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广义Schwarzschild黑洞的电磁扰动拟正则模
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作者 周昺路 朱炯明 李新洲 《上海师范大学学报(自然科学版)》 2000年第4期41-44,共4页
研究了广义 Schwarzschild黑洞的电磁扰动 ,得到了广义 Schwarzschild黑洞外部时空中电磁势所满足的微分方程 ,讨论了 3种情况下方程中的等效势函数 V与 r* 的关系 ,并用数值计算的方法得到了相应的拟正则模 .
关键词 黑洞 电磁扰动 拟正则模 广义SChwArzsChilD黑洞
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电磁扰动下Kerr-Newman黑洞的拟正则模
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作者 王春浩 涂泓 朱炯明 《上海师范大学学报(自然科学版)》 2008年第2期148-152,共5页
对黑洞周围场的拟正则模的研究有助于证实黑洞的存在和揭示其内部性质.选取Kerr-Newman黑洞作为研究对象,以电磁场作为初始扰动场,运用数值模拟方法给出若干客观的图像,并分析、讨论黑洞的不同参量对拟正则模的影响.
关键词 Kerr—Newman黑洞 电磁场 拟正则模 数值
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黑洞的指纹:拟正则模方法和意义
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作者 赖劼 翟向华 李新洲 《科学》 北大核心 2011年第6期11-14,共4页
物理学家常说处于平衡状态的孤立黑洞是宇宙中最简单的客体,它们只依赖于质量、角动量和电荷3个物理参数。惠勒(J.Wheeler)将这个性质称为“无毛发定理”,中国学者有时戏谑地将其称为“三毛定理”。然而,宇宙中并不存在孤立的黑... 物理学家常说处于平衡状态的孤立黑洞是宇宙中最简单的客体,它们只依赖于质量、角动量和电荷3个物理参数。惠勒(J.Wheeler)将这个性质称为“无毛发定理”,中国学者有时戏谑地将其称为“三毛定理”。然而,宇宙中并不存在孤立的黑洞,无论是星系中心的黑洞还是其他黑洞,它们周围都复杂地分布着各种物质. 展开更多
关键词 施瓦西黑洞 克尔黑洞 拟正则模 视界哑洞
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在quintessenc中极端整体单极子黑洞的拟正则模
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作者 奚萍 《上海师范大学学报(自然科学版)》 2010年第1期43-49,共7页
利用WKB法,研究了在quintessenc中极端整体单极子黑洞的拟正则模,主要目的在于研究拟正则频率和黑洞的特征参量之间的关系.研究结果表明;拟正则频率的实部和虚部均随着角量子数的增加而增加;拟正则频率实部和虚部的绝对值随着立体亏损... 利用WKB法,研究了在quintessenc中极端整体单极子黑洞的拟正则模,主要目的在于研究拟正则频率和黑洞的特征参量之间的关系.研究结果表明;拟正则频率的实部和虚部均随着角量子数的增加而增加;拟正则频率实部和虚部的绝对值随着立体亏损角参量的增加而增加,而与在r=1处的quintessence的密度大小以及黑洞质量的关系正好相反. 展开更多
关键词 极端黑洞 整体单极子 QUINTESSENCE 拟正则模
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真空无奇点黑洞的拟正则模:无质量标量场扰动
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作者 奉勇辉 刘道军 《上海师范大学学报(自然科学版)》 2015年第2期122-126,共5页
研究带有de Sitter中心的球对称黑洞在标量场扰动下的拟正则模.几何上来讲,这种黑洞在半径r很大的时候趋近与史瓦西解形式,在r趋于0的时候是de Sitter解形式的.在这里通过变化参数r0(它与宇宙学常数有关),角量子数l,泛音数n和黑洞质量M... 研究带有de Sitter中心的球对称黑洞在标量场扰动下的拟正则模.几何上来讲,这种黑洞在半径r很大的时候趋近与史瓦西解形式,在r趋于0的时候是de Sitter解形式的.在这里通过变化参数r0(它与宇宙学常数有关),角量子数l,泛音数n和黑洞质量M来研究这个黑洞的拟正则模ω.计算结果发现:拟正则模在随r0的变化出现极大值和极小值,同时对于一定范围的r0,当拟正则模随泛音数n变化时也会出现极值现象,这是值得关注的. 展开更多
关键词 真空无奇点黑洞 拟正则模 6阶WKB近似
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标量场扰动和黑洞相变(英文)
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作者 陆继宗 蒋元方 《华东师范大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第5期128-133,共6页
讨论了在无质量BTZ黑洞背景中的标量场扰动,发现在此情况下,只存在正则模.这一结果与原始无旋转BTZ黑洞的情况不同,这反映了无质量BTZ黑洞可能是一种与原始无旋转BTZ黑洞不同的相.
关键词 黑洞 拟正则模 相变 标量场扰动
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Schwarzschild anti-de sitter小黑洞的电磁扰动(英文)
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作者 奚萍 朱炯明 《上海师范大学学报(自然科学版)》 2005年第1期36-40,共5页
通过数值模拟研究了在Schwarzschildanti-deSitter小黑洞周围电磁场的演化情况.得到的两幅图显示出小黑洞周围电磁场的拟正则模和小黑洞的标量场及大黑洞的电磁场的拟正则模的不同之处.
关键词 电磁场扰动 拟正则模 小黑洞
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Homomorphism and Isomorphism of Regular Power Ring 被引量:3
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作者 姚炳学 《Chinese Quarterly Journal of Mathematics》 CSCD 2000年第2期23-28,共6页
The upgrade of all kinds of algebraic structures has been emphasized with the development of fuzzy mathematics.The concept of hypergroup was raised first by Prof.LI Hong_xing in [1]and HX ring was done in [2].In thi... The upgrade of all kinds of algebraic structures has been emphasized with the development of fuzzy mathematics.The concept of hypergroup was raised first by Prof.LI Hong_xing in [1]and HX ring was done in [2].In this paper ,some properties of power ring and quasi_quotient ring are further studied based on paper [3~6].Especially,several theorems of homomorphism and isomorphism of regular power ring are established. 展开更多
关键词 subsemiring semiideal HX ring power ring regular power ring quasi_quotient ring
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Signature of Different Phases of Ricci Flat Black Holes and AdS Solitons in Gauss-Bonnet Gravity
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作者 YE Chi-Zhou 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第12期1336-1340,共5页
From the perturbation around the background spacetimes in the Gauss Bonnet gravity, we find the physical evidence that Ricci fiat AdS black holes and AdS solitons are different physical configurations and stay in diff... From the perturbation around the background spacetimes in the Gauss Bonnet gravity, we find the physical evidence that Ricci fiat AdS black holes and AdS solitons are different physical configurations and stay in different phases, this serves as a strong support to the previous mathematical and thermodynamieal arguments. 展开更多
关键词 quasi-normal modes Gauss Bonnet gravity Ricci fiat black holes AdS solitons
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Seismic high-resolution processing method based on spectral simulation and total variation regularization constraints
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作者 Guo Xin Gao Jian-Hu +3 位作者 Yin Xun-De Yong Xue-Shan Wang Hong-Qiu Li Sheng-Jun 《Applied Geophysics》 SCIE CSCD 2022年第1期81-90,145,共11页
There is little low-and-high frequency information on seismic data in seismic exploration,resulting in narrower bandwidth and lower seismic resolution.It considerably restricts the prediction accuracy of thin reservoi... There is little low-and-high frequency information on seismic data in seismic exploration,resulting in narrower bandwidth and lower seismic resolution.It considerably restricts the prediction accuracy of thin reservoirs and thin interbeds.This study proposes a novel method to constrain improving seismic resolution in the time and frequency domain.The expected wavelet spectrum is used in the frequency domain to broaden the seismic spectrum range and increase the octave.In the time domain,the Frobenius vector regularization of the Hessian matrix is used to constrain the horizontal continuity of the seismic data.It eff ectively protects the signal-to-noise ratio of seismic data while the longitudinal seismic resolution is improved.This method is applied to actual post-stack seismic data and pre-stack gathers dividedly.Without abolishing the phase characteristics of the original seismic data,the time resolution is signifi cantly improved,and the structural features are clearer.Compared with the traditional spectral simulation and deconvolution methods,the frequency distribution is more reasonable,and seismic data has higher resolution. 展开更多
关键词 high-resolution seismic processing total variation regularization spectral simulation Hessian matrix
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Effect of Charge, Size and Temperature on Stability of Charged Colloidal Nano Particles 被引量:1
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作者 A.Golchoobi A.Khosravi +1 位作者 H.Modarress A.Ahmadzadeh 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2012年第5期617-624,I0004,共9页
Molecular simulation of charged colloidal suspension is performed in NVT canonical ensemble using Monte Carlo method and primitive model. The well-known Derjaguin-Landau-Verwey- Overbeek theory is applied to account f... Molecular simulation of charged colloidal suspension is performed in NVT canonical ensemble using Monte Carlo method and primitive model. The well-known Derjaguin-Landau-Verwey- Overbeek theory is applied to account for effective interactions between particles. Effect of temperature, valance of micro-ions and the size of colloidal particles on the phase stability of the solution is investigated. The results indicate that the suspension is more stable at higher temperatures. On the other hand, for a more stable suspension to exist, lower micro- ion valance is favorable. For micro-ions of higher charge the number of aggregates and the number of particle in each of aggregate on average is higher. However for the best of our results larger colloidal particle are less stable. Comparing the results with theoretical formula considering the influence of surface curvature shows qualitative consistency. 展开更多
关键词 Simulation COAGULATION Colloidal phenomenon STABILITY Electrostatic force Dispersion force
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