107 citations · 170 across the 4 of their papers we have counts for
4 papers
Hawking-Moss Tunneling in Noncommutative Eternal Inflation
Yi-Fu Cai, Yi Wang
The quantum behavior of noncommutative eternal inflation is quite different from the usual knowledge. Unlike the usual eternal inflation, the quantum fluctuation of noncommutative…
Null Energy Condition and Dark Energy Models
Taotao Qiu, Yi-Fu Cai, Xin-Min Zhang
Null Energy Condition (NEC) requires the equation of state (EoS) of the universe satisfy , which implies, for instance in a universe with matter and dark energy do…
Constraints on the Sound Speed of Dynamical Dark Energy
Jun-Qing Xia, Yi-Fu Cai, Tao-Tao Qiu +2
In this paper we study the sound speed - , which is directly related to the classical perturbations - of the dynamical dark energy (DE), especially with an equation of state…
Probing Noncommutativity with Inflationary Gravitational Waves
Yi-Fu Cai, Yun-Song Piao
In this paper we study the behaviour of gravitational wave background (GWB) generated during inflation in the environment of the noncommutative field approach. From this approach w…