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Wilsonian Renormalization Group and the Lippmann-Schwinger Equation with a Multitude of Cutoff Parameters

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Communications in Theoretical Physics 2018年第3期69卷 303-307页

作者： E.Epelbaum J.Gegelia Ulf-G.Meiβner Institut fur Theoretische Physik II Ruhr-Universitat Bochum D-44780 Bochum Germany institute for Advanced Simulation Institut fur Kernphysik and Julich Center for Hadron Physics Forschungszentrum Jiilich D-52425 Julich Germany Tbilisi State University 0186 Tbilisi Georgia Helmholtz Institut fur Strahlen und kernphysik and Bethe Center for Theoretical Physics Universitat Bonn D-53115 Bonn Germany

The Wilsonian renormalization group approach to the Lippmann-Schwinger equation with a multitude of cutoff parameters is introduced.A system of integro-differential equations for the cutoff-dependent potential is *** an illustration,a perturbative solution of these equations with two cutoff parameters for a simple case of an S-wave low-energy potential in the form of a Taylor series in momenta is *** relevance of the obtained results for the effective field theory approach to nucleon-nucleon scattering is discussed.

关键词： nucleon-nucleon scattering effective field theory renormalization group

Reflection of intense laser light from microstructured targets as a potential diagnostic of laser focus and plasma temperature

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High Power Laser Science and Engineering 2019年第1期7卷 10-16页

作者： J.Jarrett M.King R.J.Gray N.Neumann L.Dhl C.D.Baird T.Ebert M.Hesse A.Tebartz D.R.Rusby N.C.Woolsey D.Neely M.Roth P.McKenna Department of Physics SUPA University of Strathclyde Institut f¨ur kernphysik Technische Universit?t Darmstadt York Plasma institute University of York STFC-Rutherford Appleton Laboratory Institut fur kernphysik Technische Universit?t Darmstadt

The spatial-intensity profile of light reflected during the interaction of an intense laser pulse with a microstructured target is investigated experimentally and the potential to apply this as a diagnostic of the interaction physics is explored numerically. Diffraction and speckle patterns are measured in the specularly reflected light in the cases of targets with regular groove and needle-like structures, respectively, highlighting the potential to use this as a diagnostic of the evolving plasma surface. It is shown, via ray-tracing and numerical modelling, that for a laser focal spot diameter smaller than the periodicity of the target structure, the reflected light patterns can potentially be used to diagnose the degree of plasma expansion, and by extension the local plasma temperature, at the focus of the intense laser light. The reflected patterns could also be used to diagnose the size of the laser focal spot during a high-intensity interaction when using a regular structure with known spacing.

关键词： high power laser laser-solid interactions plasma temperature diagnosis

REE and Other Trace Element Chemistry of Oldhamite(CaS)in the Qingzhen Chondrite(EH3)and Their Genetic Implications

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Chinese Journal Of Geochemistry 1993年第4期12卷 317-327页

作者：陈永亨王道德 ERNST PERNICKA institute of Geochemistry(Guangzhou Branch) Academia SinicaGuangzhou510640 Max-Planck-Institut fur kernphysik 6900 HeidelbergGermany

Instrumental neutron activation analysis(INAA) of 14 single oldhamite grains separated from the Qingzhen chondrite (EH3) for refractory(La,Ce,Sm ,Eu,Yb,Lu,Ca,Sc,Hf, and Th),volatile (Na,Cr,Zn,Se,Br,etc.)and siderophile elements (Fe,Ni,Co,Ir,Au ,and As) revealed that oldhamite is highly rich in refractory *** mineral serves as the principal carrier of REE and contains about 80% of the REEs in the Qingzhen enstatite chondrite .furthermore, the large enrichment of LREE relative to HREE is noticed in oldhamite from the Qingzhen .In general, the oldhamite from metal-sulfide assemblages is richer in REE than that from the matrix,i.e.,the earlier the oldhamite grains condensed, the richer they are in REE. *** is also rich in vol-atile elements such as Se,Br, *** terms of the distribution of trace elements in oldhamitc from the Qingzhen ,the chondrite is srggested to have resulted from high-temperature condensation of solar nebula.

关键词：球粒状陨石硫化物示踪元素稀土元素中子活化分析顽辉石

Physics of Interplanetary Dust

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紫金山天文台台刊 1996年第3期15卷 32-51页

作者： Eberhard Grun Max-Pi anck-Institut fur kernphysik 69117 Heidel berg.germany

Zodiacal light is a promient light phenomenon to the human eye in the morning andevening sky in non-polluted areas. Already in 1683 Cassini presented the correct explanation ofthis phenomenon: it is sun light scattered by dust particles orbiting the sun. The reistion toother "dusty" interplanetary phenomena,like comets was soon suspected. Comets shed

关键词：山砂加压山岭血肠沙州比面加力山口日场衡山

How the X(5568) Challenges Our Understanding of QCD

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Communications in Theoretical Physics 2016年第5期65卷 593-595页

作者：郭奉困 Ulf-G.Mei?ner 邹冰松 Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Helmholtz-Institut fur Strahlen- und kernphysik and Bethe Center for Theoretical Physics Universitat Bonn institute for Advanced Simulation Institut fur Kernphysik and Julich Center for Hadron PhysicsForschungszentrum Julich School of Physical Sciences University of Chinese Academy of Sciences

We discuss the X(5568)particle recently announced by the D0 *** types of models were proposed to explain this structure in the *** pointed out by Burns and Swanson(ar Xiv:1603.04366),none of them provides a satisfactory description of the *** provide additional arguments using general properties of QCD,and conclude that the observation of the X(5568),if confirmed,poses serious challenges to our understanding of nonperturbative QCD.

关键词： exotic hadrons tetraquark

Contribution of Fock Term to Properties of Exotic Nuclei

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Chinese Physics Letters 1998年第9期15卷 636-638页

作者： CHEN Bao-qiu MA Zhong-yu S.Krewald F.Grümmer China institute of Atomic Energy Beijing 102413and Center of Nuclear Theoretical PhysicsNational Laboratory of Heavy Ion AccelaratorLanzhou 73000 institute of Theoretical Physics Chinese Academy of SciencesBeijing 1000803 Institut fur kernphysik Forschungszentrum Jülich GmbH D-52425 JülichGermany

Density dependent relativistic HartreeFock theory has been extended to describe properties of exotic *** contribution of Fock exchange terms is emphasized in this *** turns out that the influence of Fock terms on prop... 详细信息

关键词： Fock letter turns

Generation of twisted γ-ray radiation by nonlinear Thomson scattering of twisted light

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Matter and Radiation at Extremes 2019年第2期4卷 24-29页

作者： Yue-Yue Chen Karen Z.Hatsagortsyan Christoph H.Keitel Max-Planck-Institut fur kernphysik Saupfercheckweg 169117 HeidelbergGermany

Interaction of twisted strong laser radiation with electrons in the classical regime is *** investigate transfer of the angularmomentumof absorbed laser photons to the emitted *** interaction regime is considered where radiation reaction is negligible and the formation length of radiation is comparable to or larger than the laser *** latter condition ensures that the structure of the laser field plays a role in the electron dynamics during the formation of *** the case of a single electron from that of an electron *** a single electron,the spin angular momentum of the driving laser photons is transferred to the radiation field,while the orbital angular momentum of the laser field is *** conclude that in the classical regime,to imprint the angular momentum of twisted light on radiation,an electron beam is a *** the latter case,nonlinear Thomson scattering of twisted light off an ultrarelativistic electron beam produces high-frequency radiation that is twisted,with a topological charge proportional to the harmonic order.

关键词： scattering twisted Thomson

Meson-production experiments at COSY-Jülich

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Chinese Physics C 2010年第9期34卷 1263-1268页

作者： M.Büscher institute für kernphysik and Jülich Center for Hadron Physics

Selected results from experiments at COSY-Jülich are presented： an attempt to measure the mass of the η meson with high precision （ANKE facility）,first steps towards the detection of rare η decays （WASA）,and s... 详细信息

关键词： meson production

Production of Charged Heavy Quarkonium-Like States at the LHC and Tevatron

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Communications in Theoretical Physics 2014年第3期61卷 354-358页

作者： GUO Feng-Kun Ulf-G. MeiBner WANG Wei Helmholtz-Institut fiir Strahlen- und kernphysik and Bethe Center for Theoretical Physics Universitat Bonn D-53115 Bonn Germany institute for Advanced Simulation Institut fiir Kernphysik and Jiilich Center for Hadron Physics JARA-FAME and JARA-HPC Forschungszentrum Jfilich D-52425 Jfilich Germany

We study prompt hadroproduction of the charged bottomonium-like states Zb± （10610） and Zb±（10650）, and the charged eharmonium-like states Zc± （3900） and Zc± （4020）, at the Tevatron and the LHC, provided that these states are S-wave hadronic molecules. Using two Monte Carlo event generators, Herwig and Pythia, to simulate the production of heavy meson pairs, we derive an order-of-magnitude estimate of the production rates for these four particles. Our estimates yield a cross section at the nb level for the Zb（10610） and Zb（10650）. The results for the Zc（3900） and Zc （4020） are larger by a factor of 2~30. These cross sections are large enough to be observed, and measurements at hadron colliders in the future will supplement the study using electron-positron collisions, and therefore allow to explore the mysterious nature of these exotic states.

关键词： exotic hadrons hadroproduction