401 citations · 829 across the 23 of their papers we have counts for
23 papers
News-Aware Direct Reinforcement Trading for Financial Markets
Qing-Yu Lan, Zhan-He Wang, Jun-Qian Jiang +2
The financial market is known to be highly sensitive to news. Therefore, effectively incorporating news data into quantitative trading remains an important challenge. Existing appr…
Is GW190521 a gravitational wave echo of wormhole remnant from another universe?
Qi Lai, Qing-Yu Lan, Hao-Yang Liu +2
A particularly compelling aspect of the GW190521 event detected by the LIGO--Virgo--KAGRA (LVK) collaboration is that it has an extremely short duration, and lacks a clearly identi…
A fast deep-learning approach to probing primordial black hole populations in gravitational wave events
Jun-Qian Jiang, Hai-Long Huang, Jibin He +2
Primordial black holes (PBHs), envisioned as a compelling dark matter candidate and a window onto early-Universe physics, may contribute to some of the gravitational-wave (GW) sign…
Search for primordial black holes from gravitational wave populations using deep learning
Hai-Long Huang, Zhan-He Wang, Qing-Yu Lan +5
Gravitational waves (GWs) signals detected by the LIGO/Virgo/KAGRA collaboration might be sourced (partly) by the merges of primordial black holes (PBHs). The conventional hierarch…
Sub-Eddington accreting supermassive primordial black holes explain Little Red Dots
Hai-Long Huang, Jun-Qian Jiang, Jibin He +2
The James Webb Space Telescope (JWST) has uncovered an abundant population of compact, extremely red, and X-ray weak objects at , knows as ``Little Red Dots" (LRDs). The…
Supermassive primordial black holes for the GHZ9 and UHZ1 observed by the JWST
Hai-Long Huang, Yu-Tong Wang, Yun-Song Piao
The high redshift () galaxies GHZ9 and UHZ1 observed by the James Webb Space Telescope (JWST) are very massive and have exceptionally high black hole-to-star mass ratios with…
Self-supervised learning for gravitational wave signal identification
Hao-Yang Liu, Yu-Tong Wang
The computational cost of searching for gravitational wave (GW) signals in low latency has always been a matter of concern. We present a self-supervised learning model applicable t…
Searching for gravitational wave echoes in GWTC-1 and O3 events
Yu-Tong Wang, Yun-Song Piao
Gravitational wave (GW) echoes, if they exist, would be a probe to the near-horizon physics of black hole. In this brief report, we performed the Monte Carlo Markov Chain analysis…
Prospects for Fundamental Physics with LISA
Enrico Barausse, Emanuele Berti, Thomas Hertog +318
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…
On echo intervals in gravitational wave echo analysis
Yu-Tong Wang, Jun Zhang, Shuang-Yong Zhou +1
Gravitational wave echoes, if they exist, could encode important information of new physics from the strong gravity regime. Current echo searches usually assume constant interval e…
Primordial gravastar from inflation
Yu-Tong Wang, Jun Zhang, Yun-Song Piao
The dS bubbles can nucleate spontaneously during inflation, and will be stretched by the cosmological expansion to astrophysical scale. We report on a novel phenomenon that such a…
Are gravitational wave ringdown echoes always equal-interval ?
Yu-Tong Wang, Zhi-Peng Li, Jun Zhang +2
Gravitational wave (GW) ringdown waveforms may contain "echoes" that encode new physics in the strong gravity regime. It is commonly assumed that the new physics gives rise to the…
Phase-transition sound of inflation at gravitational waves detectors
Yu-Tong Wang, Yong Cai, Yun-Song Piao
It is well-known that the first-order phase transition (PT) will yield a stochastic gravitational waves (GWs) background with a logo-like spectrum. However, we show that when such…
Primordial perturbations with pre-inflationary bounce
Yong Cai, Yu-Tong Wang, Jin-Yun Zhao +1
Based on the effective field theory (EFT) of nonsingular cosmologies, we build a stable model, without the ghost and gradient instabilities, of bounce inflation (inflation is prece…
Probing the primordial universe with gravitational waves detectors
Yu-Tong Wang, Yong Cai, Zhi-Guo Liu +1
The spectrum of primordial gravitational waves (GWs), especially its tilt , carries significant information about the primordial universe. Combining recent aLIGO and Planck201…
Chirality oscillation of primordial gravitational waves during inflation
Yong Cai, Yu-Tong Wang, Yun-Song Piao
We show that if the gravitational Chern-Simons term couples to a massive scalar field (), the primordial gravitational waves (GWs) will show itself the chirality oscillation,…
Propagating speed of primordial gravitational waves and inflation
Yong Cai, Yu-Tong Wang, Yun-Song Piao
We show that if the propagating speed of gravitational waves (GWs) gradually diminishes during inflation, the power spectrum of primordial GWs will be strongly blue, while that of…
Is there an effect of a nontrivial during inflation?
Yong Cai, Yu-Tong Wang, Yun-Song Piao
Recently, we have shown that the propagation speed of the primordial gravitational waves (GWs) might be nontrivially varying during inflation, which could induce local oscill…
Oscillation in power spectrum of primordial gravitational wave as a signature of higher-order stringy corrections
Yong Cai, Yu-Tong Wang, Yun-Song Piao
In low-energy effective string theory, corrections involve the coupling of the dilaton field to Gauss-Bonnet term. We assume that the dilaton potential is fine tuned so that t…
Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves
Yong Cai, Yu-Tong Wang, Yun-Song Piao
In low-energy effective string theory and modified gravity theories, the propagating speed of primordial gravitational waves may deviate from unity. We find that the step-lik…
G-Bounce Inflation: Towards Nonsingular Inflation Cosmology with Galileon Field
Taotao Qiu, Yu-Tong Wang
We study a nonsingular bounce inflation model, which can drive the early universe from a contracting phase, bounce into an ordinary inflationary phase, followed by the reheating pr…
Pre-inflationary primordial perturbations
Yong Cai, Yu-Tong Wang, Yun-Song Piao
The large-scale power deficit in the cosmic microwave background fluctuations might be relevant with the physics of pre-inflation, a bounce, or a superinflationary phase preceding…
Parity violation in pre-inflationary bounce
Yu-Tong Wang, Yun-Song Piao
The power suppression at largest scale in the CMB TT powerspectrum might imply the occurrence of a pre-inflationary bounce. We calculate the circularly polarized gravitational wave…