A5059524838- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Noncommutative and Quantum Gravity Theories
- Cancer Treatment and Pharmacology
- Advanced Synthetic Organic Chemistry
- Laser-Plasma Interactions and Diagnostics
- Air Quality Monitoring and Forecasting
- Atmospheric chemistry and aerosols
- Synthetic Organic Chemistry Methods
- Chemical synthesis and alkaloids
- Atmospheric aerosols and clouds
- Zeolite Catalysis and Synthesis
- Numerical methods for differential equations
- Nonlinear Waves and Solitons
- Metal-Organic Frameworks: Synthesis and Applications
- Crystal structures of chemical compounds
- Catalysis and Hydrodesulfurization Studies
- Meteorological Phenomena and Simulations
- Chemical Synthesis and Reactions
- Click Chemistry and Applications
- Remote Sensing and Land Use
- Urban Heat Island Mitigation
- Chemical Synthesis and Analysis
Nanjing Medical University
2025
Beijing Tian Tan Hospital
2025
Capital Medical University
2025
Maxwell Institute for Mathematical Sciences
2023-2024
University of Edinburgh
2023-2024
Nanjing University of Information Science and Technology
2020-2024
China Meteorological Administration
2020-2024
Perimeter Institute
2023
Northeastern University
2020-2022
Tsinghua University
2022
A bstract We elaborate on the proposal of flat holography in which four-dimensional physics is encoded two-dimensional celestial conformal field theory (CCFT). The symmetry underlying CCFT extended BMS (asymptotically) space time. use soft and collinear theorems Einstein-Yang-Mills to derive OPEs operators generating superrotations supertranslations. energy momentum tensor, given by a shadow transform graviton operator, implements Virasoro subalgebra 𝔟𝔪𝔰 4 . Supertranslations can be...
A bstract We study two-dimensional celestial conformal field theory describing four- dimensional $$ \mathcal{N} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>N</mml:mi> </mml:math> =1 supergravity/Yang-Mills systems and show that the underlying symmetry is a supersymmetric generalization of BMS symmetry. construct fermionic primary wave functions how they are related via supersymmetry to their bosonic partners. use soft collinear theorems Einstein-Yang- Mills derive OPEs...
We propose a description of the gluon scattering amplitudes as inverse Mellin transforms conformal correlators light operators in two-dimensional Liouville theory tensored with WZW-like chiral currents on celestial sphere. The dimensions are dual to cone energies while their positions determined by momentum directions. Tree-level approximation Yang-Mills corresponds semiclassical limit theory. By comparing subleading corrections, we find b2=(8π2)−1β0g2(M), where b is coupling constant, g(M)...
A bstract Carrollian holography is supposed to describe gravity in four-dimensional asymptotically flat space-time by the three-dimensional CFT living at null infinity. We transform superstring scattering amplitudes into correlation functions of primary fields depending on coordinates celestial sphere and a retarded time coordinate. The power series inverse string tension converted whole tower both UV IR finite descendants underlying field-theoretical amplitude. focus four-point involving...
A bstract The scattering of gluons and gravitons in trivial backgrounds is endowed with many surprising infrared features which have interesting conformal interpretations on the two-dimensional celestial sphere. However, fate these structures more general asymptotically flat far from clear. In this paper, we consider holomorphic presence non-perturbative, self-dual background gauge gravitational fields are determined by freely specified radiative data. We make use explicit formulae for...
It is shown that there exists a simple deformed version of Strominger’s infinite-dimensional <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msub><a:mrow><a:mi>w</a:mi></a:mrow><a:mrow><a:mn>1</a:mn><a:mo>+</a:mo><a:mi>∞</a:mi></a:mrow></a:msub></a:mrow></a:math> algebra soft graviton symmetries, which we conjecture to arise in spacetimes with nonvanishing cosmological constant. The contains subalgebra generating <c:math...
A bstract In celestial conformal field theory, gluons are represented by primary fields with dimensions ∆ = 1 + iλ , λ ∈ ℝ and spin J ±1, in the adjoint representation of gauge group. All two- three-point correlation functions these zero as a consequence four-dimensional kinematic constraints. Four-point contain delta-function singularities enforcing planarity four-particle scattering events. We relax constraints taking shadow transform one perform block decomposition corresponding...
A bstract In celestial holography, four-dimensional scattering amplitudes are considered as two-dimensional conformal correlators of a putative field theory (CCFT). The simplest way converting momentum space into CCFT is by taking their Mellin transforms with respect to light-cone energies. For massless particles, like gluons, however, such construction leads three-point and four-point that vanish everywhere except for measure zero hypersurface coordinates. This due the conservation law...
We consider Yang-Mills theory with the coupling constant and theta angle determined by vacuum expectation values of a dynamical (complex, zero mass) dilaton field. discuss tree-level N-gluon MHV scattering amplitudes in presence nontrivial background field construct corresponding celestial taking Mellin transforms respect to light cone frame energies. In this way, we obtain two-dimensional CFT correlators primary fields on sphere. show that evaluated spherical shockwave are given correlation...
A bstract Differential equations are powerful tools in the study of correlation functions conformal field theories (CFTs). Carrollian amplitudes behave as CFT that holographically describes asymptotically flat spacetime. We derive linear differential satisfied by MHV gluon and graviton amplitudes. obtain non-distributional solutions for both cases. perform various consistency checks these equations, including compatibility with symmetries.
We discuss supersymmetric Yang-Mills theory coupled to dilatons in the framework of celestial holography. show that presence point-like dilaton sources, CCFT operators associated with gauge supermultiplet acquire a simple, factorized form. They factorize into holomorphic (super)current part and exponential "light" Liouville theory, infinite central charge limit. The current sector exhibits (1,0) supersymmetry, thus implementing spacetime supersymmetry CCFT.
A bstract In a recent paper, here referred to as part I, we considered the celestial four-gluon amplitude with one gluon represented by shadow transform of corresponding primary field operator. This correlator is ill-defined because it contains branch points related presence conformal blocks complex spin. this work, adopt procedure similar minimal models and construct single-valued completion correlator, in limit when “soft.” By following approach Dotsenko Fateev, obtain an integral...
A bstract Celestial scattering amplitudes for massless particles are Mellin transforms of momentum-space with respect to the energies external particles, and behave as conformal correlators on celestial sphere. However, there few explicit cases well-defined amplitudes, particularly gravitational theories: mixing between low- high-energy scales induced by transform generically yields divergent integrals. In this paper, we argue that most natural object consider is amplitude dressed an...
Epothilones A (1) and B (2) are potent antitumor natural products with a Taxol-like mechanism of action. total synthesis epothilone is reported, which utilized chiral silane-based bond construction methodology to introduce the key C-6 C-7 stereocenters fragment 4. The C-15 stereocenter 5 was established by lipase-mediated kinetic resolution. fragments were assembled Suzuki coupling reaction an aldol condensation cyclized Yamaguchi-type macrolactonization reaction.
A bstract We discuss the properties of recently constructed “single-valued” celestial four-gluon amplitudes. show that amplitude factorizes into “current” part and “scalar” part. The current factor is given by group-dependent Wess-Zumino-Witten correlator four holomorphic currents with a non-vanishing level Kač-Moody algebra. scalar can be expressed in terms complex integral Koba-Nielsen form, similar to integrals describing four-point correlators Coulomb gas models and, more generally,...
Statins are one of the most widely prescribed medicines in clinical practice. Their benefits have extended beyond cardiovascular applications to reduce serum uric acid levels. This study aims investigate relationship hyperuricemia with risk all-cause mortality among individuals taking statins. A retrospective cohort was performed using data from National Health and Nutrition Examination Survey (NHANES) database between 2005 2018. The weighted Cox proportional hazards models were used all...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTAsymmetric Crotylation Reactions on Solid Support: Synthesis of Stereochemically Well-Defined Polypropionate-Like SubunitsJames S. Panek and Bin ZhuView Author Information Department Chemistry, Metcalf Center for Science Engineering 590 Commonwealth Avenue Boston University, Boston, Massachusetts 02215 Cite this: J. Am. Chem. Soc. 1997, 119, 49, 12022–12023Publication Date (Web):December 10, 1997Publication History Received15 August...
Epothilones A and B (1 2) are natural products with potent antitumor activity. These compounds have a TaxolTM-like mechanism of action against tumor cells. total synthesis epothilone (1) is reported, which based on the union two advanced fragments: C3-C11 fragment 4 C12-C21 5. Bond construction methodology chiral silanes was utilized to introduce key C6 C7 stereocenters 4. lipase-mediated kinetic resolution established C15 stereocenter The 16-membered lactone constructed using three-step...
A double-turn capacitor-coil is used to produce a magnetic field (38.5 T) and construct topology of reconnection in low-β (β < 1) plasma environment. The device constructed with two metallic U-turn coils connecting parallel disks. High energy lasers are employed ablate one disk spontaneously driving currents the coils, which produces an interactive topology. We demonstrated through experiments numerical simulations that process takes place between non-uniform fields created by state...
We aim to identify prognosis risk factors in acute lymphoblastic leukemia (ALL). mRNA microarray data of adult ALL patients were downloaded from TCGA database, whose mRNAs isolated bone marrow aspirate fluid mononuclear cells. Then the differentially expressed genes (DEGs) between good and poor samples screened. Following that, sample dependency network was constructed based on Pearson connection coefficients DEGs samples. The prognosis-related collected using logistic regression analysis. A...
In celestial conformal field theory, gluons are represented by primary fields with dimensions $Δ=1+iλ$, $λ\in\mathbb{R}$ and spin $J=\pm 1$, in the adjoint representation of gauge group. All two- three-point correlation functions these zero as a consequence four-dimensional kinematic constraints. Four-point contain delta-function singularities enforcing planarity four-particle scattering events. We relax constraints taking shadow transform one perform block decomposition corresponding...