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The principle of relativity, kinematics and algebraic relations

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science china({2.,Mechanics & Astronomy) 2010年第4期53卷 591-597页

作者： GUO HanYing1, HUANG ChaoGuang2.3, WU HongTu4.& ZHOU Bin5 1Institute of theoretical physics, Chinese Academy of {2., {4. 100190, china 2.nstitute of High Energy physics, Chinese Academy of {2., beijing 10004., china 3theoretical physics center for science facilities, Chinese Academy of {2., beijing 10004., china 4.epartment of Mathematics, Capital Normal University, beijing 10004., china 5Department of physics, {4. Normal University, {4. 100875, china Institute of theoretical physics Chinese Academy of Sciences Beijing China Institute of High Energy physics Chinese Academy of Sciences Beijing China theoretical physics {2. for science {4. Chinese Academy of Sciences Beijing China Department of Mathematics Capital Normal University Beijing China Department of physics Beijing Normal University Beijing China

Based on the relativistic principle and the postulate of universal invariant constants (c, l), all kinematic symmetries can be set up as the subsets of the Umov-Weyl-Fock-Hua transformations for the inertial motions. ... 详细信息

关键词： principle of relativity with (c l) Umov-Weyl-Fock-Hua transformations kinematics special relativity triple

Testing local realism in P → VV decays

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science china({2.,Mechanics & Astronomy) 2010年第5期53卷 870-875页

作者： LI JunLi1 & QIAO CongFeng1,2.1Department of physics,Graduate University of Chinese Academy of sciences,{2. {4.,china 2.5} physics center for science facilities(TPCSF),Chinese Academy of sciences,{2. {4.,china Department of physics Graduate University of Chinese Academy of Sciences Beijing China theoretical physics {2. for science {4. (TPCSF) Chinese Academy of Sciences Beijing China

It was found that the vector meson pair from the pseudoscalar decays can form an entangled *** this work we give out detailed explanations on the polarization correlation of the two entangled vector *** is demonstrated that an experimental test of the Clauser-Horne inequality can be carried out through measuring the azimuthal distribution of four pseudoscalars in the cascade decay ηc→ VV →(PP)(PP),and the measurement of this process is feasible with the current running experiments in tau-charm ***,a brief discussion on the polarization correlation of the two vector mesons from B → VV decays is also presented.

关键词： nonlocality test high energy experiment meson decays

Comparison of dark energy models:A perspective from the latest observational data

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中国科学：物理学、力学、天文学英文版 2010年第9期53卷 1631-1645页

作者： LI Miao1,2,LI XiaoDong2,3 & ZHANG Xin1,4.1Kavli Institute for theoretical physics china,Chinese Academy of sciences,{4. 100190,china 2Key Laboratory of Frontiers in theoretical physics,Institute of theoretical physics,Chinese Academy of sciences,{4. 100190,china 3Interdisciplinary center for theoretical Study,University of science and Technology of china,Hefei 230026,china 4.epartment of physics,College of sciences,Northeastern University,Shenyang 110004.china Kavli Institute for theoretical physics{2. Chinese Academy of Sciences Beijing China Key Laboratory of Frontiers in theoretical physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Interdisciplinary center for theoretical Study University of Science and Technology of China Hefei China Department of physics College of Sciences Northeastern University Shenyang China

We compare some popular dark energy models under the assumption of a flat universe by using the latest observational data including the type Ia supernovae Constitution compilation,the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey,the cosmic microwave background measurement given by the seven-year Wilkinson Microwave Anisotropy Probe observations and the determination of H0 from the Hubble Space *** comparison statistics such as the Bayesian and Akaike information criteria are applied to assess the worth of the *** statistics favor models that give a good fit with fewer *** on this analysis,we find that the simplest cosmological constant model that has only one free parameter is still preferred by the current *** other dynamical dark energy models,we find that some of them,such as the αdark energy,constant w,generalized Chaplygin gas,Chevalliear-Polarski-Linder parametrization,and holographic dark energy models,can provide good fits to the current data,and three of them,namely,the Ricci dark energy,agegraphic dark energy,and Dvali-Gabadadze-Porrati models,are clearly disfavored by the data.

关键词： dark energy models observational constraints model comparison information criteria

BRST quantization and canonical Ward identity of the supersymmetric electromagnetic interaction system

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science china({2.,Mechanics & Astronomy) 2007年第3期50卷 339-347页

作者： HUANG YongChang1,3,4. JIANG YunGuo1 & LI XinGuo2.3 1 Institute of theoretical physics, College of Applied {2., {4. University of Technology, {4. 10002., china 2.Institute of Modern physics, Chinese Academy of {2., Lanzhou 730000, china 3 center of theoretical Nuclear physics, National Laboratory of Heavy Ion Collisions, Chinese Academy of {2., Lanzhou 730000, china 4.7} center of Advanced science and Technology (World Laboratory), {4. 100080, china Institute of theoretical physics College of Applied Sciences Beijing University of Technology Beijing China center of theoretical Nuclear {2. National Laboratory of Heavy Ion Collisions Chinese Academy of Sciences Lanzhou China china center of Advanced {2. and Technology (World Laboratory) Beijing China Institute of Modern physics Chinese Academy of Sciences Lanzhou China

According to the method of path integral quantization for the canonical constrained system in Becchi-Rouet-Stora-Tyutin scheme, the supersymmetric electromagnetic interaction system was quantized. Both the Hamiltonian of the supersymmetric electromagnetic interaction system in phase space and the quantization procedure were simplified. The BRST generator was constructed, and the BRST transforma- tions of supersymmetric fields were gotten; the effective action was calculated, and the generating functional for the Green function was achieved; also, the gauge generator was constructed, and the gauge transformation of the system was ob- tained. Finally, the Ward-Takahashi identities based on the canonical Noether theorem were calculated, and two relations between proper vertices and propaga- tors were obtained.

关键词： supersymmetric electromagnetic interaction BRST quantization Ward identity

Response synchronization: New progress in brain-visual information processing

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Chinese science Bulletin 1999年第16期44卷 1447-1458页

作者： ZHAO Songnian, XIONG Xiaoyun, YAO Guozheng and GUO Aike1. State Key Laboratory of Atmospheric Boundary Layer physics and Atmospheric Chemistry , Institute of Atmospheric physics , Chinese Academy of {2. , beijing 10002., china 2. Commission of the National Natural science Foundation of china , beijing 100083, china 3. The center of Information science , Peking University, beijing 100871, china 4. Open Laboratory of Visual Information Processing , Institute of Biophysics , Chinese Academy of {2. , beijing 100101, china State Key Laboratory of Atmospheric Boundary Layer physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Commission of the National Natural science Foundation of china Beijing China The center of Information science Peking University Beijing China Open Laboratory of Visual Information Processing Institute of Biophysics Chinese Academy of Sciences Beijing China

Studies on brain-vision have entered a new stage, after the stimulus-induced y synchronized oscillation of neuron group activities have been discovered in cat primary visual cortex. Naturally, how to understand the visual system became a very important methodological problem. From aspects such as information processing, nonlinear dynamics and neuronal network, some primary problems in vision studies have been deeply discussed, which are

关键词： neuron group (neural population) synchro-oscillation computational theory of vision response synchroniza-tion.

Compression behavior of Zr_(4.)Ti_(14.Cu_(12.5)Ni_(10)Be_(2..5) bulk metallic glass up to 2. GPa

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science china({2.,Mechanics & Astronomy) 2005年第3期48卷 319-324页

作者： LI Gong 1, 2., ZHAN Zaiji 2., LIU Jing 3 , YUN Jinku 1 , SUN Liling 2., LIU Riping 1 , ZHANG Jun 2.& WANG Wenkui 1, 2.1. Key Laboratory of Metastable Materials science and Technology, Yanshan University, Qinhuangdao 066004. china 2. {2. for Condensed Matter physics, Institute of physics, Chinese Academy of sciences, beijing 100080, china 3. BSRF, Institute of High Energy physics, Chinese Academy of sciences, beijing 100039, china Key Laboratory of Metastable Materials science and Technology Yanshan University Qinhuangdao China center for Condensed Matter physics Institute of Physics Chinese Academy of Sciences Beijing China BSRF Institute of High Energy Physics Chinese Academy of Sciences Beijing China

The compression of a Zr4.Ti14.u12.5Ni10Be2..5 bulk metallic glass (BMG) is investigated at room temperature up to 2. GPa using in-situ high pressure energy dispersive X-ray diffraction with a synchrotron radiation source. The pressure-induced structural relaxation is exhibited. It is found that below about 8 GPa, the existence of excess free volume contributes to the rapid structural relaxation, which gives rise to the rapid volumetric change, and the structural relaxation results in the structural stiffness under higher pressure.

关键词： bulk metallic glass, high pressure, structural relaxation, synchrotron radiation.

Patterns of platinum-group elements in mantle peridotite, granulite xenoliths and basalt in Hannuoba

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Chinese science Bulletin 1999年第18期44卷 1676-1681页

作者： CHU Xuelei, LI Xiaolin, XU Jiuhua and LIU Jianming1. The Research center of Mineral Resources Exploration , Chinese Academy of sciences , {2. 100101, china 2. Institute of Geology , Chinese Academy of sciences , {2. 10002., china 3. Institute of High Energy physics , Chinese Academy of sciences , {2. 100817 , china 4. {2. University of {12. and Engineering , {2. 100083, china Corresponding author The Research center of Mineral Resources Exploration Chinese Academy of Sciences Beijing China Institute of Geology Chinese Academy of Sciences Beijing China Institute of High Energy physics Chinese Academy of Sciences Beijing China beijing University of science and Engineering Beijing China

Neutron activation analysis after preconcentration of nickel sulfide fire assay was used in measurement of Ru, Ph, Pd, Os, Ir, Pt (i.e. PGE elements) and Au concentrations for basalt, mantle and granulite xenoliths in Hannuoba. The chondrite- and primitive mantle-normalized PGE patterns generally exhibit flat (for Iherzolite), negative slope (for harzburgite),

关键词： mantle xenolith granulite xenolith basalt platinum-group element Hannuoba.

Estimating surface evapotranspiration using combined MODIS and CBERS-02.data

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science china(Technological {2.) 2005年第S2期48卷 145-160页

作者： XIN Xiaozhou1,2. LIU Qinhuo1, TANG Yong1,3, TIAN Guoliang1, GU Xingfa1, LI Xiaowen1,2. ZHENG Hongsheng4.& CHEN Jiayi4.1. State Key Laboratory of Remote Sensing science, Institute of Remote Sensing Applications, Chinese Academy of sciences, {2. 100101, china 2. Research center for Remote Sensing and GIS, Department of Geography, {2. Normal University, {2. 100875, china 3. Graduate University of Chinese Academy of sciences, {2. 100039, china 4. Department of Atmospheric {14., Peking University, {2. 100871, china State Key Laboratory of Remote Sensing science Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing 100101 China Research center for Remote Sensing and GIS Department of Geography Beijing Normal University Beijing 100875 China Graduate University Chinese Academy of Sciences Beijing 100039 China Department of Atmospheric physics Peking University Beijing 100871 China

Spatial scale error is one of the most serious problems in the estimates of land surface heat fluxes of sensible and latent from satellite-borne data such as MODIS 1km resolution reflectance and emissive data. One of the feasible and economic ways to decrease the spatial scale error is to use high resolution land use class data together with the MODIS data. CBERS-02.data were used to produce land use class of Baiyangdian area, Hebei Province, china in the autumn of 2.04. The area ratio of each class in MODIS pixel was calculated, and used to derive the heat fluxes of the mixed pixel. The results showed that the estimated heat fluxes of soil, sensible and latent have been changed remarkably after using the high resolution land class data. It could be concluded from the comparison between simulated and ground-measured fluxes as well as the theoretical analysis that high resolution land class data are useful to diminishing the scale error of heat fluxes estimated from low resolution satellite data.

关键词： surface evapotranspiration spatial scale error MODIS CBERS land class.

Fluorescence dynamics of interactions between polyamide PyPyPyβDp and DNA

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science china Chemistry 2006年第1期49卷 75-80页

作者： ZHANG Huijuan1,2. WANG Jin3, WU Yishi1, YUAN Gu3, AI Xicheng1, WANG Li4.& ZHANG Jianping1 1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of sciences, beijing 100080,{2. 2. School of Life science and Technology, beijing Institute of Technology, beijing 100081,{2. 3. College of Chemistry and Molecular Engineering, Peking University, beijing 100080,{2. 4. center for Condensed Matter physics, Institute of physics, Chinese Academy of sciences, beijing 100080,{2. Correspondence should be addressed to Ai Xicheng and Zhang Jianping State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing China School of Life science and Technology Beijing Institute of Technology Beijing China College of Chemistry and Molecular Engineering Peking University Beijing China center for Condensed Matter physics Institute of Physics Chinese Academy of Sciences Beijing China

The photophysical properties of the polyamide PyPyPyβDp (PPP) were investigated by means of steady-state absorption and fluorescence spectroscopies, as well as time-resolved fluo-rescence spectroscopy. It was found that the excited-state properties of PPP are very sensitive to solvents. In TKMC buffer PPP exhibited weak fluorescence with a decay time constant of 16 ps, while with the decrease of the solvent polarity PPP showed the blue-shifted peak position, increased inten-sity and lengthened life-time for its fluorescence behavior. In the presence of calf thymus DNA, it was observed that the fluorescence intensity was enhanced and the fluorescence lifetime increased from 16 to 32.ps for PPP, which verified that PPP bound into the minor groove of DNA duplex.

关键词： polyamide (PPP), calf thymus DNA (ctDNA), time-resolved fluorescence spectroscopy, recognition dynamics.