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On gl■k2.urrent Superalgebra and Twisted Conformal Field Theory

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Communications in theoretical physics 2007年第1期 69-77页

作者： DING Xiang-Mao~1 WANG Gui-Dong~(1,2. WANG Shi-Kun~(1,3)1 institute of Applied Mathematics,Academy of Mathematics and Systems Science,the Chinese Academy of Sciences,P.O.Box 2.34,beijing 100080,China2.Graduate School of the Chinese Academy of Scisences,beijing 100049,China3 KLMM,AMSS,CAS,beijing 100080,China

Motivated by the recently discovered hidden symmetry of the type IIB Green-Schwarz superstring oncertain background,the non-semisimple Kac-Moody twisted superalgebra glis investigated by means of thevector coherent state method and boson-fermion *** free field realization of the twisted current superalgebraat general level k is *** corresponding Conformal Field Theory (CFT) has zero central *** the classification theory,this CFT is a nonunitary field theory. After projecting out a U(1) factor and an outerautomorphism operator,we get the free field representation of psl,which is the algebra of glmodulothe Z-outer automorphism,the CFT has central charge -2.

关键词： superalgebra differential operator realization free field realization conformal field theory

A SUSY THEORY OF FLAVORS AND ITS ASTROPHYSICAL IMPLICATIONS

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A SUSY THEORY OF FLAVORS AND ITS ASTROPHYSICAL IMPLICATIONS

“基于羊八井平台的交叉学科研究”首届研讨会

作者： Chun Liu institute of theoretical {2., Chinese Academy of Sciences beijing 100080, China

An understanding of the lepton masses within the framework of low energy SUSY is presented. A family symmetry is introduced. Sneutrino VEV breaks this symmetry. The tau mass is due to the Higgs VEV, and muon mass purely from the sneutrino VEV. A viable model is constructed, which predicts (1-10) MeV VT. Its implications to supernova explosion and the dark matter are discussed.

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Relativistic equation of State for supernova

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Relativistic equation of State for supernova

CCAST“放射性束物理”研讨会

作者： Department of physics, Nankai University, Tianjin 300071, China institute of {2. physics, beijing 100080, China

We construct the equation of state(EOS) of nuclear matter at finite temperature anddeusity with various proton fractions within the relativistic mean field (RMF) theory forthe use in the supernova simulations. We consider nucleus, alpha-particle, proton andneutron in equilibrium at densities smaller than about pB～10g/cm by minimizingthe free energy of the nuclear *** calculation is based on the RMF theory withthe parameter set,TM1,which has been demonstrated to provide good accounts of theground and the excited state properties of finite nuclei.

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纳秒激光在K9玻璃中聚焦的损伤形貌研究

物理学报 2008年第9期57卷 5558-5564页

作者：韩敬华冯国英杨李茗张秋慧谢旭东朱启华周寿桓四川大学电子信息学院成都610064 中国工程物理研究院激光聚变研究中心绵阳621900

详细研究了纳秒激光脉冲在K9玻璃内部产生损伤的形貌特点.整个损伤形貌是前端较大、后端逐渐减小,呈纺锤形.损伤区可分为四种类型的损伤形貌:损伤点轴向的丝状等离子通道、熔化区域、裂纹区域和裂纹末端的折射率变化区域.给出了激光脉... 详细信息

详细研究了纳秒激光脉冲在K9玻璃内部产生损伤的形貌特点.整个损伤形貌是前端较大、后端逐渐减小,呈纺锤形.损伤区可分为四种类型的损伤形貌:损伤点轴向的丝状等离子通道、熔化区域、裂纹区域和裂纹末端的折射率变化区域.给出了激光脉冲能量在空间的沉积函数和冲击波膨胀压强的表达式,并根据压强的空间分布特点对相应的损伤形貌进行了分析,理论分析与实验结果相符.

关键词：激光损伤形貌移动损伤模型冲击波激光能量沉积

The Stability of Triaxial Superdeformed Shapes in Odd-Odd 160～168Lu Isotopes

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The Stability of Triaxial Superdeformed Shapes in Odd-Odd 16...

第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Tu Ya~(1 1)) CHEN Yong-Shou~(2.3 2.) YU Shao-Ying~(4)) SHEN Cai-Wan~(4)) 1(College of physics science and Technology,ShenYang Normal University,ShenYang 110034,China) 2.China institute of Atomic Energy,P.O.Box 2.5(18),{2. 102.13,China) 3(institute of theoretical physics,Chinese Academy of Sciences,{2. 100080,China) 4(School of Science,Huzhou Teachers College,Huzhou 313000,China)

The trixial superdeformed（TSD） rotational states in the odd-odd Lu isotopes are investigated by performing the configuration dependent three dimensional total routhian surface（TRS） calculations with the explicit treatment of the deformation driving effects of the high-j intruder *** fifty low lying TSD bands have been found for these odd-odd nuclei within the excitation energy of 3 MeV above the ND yrast *** configurations of calculated TSD bands have been assigned based on the TRS calculations and the analysis of *** in the rotating *** calculated equihbrium elongation and triaxial deformations for these TSD bands are close toε = 0.4 andγ=2.°,respectively,which are the typical quadrupole deformations for the wobbling bands observed in the neighboring odd-even Lu *** detailed comparisons for the calculated TRS and the deformation driving effects of the intruder high-j orbits made between odd-odd Lu nuclei and the odd-even Lu wobbling nuclei result in the similar stability of the TSD shapes,indicating the possibility to observe the wobbling excitation in the former ***,the wobbling mode as an unique signature for the triaxiality has not been discovered in the odd-odd Lu isotopes,but observed in the neighboring nuclei *** explain this puzzle based on the examination of the TSD band structure in odd-odd Lu isotopes,and found that the high level density at the second minimum in the TRS surface is the main reason for the difficulty to discover experimentally the wobbling bands in odd-odd Lu isotopes.

关键词： TRS theory triaxial superdeformation wobbling band

Computational stability of the forced dissipative nonlinear atmospheric equations

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Chinese Science Bulletin 1999年第10期44卷 949-952页

作者： LI Jianping and CHOU Jifan LASG , institute of Atmospheric physics , Chinese Academy of Sciences , {2. 100080, China Department of Atmospheric Sciences , Lanzhou University , Lanzhou 730000, China {2. Meteorological College, {2. 100081, China LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Department of Atmospheric Sciences Lanzhou University Lanzhou China beijing Meteorological College Beijing China

A new concept of computational quasi-stability (CQS) is introduced to study the computational stability (CS) of the forced dissipative nonlinear (FDN) evolution equations. Based on the concept, the CQS criterion of difference scheme of FDN atmospheric equations is obtained. So it provides the theoretical basis for designing the computational stable difference scheme of FDN atmospheric equations.

关键词： computational stability (CS) computational quasi-stability (CQS) operator equation difference scheme forced dissipative nonlinear (FDN) equations.

Phase Transition between Hadronic Matter and Quark Gluon Plasma

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Phase Transition between Hadronic Matter and Quark Gluon Pla...

CCAST“第六届全国高能多粒子产生和重离子碰撞”研讨会

作者： WU Tao, GAO Chong-shouDepartment of physics, Peking University, beijing 100871 {2. of theoretical physics, Academia Sinica, beijing 100080

On account of the effect of the proper volume of hadrons, the critical temperature and the critical nucleon density of phase transition between hadronic matter phase and quark gluon plasma phase are estimated from the...

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FREQUENT ACTIVITIES OF STRONGER AEROTROUGHS IN EAST ASIA IN WINTERTIME AND THE OCCURRENCE OF THE EI Nino EVENT

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Science China Chemistry 1989年第8期32卷 976-985页

作者：李崇银 institute of Atmospheric physics Academia Sinica Beijing

In this paper, some data analyses and theoretical discussion show that there are frequentactivities of stronger aerotroughs (cold surges) in East Asia during the wintertime priorto the occurrence of El Nino, and the disturbance energies acompanied with the stronger coldsurges in East Asia are frequently dispersed southeastward from Siberia to the central westernPacific. The trade winds will be weakened and the convections will be enhanced over theequatorial central western Pacific by the strong cold surges. Then the El Nino event willoccur. A possible important process or mechanism to cause the El Nino event is suggested.

关键词： aerotroughs in East Asia cold surges El Nino event

Spectra of anti-nucleons in the vacuum of finite nuclei

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Spectra of anti-nucleons in the vacuum of finite nuclei

第十二届全国核物理大会暨第七届会员代表大会

作者： Guangjun Mao 1 institute of High Energy physics, Chinese Academy of Sciences RO. Box 918(4), {2. 100039, ER. China 2.institute of theoretical physics, Frankfurt University Postfach 11 19 32. D-60054 Frankfurt am Main, Germany

The quantum vacuum in a many-body system of finite nuclei has been investigated within the relativistic Hartree approach which describes the bound states of nucleons and anti-nucleons *** contributions of the Dirac se...

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