337 citations · 2.7k across the 74 of their papers we have counts for
12 papers · 1 filter
New Anomalies in Cosmic Microwave Background Anisotropy: Violation of the Isotropic Gaussian Hypothesis in Low- Modes
Shi-Chun Su, M. -C. Chu
In the standard framework of cosmology, primordial density fluctuations are assumed to have an isotropic Gaussian distribution. We search for deviations from this assumption in the…
Cosmological Constraints on Radion Evolution in the Universal Extra Dimension Model
K. C. Chan, M. -C. Chu
The constraints on the radion evolution in the Universal Extra Dimension (UED) model from Cosmic Microwave Background (CMB) and Type Ia supernovae (SNe Ia) data are studied. In the…
CMB Constraint on Radion Evolution in the Brane World Scenario
K. C. Chan, M. -C. Chu
In many versions of brane model, the modulus field of extra dimensions, the radion, could have cosmological evolution, which induces variation of the Higgs vacuum expectation value…
Constraining the Variation of G by Cosmic Microwave Background Anisotropies
K. C. Chan, M. -C. Chu
We use the Cosmic Microwave Background Anisotropies (CMBA) power spectra to constrain the cosmological variation of gravitational constant G. It is found that the sensitivity of CM…
CMB and Matter Power Spectra of Early f(R) Cosmology in Palatini Formalism
Baojiu Li, Ming-Chung Chu
We calculate in this article the CMB and matter power spectra of a class of early cosmologies, which takes the form of . Unlik…
Constraints on f(R) Cosmology in the Palatini Formalism
Baojiu Li, K. C. Chan, M. -C. Chu
In this work we derive the covariant and gauge invariant perturbation equations in general theories of gravity in the Palatini formalism to linear order and calculate the co…