A5086005402- Particle physics theoretical and experimental studies
- Cosmology and Gravitation Theories
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Dark Matter and Cosmic Phenomena
- Nuclear physics research studies
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Computational Physics and Python Applications
- Geophysics and Gravity Measurements
- Atmospheric Ozone and Climate
- Gamma-ray bursts and supernovae
- Quantum, superfluid, helium dynamics
- Relativity and Gravitational Theory
- DNA Repair Mechanisms
- Neutrino Physics Research
China Institute of Atomic Energy
2019-2024
Shanxi Normal University
2022
Kavli Institute for the Physics and Mathematics of the Universe
2018-2020
The University of Tokyo
2018-2020
Institute of High Energy Physics
2019
RIKEN
2019
University of California, Los Angeles
2012-2017
Wuhan University
2017
China Center of Advanced Science and Technology
2015
National Tsing Hua University
2010-2011
The recent measurement of the Higgs boson mass implies a relatively slow rise standard model potential at large scales, and possible second minimum even larger scales. Consequently, field may develop vacuum expectation value during inflation. relaxation from its postinflationary to effective represents an important stage in evolution Universe. During this epoch, time-dependent condensate can create chemical for lepton number, leading generation asymmetry presence some right-handed Majorana...
Multinucleon transfer (MNT) reactions have received increasing interest in the synthesis of neutron-rich nuclei due to distinct limitations other reactions, particularly $N=126$ region, which represents last waiting point astrophysical nucleosynthesis. However, it is still a challenging endeavor describe MNT process between heavy nuclei. In this study, we develop theoretical framework that couples Langevin dynamics iteratively with master equation, based on HICOL model (CLIM-H). The random...
ABSTRACT We present Submillimeter Array polarization observations of the CO J = 3–2 line toward NGC 1333 IRAS 4A. The Stokes I maps at an angular resolution ∼1″ reveal two bipolar outflows from binary sources kinematic features emission can be modeled by wind-driven ∼20° inclined plane sky. Close to protostars polarization, ∼2.″3, has a position angle approximately parallel magnetic field direction inferred dust polarizations. appears vary smoothly hourglass around core arc-like morphology...
We study the observational constraints on exponential gravity model of $f(R)=\ensuremath{-}\ensuremath{\beta}{R}_{s}(1\ensuremath{-}{e}^{\ensuremath{-}R/{R}_{s}})$. use latest data including Supernova Cosmology Project Union2 compilation, Two-Degree Field Galaxy Redshift Survey, Sloan Digital Sky Survey Data Release 7, and Seven-Year Wilkinson Microwave Anisotropy Probe in our analysis. From these observations, we obtain a lower bound parameter $\ensuremath{\beta}$ at 1.27 (95% C.L.) but no...
During inflation, scalar fields, including the Higgs boson, may acquire a nonzero vacuum expectation value, which must later relax to equilibrium value during reheating. In presence of time-dependent condensate, state can evolve into with particle number. We show that, in lepton-number violation neutrino sector, production explain observed matter-antimatter asymmetry Universe. find that this form leptogenesis is particularly effective when condensate decays rapidly and at low reheat scale....
An epoch of Higgs relaxation may occur in the early universe during or immediately following postinflationary reheating. It has recently been pointed out that leptogenesis minimal extensions standard model this [A. Kusenko, L. Pearce, and Yang, Phys. Rev. Lett. 114, 061302 (2015)]. We analyze taking into account effects perturbative nonperturbative decays condensate, we present a detailed derivation relevant kinetic equations particle interaction cross sections. identify parameter space...
We study gravitational waves in viable $f(R)$ theories under a non-zero background curvature. In general, an theory contains extra scalar degree of freedom corresponding to massive mode wave. For models, since there always exits de-Sitter point where the curvature vacuum is non-zero, mass squared wave about $R_{d}\sim10^{-66}eV^{2}$. illustrate our results two types models: exponential gravity and Starobinsky models. both cases, will be order $10^{-33}eV$ when it propagates vacuum. However,...
The curvature singularity in viable f (R) gravity models is examined when the background density dense.This could be eliminated by adding R 2 term Lagrangian.Some of cosmological consequences, particular source for scalar mode gravitational waves, are discussed.
We study the effect of large baryonic isocurvature perturbations on abundance deuterium (D) produced in big bang nucleosynthesis (BBN). Large existing at BBN epoch (T∼ 0.1 MeV) change D by a second order effect, which, together with recent precise measurement abundance, leads to constraint amplitude power spectrum perturbations. derive upper limit SB≲ 0.016 (2σ) for scales k−1 ≳ 0.0025 pc. This is most stringent Mpc-1 ≲ k 4 × 108 Mpc-1. apply relaxation leptogenesis scenario, where are last...
A bstract Symmetry breaking in the Higgs field via a non-minimal coupling to gravity or higher-dimensional interactions with inflaton can lead condensation at large vacuum expectation value (VEV) during inflation. After inflation is over, must relax minimum of its effective potential, creating an era which CPT effectively broken by time-depended VEV. We show that matter-antimatter asymmetry be generated this relaxation epoch.
The multinucleon transfer (MNT) reaction has aroused wide interest in recent years largely due to its ability produce neutron-rich heavy nuclei. semiclassical model GRAZING can describe well the experimental MNT data for many medium-heavy systems, but only simply considers neutron evaporation deexcitation of primary fragments. In order final products and even superheavy we try consider both subsequent processes by combining, first time, statistical-decay GEMINI as improved version GEMINI++....
Recently the ATLAS and CMS Collaborations have reported evidence of a diphoton excess which may be interpreted as pseudoscalar boson $S$ with mass around 750 GeV. To explain excess, such is coupled to Standard Model gauge fields via $SF\stackrel{\texttildelow{}}{F}$ operators. In this work, we consider implications state for early universe cosmology; in particular, field can acquire large vacuum expectation value due quantum fluctuations during inflation. During reheating, it then relaxes...
Observations of cosmic infrared background (CIB) radiation exhibit significant fluctuations on small angular scales. A number explanations have been put forth, but there is currently no consensus the origin these large fluctuations. We consider possibility that small-scale in matter-antimatter asymmetry could lead to variations star formation rates which are responsible for CIB show recently proposed Higgs relaxation leptogenesis mechanism can produce such baryonic isocurvature perturbations...
We extend the relaxation mechanism to elementary Goldstone Higgs framework. Besides studying allowed parameter space of theory, we add minimal ingredients needed for framework be phenomenologically viable. The very nature extended sector allows consider flat scalar potential directions along which can implemented. This fact translates into wider regions applicability when compared Standard Model case. Our results show that if electroweak scale is not fundamental but radiatively generated it...
Mapping magnetic fields is the key to resolving what remains an unclear physical picture of circumstellar in late-type evolved stars. Observations linearly polarized emission from thermal molecular line transitions due Goldreich-Kylafis (G-K) effect provides valuable insight into field geometry these sources that complementary other studies. In this paper, we present detection spectral-line polarization both $J=2-1$ CO and $v=1, J=5-4$ SiO maser toward two thermal-pulsating (TP-) AGB stars,...
Our research goal is to measure the 7 Be( d, p ) reaction shed light on Li problem in Big-Bang Nucleosynthesis. We are developing an unstable 7Be target for a high-resolution measurement of 8 Be reaction. plan compare two methods producethe target: (1) Activation method , and (2) Implantation . performed activation methodexperiment at Van de Graaff Osaka University, obtained cross-section data. A second experiment obtain more accurate data will take place Tandem Electrostatic Accelerator,...