124 citations · 327 across the 21 of their papers we have counts for
21 papers
A short review on Quintom dark energy theory
Xin Ren, Si-Yu Li, Yang Liu +3
In this paper, we provide a short review on the Quintom dark energy theory. Firstly, we discuss the No-Go theorem associated with dynamical dark energy, then present some examples…
Study the nature of dynamical dark energy by measuring the CMB polarization rotation angle
Hua Zhai, Si-Yu Li, Yang Liu +6
Recent results from the Dark Energy Spectroscopic Instrument (DESI) support the dynamical dark energy. Intriguingly, the data favor a transition of the dark energy equation of stat…
Foreground Removal in Ground-Based CMB Observations Using a Transformer Model
Ye-Peng Yan, Si-Yu Li, Yang Liu +2
We present a novel method for Cosmic Microwave Background (CMB) foreground removal based on deep learning techniques. This method employs a Transformer model, referred to as \textt…
Forecasts on Anisotropic Cosmic Birefringence Constraints for CMB Experiment in the Northern Hemisphere
Yiwei Zhong, Hongbo Cai, Si-Yu Li +3
The study of cosmic birefringence through Cosmic Microwave Background (CMB) experiments is a key research area in cosmology and particle physics, providing a critical test for Lore…
CMBFSCNN: Cosmic Microwave Background Polarization Foreground Subtraction with Convolutional Neural Network
Ye-Peng Yan, Si-Yu Li, Guo-Jian Wang +2
In our previous study, we introduced a machine-learning technique, namely CMBFSCNN, for the removal of foreground contamination in cosmic microwave background (CMB) polarization da…
Lensing reconstruction from the cosmic microwave background polarization with machine learning
Ye-Peng Yan, Guo-Jian Wang, Si-Yu Li +2
The lensing effect of the cosmic microwave background (CMB) is a powerful tool for our study of the distribution of matter in the universe. Currently, the quadratic estimator (EQ)…
Delensing of Cosmic Microwave Background Polarization with machine learning
Ye-Peng Yan, Guo-Jian Wang, Si-Yu Li +1
Primordial B-mode detection is one of the main goals of next-generation cosmic microwave background (CMB) experiments. Primordial B-modes are a unique signature of primordial gravi…
Recovering Cosmic Microwave Background Polarization Signals with Machine Learning
Ye-Peng Yan, Guo-Jian Wang, Si-Yu Li +1
Primordial B-mode detection is one of the main goals of current and future cosmic microwave background (CMB) experiments. However, the weak B-mode signal is overshadowed by several…
Recovering the CMB Signal with Machine Learning
Guo-Jian Wang, Hong-Liang Shi, Ye-Peng Yan +4
The cosmic microwave background (CMB), carrying the inhomogeneous information of the very early universe, is of great significance for understanding the origin and evolution of our…
The design of the Ali CMB Polarization Telescope receiver
Maria Salatino, Jason E. Austermann, Keith L. Thompson +72
Ali CMB Polarization Telescope (AliCPT-1) is the first CMB degree-scale polarimeter to be deployed on the Tibetan plateau at 5,250m above sea level. AliCPT-1 is a 90/150 GHz 72 cm…
The effects on CMB power spectra and bispectra from the polarization rotation and its correlations with temperature and E-polarization
Hua Zhai, Si-Yu Li, Mingzhe Li +2
The Chern-Simons term, through which the cosmic Axion-like field couples to the electromagnetic field, has the effect to rotate CMB polarization directions and to break the CPT sym…
Joint constraint on primordial gravitational waves and polarization rotation angle with current CMB polarization data
Hua Zhai, Si-Yu Li, Mingzhe Li +1
Cosmological CPT violation will rotate the polarized direction of CMB photons, convert partial CMB E mode into B mode and vice versa. It will generate non-zero EB, TB spectra and c…
Tibets Window on Primordial Gravitational Waves
Hong Li, Si-Yu Li, Yang Liu +2
As an essential part of China’s Gravitational Waves Program, the Ali CMB Polarization Telescope (AliCPT) is a ground-based experiment aiming at the Primordial Gravitational Waves…
Probing Primordial Gravitational Waves: Ali CMB Polarization Telescope
Hong Li, Si-Yu Li, Yang Liu +14
In this paper, we will give a general introduction to the project of Ali CMB Polarization Telescope (AliCPT), which is a Sino-US joint project led by the Institute of High Energy P…
Tibet's Ali: A New Window to Detect the CMB Polarization
Yong-Ping Li, Yang Liu, Si-Yu Li +2
The Cosmic Microwave Background (CMB) Polarization plays an important role in current cosmological studies. CMB B-mode polarization is the most effective probe to primordial gravit…
Cosmic Reionization Study : Principle Component Analysis After Planck
Yang Liu, Hong Li, Si-Yu Li +2
The study of reionization history plays an important role in understanding the evolution of our universe. It is commonly believed that the intergalactic medium (IGM) in our univers…
Primordial Gravitational Waves Measurements and Anisotropies of CMB Polarization Rotation
Si-Yu Li, Jun-Qing Xia, Mingzhe Li +2
Searching for the signal of primordial gravitational waves in the B-modes (BB) power spectrum is one of the key scientific aims of the cosmic microwave background (CMB) polarizatio…
Single field inflation with modulated potential in light of the Planck and BICEP2
Youping Wan, Siyu Li, Mingzhe Li +3
The recently released BICEP2 data detected the primordial B-mode polarization in the Cosmic Microwave Background (CMB) map which strongly supports for a large tensor-to-scalar rati…
Testing CPT Symmetry with Current and Future CMB Measurements
Si-Yu Li, Jun-Qing Xia, Mingzhe Li +2
In this paper we use the current and future cosmic microwave background (CMB) experiments to test the Charge-Parity-Time Reversal (CPT) symmetry. We consider a CPT-violating intera…
Constraints on Dark Energy from New Observations including Pan-STARRS
Wei Zheng, Si-Yu Li, Hong Li +3
In this paper, we set the new limits on the equation of state parameter (EoS) of dark energy with the observations of cosmic microwave background radiation (CMB) from Planck satell…
Constraints on Cosmological Models from Hubble Parameters Measurements
Wei Zheng, Hong Li, Jun-Qing Xia +3
In this paper, we study the cosmological constraints from the measurements of Hubble parameters--- data. Here, we consider two kinds of data: the direct probe fr…