
The supertranslated black hole proposed by Hawking, Perry, and Strominger might provide a resolution to the information paradox, which is usually defined by a complicated space-time metric. In this paper, we f...
-
Article
Open AccessLow-redshift constraints on the Hubble constant from the baryon acoustic oscillation “standard rulers” and the gravitational wave “standard sirens”
The multi-messenger observations of GW170817 indicated a new independent measurement of the Hubble constant ( \(H_0\) ...
-
Article
Open AccessMeasuring the spectral running from cosmic microwave background and primordial black holes
We constrain the spectral running by combining cosmic microwave background (CMB) data, baryon acoustic oscillation (BAO) data and the constraint from primordial black holes (PBHs). We find that the constraint ...
-
Article
Open AccessNew cosmological constraints with extended-Baryon Oscillation Spectroscopic Survey DR14 quasar sample
We update the constraints on the cosmological parameters by adopting the Planck data released in 2015 and baryon acoustic oscillation (BAO) measurements including the new DR14 quasar sample measurement at reds...
-
Article
Open AccessHow the dark energy can reconcile Planck with local determination of the Hubble constant
We try to reconcile the tension between the local 2.4 % determination of Hubble constant and its global determination by Planck CMB data and BAO data through modeling the dark energy variously. We find that the c...
-
Article
Open AccessConstraints on the neutrino mass and mass hierarchy from cosmological observations
Considering the mass splitting between three active neutrinos, we represent the new constraints on the sum of neutrino mass $$\sum m_\...
-
Article
Open AccessThe four-point correlation function of graviton during inflation
We expand the Einstein-Hilbert action with a positive cosmological constant up to the fourth order in terms of gravity fluctuations, and then use the in-in formalism to calculate the four-point correlation fun...
-
Article
Open AccessConstraints on the cosmological parameters from BICEP2, Planck, and WMAP
In this paper we constrain the cosmological parameters, in particular the tilt of tensor power spectrum, by adopting Background Imaging of Cosmic Extragalactic Polarization (B2), Planck released in 2013 and Wi...
-
Article
Open AccessAn analytic calculation of the growth index for \(f(R)\) dark energy model
We derive the analytic formula of the growth index for the \(f(R)\) ...
-
Article
The trouble with asymptotically safe inflation
In this paper we investigate the perturbation theory of asymptotically safe inflation and we find that all modes of gravitational waves perturbation become ghosts in order to achieve a large enough number of e...
