57 citations · 77 across the 7 of their papers we have counts for
7 papers
New results on vacuum fluctuations: Accelerated detector versus inertial detector in a quantum field
I-Chin Wang
We investigate the interaction between a moving detector and a quantum field, especially about how the trajectory of the detector would affect the vacuum fluctuations when the dete…
Naturally large tensor-to-scalar ratio in inflation
Guo-Chin Liu, Kin-Wang Ng, I-Chin Wang
Recently, BICEP2 measurements of the cosmic microwave background (CMB) -mode polarization at degree angular scales has indicated the presence of tensor modes with a high tensor-…
Inflaton fluctuations in the presence of cosmological defects
Hing-Tong Cho, Kin-Wang Ng, I-Chin Wang
We study quantum fluctuations of a free massless scalar field during inflation in the presence of a point, line, or plane defect such as a black hole, cosmic string, or domain wall…
Scalar field fluctuations in Schwarzschild-de Sitter space-time
Hing-Tong Cho, Kin-Wang Ng, I-Chin Wang
We calculate quantum fluctuations of a free scalar field in the Schwarzschild-de Sitter space-time, adopting the planar coordinates that is pertinent to the presence of a black hol…
Effects of a pre-inflation radiation-dominated epoch to CMB anisotropy
I-Chin Wang, Kin-Wang Ng
We consider that the pre-inflation era is radiation-dominated, transiting smoothly to the inflationary era. We work out in detail the dynamics of inflaton fluctuations across the p…
Dust and Radiation Quantum Perfect Fluid Cosmology : Selection of Time Variable
I. -Chin Wang
We studied the expectation value of the scale factor in radiation and dust quantum perfect fluid cosmology. We used Schutz variational formalism to describe perfect fluid and selec…