A5100370577- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Particle physics theoretical and experimental studies
- Noncommutative and Quantum Gravity Theories
- Archaeology and ancient environmental studies
- Gamma-ray bursts and supernovae
- Pleistocene-Era Hominins and Archaeology
- Pulsars and Gravitational Waves Research
- Pacific and Southeast Asian Studies
- Geomagnetism and Paleomagnetism Studies
- Quantum Electrodynamics and Casimir Effect
- Quantum Chromodynamics and Particle Interactions
- Laser-Plasma Interactions and Diagnostics
- Sleep and Work-Related Fatigue
- Magnetic confinement fusion research
- High-Energy Particle Collisions Research
- Computational Physics and Python Applications
- Geology and Paleoclimatology Research
- Geometric Analysis and Curvature Flows
- NMR spectroscopy and applications
- Fixed Point Theorems Analysis
- Advanced Banach Space Theory
- Chemical Thermodynamics and Molecular Structure
- Family Business Performance and Succession
- Geometry and complex manifolds
Radboud University Nijmegen
2020-2024
Lanzhou University
2016-2023
Institute of Plasma Physics
2023
Chinese Academy of Sciences
2023
Dalian Maritime University
2023
Tianjin University of Technology and Education
2021
Institute of Theoretical Physics
2018-2020
Texas A&M University
2020
University of California, Davis
2011
Ministry of Culture
2001
A bstract The gravitational asymptotic safety program envisions a high-energy completion of gravity based on non-Gaussian renormalization group fixed point. key step in this is the transition from Euclidean to Lorentzian signature spacetimes. One way address challenge formulate quantum theory Arnowitt-Deser-Misner decomposition metric field. This equips spacetime with preferred direction which may serve as time-direction setting. In work we use Wetterich equation order compute flow graviton...
Asymptotic Safety constitutes a promising mechanism for consistent and predictive high-energy completion of the gravitational interactions. To date, most results on interacting renormalization group fixed point underlying construction are obtained Euclidean signature spacetimes. In this work, we use Arnowitt-Deser-Misner (ADM) decomposition metric degrees freedom investigate relations between Lorentzian flows resulting from analytic continuation lapse function. We discuss general conditions...
Abstract Due to the low resonance frequency, existing low-frequency bender disk transducer is difficult resist due high hydrostatic pressure its rigidity. With introduction of air compensation technology, has ability dynamically balance with increase external water in inner cavity, while problem caused by large depth use that frequency increases cavity gas stiffness. Firstly, equivalent circuit model and without analyzed, resonant variation qualitatively analyzed. Then, finite element...
We use the functional renormalization group equation for effective average action to study fixed point structure of gravity-fermion systems on a curved background spacetime. approximate by Einstein-Hilbert supplemented fermion kinetic term and coupling bilinears spacetime curvature. The latter interaction is singled out based "smart truncation building principle". resulting flow possesses two families interacting points extending any number fermions. first family exhibits an upper bound...
A bstract Asymptotic Safety provides an elegant mechanism for obtaining a consistent high-energy completion of gravity and gravity-matter systems. Following the initial idea by Steven Weinberg, construction builds on interacting fixed point theories renormalization group (RG) flow. In this work we use Wetterich equation effective average action to investigate RG flow supplemented real scalar field. We give non-perturbative proof that subspace interactions respecting global shift-symmetry...
We set up a consistent background field formalism for studying the renormalization group (RG) flow of gravity coupled to Nf Dirac fermions on maximally symmetric backgrounds. Based Wetterich’s equation, we perform detailed study resulting fixed point structure in projection including Einstein–Hilbert action, fermion anomalous dimension, and specific coupling bilinears spacetime curvature. The latter constitutes mass-type term that breaks chiral symmetry explicitly. Our analysis identified...
In this paper, we investigate the braneworld scenario in $f(T)$ gravity with a $K$-field as background field. We consider various different specific forms of and $K$-field, find general way to construct model. Based on our solutions, split branes is investigated. Besides, stability studied by investigating tensor perturbation vielbein.
Asymptotic safety is a promising mechanism for obtaining consistent and predictive quantum theory gravity. The ADM formalism allows to introduce (Euclidean) time-direction in this framework. It equips spacetime with foliation structure by encoding the gravitational degrees of freedom lapse function, shift vector, metric measuring distances on spatial slices. We use Wetterich equation study renormalization group flow graviton 2-point function extracted from metric. driven 3- 4-point vertices...
Asymptotic safety is a promising mechanism for obtaining consistent and predictive quantum theory gravity. The ADM formalism allows to introduce (Euclidean) time-direction in this framework. It equips spacetime with foliation structure by encoding the gravitational degrees of freedom lapse function, shift vector, metric measuring distances on spatial slices. We use Wetterich equation study renormalization group flow graviton 2-point function extracted from metric. driven 3- 4-point vertices...
Abstract Guantao oil reservoir of the Bohai Bay, is characterized by low formation water salinity, high pore structure heterogeneity and flooding, which complicates logging response, especially contrast resistivity response. Traditional methods fail to estimate parameters accurately cannot determine producible fluid type. In this study, was investigated with advanced nuclear magnetic resonance data, saturation calculated using array dielectric data. Combining two aspects, a special...
Abstract Cdc42, a Ras-related GTPase that regulates the actin cytoskeleton, was recently shown to play an indispensable role in vasculogenesis and endothelial cell (EC) survival. Here, we determined whether Cdc42 also contributes lymphatic development by generated two different knockout mice lines crossing Cdc42/flox with either vascular cadherin-Cre (Cdh5α-Cre) or Prox1-CreER T2 mice. Our results demonstrated depleting ECs of expression resulted embryonic lethality severe edema. Whole-mount...
The Palatini $f(|\stackrel{^}{\mathrm{\ensuremath{\Omega}}}|)$ gravity is a generalized theory of the Eddington-inspired Born-Infeld gravity, where ${{\mathrm{\ensuremath{\Omega}}}^{K}}_{N}\ensuremath{\equiv}{{\ensuremath{\delta}}^{K}}_{N}+b{g}^{KL}{R}_{LN}(\mathrm{\ensuremath{\Gamma}})$ an auxiliary tensor constructed with spacetime metric $g$ and independent connection $\mathrm{\ensuremath{\Gamma}}$. In this paper, we study...
In this paper, we adopt the method of quantum fields in curved spacetime to quantize a free scalar matter field braneworld background whose warped factor is form that could generate P\"{o}schl-Teller potential. Then consider interaction between $\phi(x)$ and classical source $\rho(x)$ with $\mathcal{H}_I=\sqrt{-g}\tilde{g}\rho(x)\phi(x)$. The corresponding S-matrix given number particles generated by obtained. Furthermore, get {particle numbers} cases only ground state mode be detected both...