426 citations · 6.2k across the 138 of their papers we have counts for
35 papers · 1 filter
Oscillons during Dirac-Born-Infeld Preheating
Yu Sang, Qing-Guo Huang
Oscillons are long-lived, localized, oscillating nonlinear excitations of a real scalar field which can be abundantly produced during preheating after inflation. We give the first…
Power-law modulation of the scalar power spectrum from a heavy field with a monomial potential
Qing-Guo Huang, Shi Pi
The effects of heavy fields modulate the scalar power spectrum during inflation. We analytically calculate the modulations of the scalar power spectrum from a heavy field with a se…
On the uniqueness of the non-minimal matter coupling in massive gravity and bigravity
Qing-Guo Huang, Raquel H. Ribeiro, Yu-Hang Xing +2
In de Rham-Gabadadze-Tolley (dRGT) massive gravity and bigravity, a non-minimal matter coupling involving both metrics generically re-introduces the Boulware--Deser (BD) ghost. A n…
The four-point correlation function of graviton during inflation
Tian-Fu Fu, Qing-Guo Huang
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 t…
A polynomial f(R) inflation model
Qing-Guo Huang
Motivated by the ultraviolet complete theory of quantum gravity, for example the string theory, we investigate a polynomial inflation model in detail. We calculate the spec…
Generalized massive gravity in arbitrary dimensions and its Hamiltonian formulation
Qing-Guo Huang, Ke-Chao Zhang, Shuang-Yong Zhou
We extend the four-dimensional de Rham-Gabadadze-Tolley (dRGT) massive gravity model to a general scalar massive-tensor theory in arbitrary dimensions, coupling a dRGT massive grav…