164 citations · 2.2k across the 66 of their papers we have counts for
57 papers · 1 filter
Gravitational waves and dark matter with Witten effect
Ruiyu Zhou, Ligong Bian
We investigate the breaking of dark symmetry at different temperature scales, occurring after Peccei-Quinn symmetry breaking or following QCD symmetry breaking. We focus…
Gravitational wave and dark matter from Axion-Higgs string
Yongtao Jia, Ligong Bian
Axions have long been considered plausible candidates for dark matter. The axion dark matter emitted from cosmic strings after the Peccei-Quinn (PQ) symmetry breaking in the early…
Heavy QCD axion model in light of pulsar timing arrays
Moslem Ahmadvand, Ligong Bian, Soroush Shakeri
Recently, pulsar timing array experiments reported the observation of a stochastic gravitational wave background in the nanohertz range frequency band. We show that such a signal c…
Solving the domain wall problem with first-order phase transition
Yang Li, Ligong Bian, Yongtao Jia
Domain wall networks are two-dimensional topological defects generally predicted in many beyond standard model physics. In this Letter, we propose to solve the domain wall problem…
Constraints on new physics around the MeV scale with cosmological observations
Shihao Deng, Ligong Bian
We investigate the joint effect of the cosmological phase transitions, thermal light dark matter, and the lepton asymmetry on the big bang nucleosynthesis and cosmic microwave back…
Domain Wall Network: A Dual Solution for Gravitational Waves and Hubble Tension?
Ligong Bian, Shuailiang Ge, Changhong Li +2
We explore the possibility that domain wall networks generate the stochastic gravitational wave background (SGWB) observed as a strong common power-law process in the Data Release-…
Searching for cosmic string induced stochastic gravitational wave background with the Parkes Pulsar Timing Array
Ligong Bian, Jing Shu, Bo Wang +2
We search for stochastic gravitational wave background emitted from cosmic strings using the Parkes Pulsar Timing Array data over 15 years. While we find that the common power-law…
Gravitational waves and monopoles dark matter from first-order phase transition
Jing Yang, Ruiyu Zhou, Ligong Bian
We study the possibility of monopoles serving as dark matter when they are produced during the first-order phase transition in the dark sector. Our study shows that dark monopoles…
Electroweak Phase Transition and Gravitational Waves in the Type-II Seesaw Model
Ruiyu Zhou, Ligong Bian, Yong Du
The type-II seesaw model is a possible candidate for simultaneously explaining non-vanishing neutrino masses and the observed baryon asymmetry of the Universe. In this work, we stu…
Probing the electroweak symmetry breaking history with Gravitational waves
Zizhuo Zhao, Yuefeng Di, Ligong Bian +1
We perform a three dimensional lattice simulation of the electroweak symmetry breaking process through a two-step phase transition, where one of the two steps is a first order phas…
FIMP dark matter mediated by massive gauge boson around the phase transition period and the gravitational waves production
Ligong Bian, Yi-Lei Tang, Ruiyu Zhou
We study the feebly interacting massive particle dark matter whose production processes are significantly affected by the phase evolution and the complicated thermal corrections to…
Probing the violation process with the observation of cosmic magnetic field
Yuefeng Di, Jialong Wang, Ligong Bian +2
We investigate the violation process by performing three-dimensional lattice simulations in an electroweak theory with first-order phase transition and the electroweak sphale…
Probing superheavy dark matter with gravitational waves
Ligong Bian, Xuewen Liu, Ke-Pan Xie
We study the superheavy dark matter (DM) scenario in an extended model, where one generation of right-handed neutrino is the DM candidate. If there is a new lighter ste…
Axion-like particle inflation and dark matter
Wei Cheng, Ligong Bian, Yu-Feng Zhou
In this paper, we propose a generalized natural inflation (GNI) model to study axion-like particle (ALP) inflation and dark matter (DM). GNI contains two additional parameters $(n_…
Probing new physics for and gravitational waves
Ruiyu Zhou, Ligong Bian, Jing Shu
We study the possibility of probing new physics accounting for anomaly and gravitational waves with pulsar timing array measurements. The model we consider is either a li…
Heavy dark matter and Gravitational waves
Xin Deng, Xuewen Liu, Jing Yang +2
Domain walls can form after breakdown of a discrete symmetry induced by first-order phase transition, we study the heavy dark matter produced around the temperature of the phase tr…
Flavor and CP-violating Higgs sector in two Higgs doublet models with
Ligong Bian, Hyun Min Lee, Chan Beom Park
We investigate the role of a local symmetry for the problem of CP violation in the effective theory for two Higgs doublet models and its microscopic counterparts. First, in…
Gravitational waves from cosmic strings and first-order phase transition
Ruiyu Zhou, Ligong Bian
Cosmic strings and first-order phase transition are two main sources for the stochastic gravitational wave background (SGWB). In this work, we study the stochastic gravitational wa…
Electroweak baryogenesis and gravitational waves in a composite Higgs model with high dimensional fermion representations
Ke-Pan Xie, Ligong Bian, Yongcheng Wu
We study electroweak baryogenesis in the composite Higgs model with the third generation quarks being embedded in the representation of . The sc…
Gravitational Waves from first-order phase transition and domain wall
Ruiyu Zhou, Jing Yang, Ligong Bian
In many particle physics models, domain wall can form during the phase transition process after discrete symmetry breaking. We study the scenario within a complex singlet extended…
Gravitational wave and electroweak baryogenesis with two Higgs doublet models
Ruiyu Zhou, Ligong Bian
We study stochastic gravitational wave production and baryon number generation at electroweak phase transition with the two Higgs doublet models. The produced stochastic gravitatio…
Complementarity of the future colliders and gravitational waves in the probe of complex singlet extension to the Standard Model
Ning Chen, Tong Li, Yongcheng Wu +1
In this work, we study the future probes of the complex singlet extension to the Standard Model (cxSM). This model is possible to realize a strongly first-order electroweak phase t…
Probing the Electroweak Sphaleron with Gravitational Waves
Ruiyu Zhou, Ligong Bian, Huai-Ke Guo
We present the relation between the sphaleron energy and the gravitational wave signals from a first order electroweak phase transition. The crucial ingredient is the scaling law b…
Electroweak phase transition with composite Higgs models: calculability, gravitational waves and collider searches
Ligong Bian, Yongcheng Wu, Ke-Pan Xie
We study the strong first order electroweak phase transition (SFOEWPT) with the composite Higgs model, whose scalar sector contains one Higgs doublet and one real sin…