38 citations · 126 across the 8 of their papers we have counts for
8 papers
Gravitational waves induced by massless vector fields with non-minimal coupling to gravity
Kaixi Feng
In this paper, we calculate the contribution of the late time mode of a massless vector field to the power spectrum of the primordial gravitational wave using retarded Green's prop…
Reheating mechanism of Curvaton with Nonminimal Derivative Coupling to Gravity
Taotao Qiu, Kaixi Feng
In this paper, we continue our study on the curvaton model with nonminimal derivative coupling (NDC) to Einstein gravity proposed in our previous work, focusing on the reheating me…
Gravitational waves induced by spinor fields
Kaixi Feng, Yun-Song Piao
In realistic model-building, spinor fields with various masses are present. During inflation, spinor field may induce gravitational waves as a second order effect. In this paper, w…
Curvaton with Nonminimal Derivative Coupling to Gravity II: Full Perturbation Analysis
Kaixi Feng, Taotao Qiu
In our previous work \cite{Feng:2013pba}, we have shown a curvaton model where the curvaton has a nonminimal derivative coupling to gravity. Such a coupling could bring us scale-in…
Curvaton with nonminimal derivative coupling to gravity
Kaixi Feng, Taotao Qiu, Yun-Song Piao
We show a curvaton model, in which the curvaton has a nonminimal derivative coupling to gravity. Thanks to such a coupling, we find that the scale-invariance of the perturbations c…
IR Divergence in Inflationary Tensor Perturbations from Fermion Loops
Kaixi Feng, Yi-Fu Cai, Yun-Song Piao
We estimate fermion loop corrections to the two-point correlation function of primordial tensor perturbations in a slow-roll inflationary background. We particularly compute an exp…
Derivation of Electroweak Chiral Lagrangian from One Family Technicolor Model
Hong-Hao Zhang, Kai-Xi Feng, Shao-Zhou Jiang +1
Based on previous studies deriving the chiral Lagrangian for pseudo scalar mesons from the first principle of QCD in the path integral formalism, we derive the electroweak chiral L…
A Note on analytic formulas of Feynman propagators in position space
Hong-Hao Zhang, Kai-Xi Feng, Si-Wei Qiu +2
In this paper, we correct an inaccurate result of previous works on the Feynman propagator in position space of a free Dirac field in (3+1)-dimensional spacetime, and we derive the…