A5034064857- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Pulsars and Gravitational Waves Research
- Geophysics and Gravity Measurements
- Galaxies: Formation, Evolution, Phenomena
- Solar and Space Plasma Dynamics
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Bone Tissue Engineering Materials
- Radio Astronomy Observations and Technology
- High-Velocity Impact and Material Behavior
- Geophysics and Sensor Technology
- Advanced Differential Geometry Research
- Relativity and Gravitational Theory
- Pregnancy and preeclampsia studies
- MXene and MAX Phase Materials
- Extracellular vesicles in disease
- Advanced Nanomaterials in Catalysis
- Orthopedic Infections and Treatments
- Intermetallics and Advanced Alloy Properties
- Space Technology and Applications
- Nerve injury and regeneration
- Influenza Virus Research Studies
- Transportation Safety and Impact Analysis
- Bone and Joint Diseases
Huazhong University of Science and Technology
2013-2025
Lanzhou University of Technology
2025
Union Hospital
2025
Shandong University
2024
Southwest University
2016-2024
Wuhan University
2022-2024
Wuhan Donghu University
2024
Union Hospital
2022-2023
Shenyang Ligong University
2018-2020
Chongqing University of Posts and Telecommunications
2012-2013
TianQin is a planned space-based gravitational wave (GW) observatory consisting of three earth orbiting satellites with an orbital radius about $10^5~{\rm km}$. The will form equilateral triangle constellation the plane which nearly perpendicular to ecliptic plane. aims detect GWs between $10^{-4}~{\rm Hz}$ and $1~{\rm that can be generated by wide variety important astrophysical cosmological sources, including inspiral Galactic ultra-compact binaries, stellar-mass black hole extreme mass...
The possibility that in the mass range around $10^{-12}\ M_\odot$ most of dark matter constitutes primordial black holes (PBHs) is a very interesting topic. To produce PBHs with this mass, scalar power spectrum needs to be enhanced order 0.01 at scale $k\sim 10^{12}\ \text{Mpc}^{-1}$. also produces large secondary gravitational waves mHz band. A phenomenological delta function usually used discuss production and waves. Based on G k inflations, we propose new mechanism enhance small scales by...
With the enhancement mechanism provided by a noncanonical kinetic term with peak, amplitude of primordial curvature perturbations can be enhanced seven orders magnitude at small scales while keeping to consistent observations large scales. The peak function and inflationary potential are not restricted in this mechanism. We use Higgs model T-model as examples show how abundant black hole dark matter different mass scalar induced secondary gravitational waves frequency generated. also that...
The production of primordial black hole (PBH) dark matter (DM) and the generation scalar induced secondary gravitational waves by using enhancement mechanism with a peak function in non-canonical kinetic term natural inflation is discussed. We show explicitly that power spectrum for curvature perturbation can be enhanced at 1012Mpc−1, 108Mpc−1 105Mpc−1 adjusting model parameters. With perturbations, we PBH DM masses around 10−13M⊙, Earth's mass stellar mass, (SIGWs) frequencies mHz, 10−6Hz...
Repairing critical bone defects is a complex problem in the clinic. The periosteum rich nerve plays vital role initiating and regulating regeneration. However, current studies have paid little attention to repairing nerves promote Thus, it essential construct bionic with targeted injured periosteum. We coupled phosphatidylserine (PS) aptamers repair Schwann cell exosomes exosome@aptamer (EA). Then through PEI, EA was successfully built on surface of electrospun fiber, which...
Abstract To treat bone defects, repairing the nerve‐rich periosteum is critical for local electric field. In this study, an endogenous field coupled with 2D black phosphorus electroactive to explore its role in promoting regeneration through nerves. Scanning electron microscopy (SEM) and transmission (TEM) are used characterize electrically active biomimetic periosteum. Here, vitro effects exerted by on transformation of Schwann cells into repair phenotype, axon initial segment (AIS) dense...
Strong evidence of the existence stochastic gravitational wave background (SGWB) has been reported recently by North American Nanohertz Observatory for Gravitational Waves, Parkes Pulsar Timing Array, European and Chinese Array Collaborations. The Bayesian posteriors SGWB amplitude spectrum are compatible with astrophysical predictions from a population supermassive black hole binaries (SMBHBs). We discuss modifications arising extra scalar or vector radiation to characteristic dimensionless...
We derive the general formulae for scalar and tensor spectral tilts to second order inflationary models with non-minimally derivative coupling without taking high friction limit. The kinetic Einstein brings energy scale in down be sub-Planckian. In limit, Lyth bound is modified an extra suppression factor, so that field excursion of inflaton are more consistent observations particular, help coupling, quartic power law potential observational constraint at 95\% CL.
The observational data on the anisotropy of cosmic microwave background constraints scalar spectral tilt ns and tensor to ratio r which depend first second derivatives inflaton potential. information can be used reconstruct potential in polynomial form up some orders. However, for classes potentials, behave as ns(N) r(N) universally terms number e-folds N. universal behaviour a class potentials. By parametrizing one parameters ns(N), ϵ(N) ϕ(N), fitting models data, we obtain inflationary...
This study utilized first principles calculations to examine the interfacial bonding and thermodynamic properties of bcc-Fe/MeAl (where Me represents Ni, Ti, or Fe) interface. A total twelve distinct atomic stacking configurations were developed for bcc-Fe(110)/NiAl(110), bcc-Fe(110)/TiAl(100), bcc-Fe(110)/FeAl(110) interface structures. The analysis strength stability was conducted through calculation adhesion work energy. results indicate that T2N1 configuration at bcc-Fe(110)/NiAl(110)...
Classical Be stars are rapidly rotating B-type exhibiting Balmer emission lines originating from circumstellar Keplerian gaseous disks, which likely form through episodic mass-ejection events. The currently favored model for star disks is the viscous decretion disk (VDD) model. However, mechanism behind mass ejection process during formation of a VDD mystery. We present peculiar behavior KIC 9715425, exhibited several minor outbursts (MIBs) and one major outburst (MAB) observed as...
The detection of B-mode power spectrum by the BICEP2 collaboration constrains tensor-to-scalar ratio $r=0.20^{+0.07}_{-0.05}$ for lensed-$\Lambda$CDM model. consistency this big value with {\em Planck} results requires a large running spectral index. values and index put challenge to single field inflation. For chaotic inflation, larger is, smaller is. natural absolute has an upper limit.
To reconcile the BICEP2 measurement on tensor-to-scalar ratio $r$ with Planck constraint, a large negative running of scalar spectral index ${n}_{s}$ is needed. So inflationary observable such as should be expanded at least to second-order slow-roll parameters for single-field models. The value and Lyth bound indicate that it impossible obtain sub-Planckian excursion inflaton. However, we derive an absolutely minimal $\mathrm{\ensuremath{\Delta}}\ensuremath{\phi}/{M}_{\text{Pl}}>\sqrt{r/2}$...
For the constant-roll tachyon inflation, we derive analytical expressions for scalar and tensor power spectra, spectral tilts to ratio first order of 1 by using method Bessel function approximation. The derived ns-r results are compared with observations, find that only inflation ηH being a constant is consistent observations constrain be slow-roll inflation. potential also reconstructed which observations.
We study the seemingly duality between large and small $\eta_H$ for constant-roll inflation with second slow-roll parameter being a constant. In previous studies, only inflationary models are found to be consistent observations. The suggests that may also find does not exist because both background scalar perturbation evolutions very different. By fitting observations, we get $-0.016\le\eta_H\le-0.0078$ at 95\% C.L if take $N=60$ increasing $\epsilon_H$ in which ends when $\epsilon_H=1$,...
Space-based gravitational wave detectors cannot keep rigid structures and precise arm length equality, so the equality of detector arms which is required in a ground-based interferometer to cancel overwhelming laser noise impossible. The time-delay interferometry method applied unequal lengths frequency noise. We give analytical formulas averaged response functions for tensor, vector, breathing longitudinal polarizations different TDI combinations, obtain their asymptotic behaviors. At low...
The discovery of gravitational waves, which are ripples space-time itself, opened a new window to test general relativity, because it predicts that there only plus and cross polarizations for waves. For alternative theories gravity, may be up six polarizations. measurement the polarization is one major scientific goals future wave detectors. To evaluate capability detector, we need use frequency dependent response functions averaged over source direction angle. We derive full analytical...