391 citations · 2.6k across the 103 of their papers we have counts for
9 papers · 1 filter
Time-dependent correlations of inflationary perturbations
Wo-Lung Lee, Li-Zhi Fang
We show that if the primordial classical perturbations were generated by the gravitational particle creation during inflation, and followed by an evolution of quantum-to-classical…
Measuring the galaxy power spectrum with multiresolution decomposition -- IV. redshift distortion
Xiao-Hu Yang, Long-Long Feng, Yao-Quan Chu +1
In this paper, we develop a theory of redshift distortion of the galaxy power spectrum in the discrete wavelet transform (DWT) representation. Because the DWT power spectrum is dep…
The large-scale rms bulk velocity estimated from QSOs' Ly forests
Hu Zhan, Li-Zhi Fang
We propose a method for estimating the large-scale rms bulk velocity of the cosmic mass field from the transmitted fluxes of Ly forests. It is based on two linear relationships…
On the Normalization of the QSO's Lyman alpha Forest Power Spectrum
Priya Jamkhedkar, Hongguang Bi, Li-Zhi Fang
The calculation of the transmission power spectrum of QSO's Lyman alpha absorption requires two parameters for the normalization: the continuum Fc and mean transmission, i.e. avera…
Measuring the galaxy power spectrum with multiresolution decomposition -- III. velocity field analysis
Xiao-Hu Yang, Long-Long Feng, Yao-Quan Chu +1
In this paper, we develop the method of analyzing the velocity field of cosmic matter with a multiresolution decomposition. This is necessary in calculating the redshift distortion…
The local power spectrum and correlation hierarchy of the cosmic mass field
Hu Zhan, Priya Jamkhedkar, Li-Zhi Fang
We analyze the power spectrum of a QSO's Ly_alpha transmitted flux in the discrete wavelet transform (DWT) representation. Although the mean DWT power spectrum is consistent with i…