Quintessence黑洞的量子隧穿效应以及黑洞遗迹

天文观测发现了暗能量的存在,因此可以讨论暗能量所包围的静态球对称黑洞。运用了Parikh的量子隧穿模型,研究了Quintessence黑洞的量子隧穿过程以及黑洞遗迹问题。结果表明,在能量守恒的条件下,黑洞外视界和宇宙视界处的粒子出射率与Bekenstein-Hawking熵有关,辐射谱不再是严格的纯热谱。在考虑一级修正后得到具有对数项的粒子隧穿几率,并讨论了黑洞遗迹的存在的可能性。     

Gibbons—Maeda Dilation黑洞的量子隧穿效应

运用Parikh的量子隧穿方法，研究了静态球对称Gibbons—Maeda dilation黑洞的量子隧穿效应．当考虑粒子的自引力作用和能量守恒时，Gibbons—Maeda dilation黑洞视界处的粒子隧穿率与Bekenstein—Hawking熵有关，黑洞真实的辐射谱不再是严格的纯热谱．本文所得隧穿率在特殊情况下与Schwarzschild黑洞的结果一致，在忽略ω的高次方项的条件下，可以得到Gibbons—Maeda dilation黑洞辐射的纯热谱．     

一般静态球对称黑洞的Hawking隧穿辐射

运用Parikh-wilczek的量子隧穿模型和黑洞热力学第一定律研究一般静态球对称黑洞的Hawkoing辐射,得到了静止质量为零和不为零的粒子穿过黑洞事件视界的出射率具有完全相同的函数形式,发现粒子的量子隧穿辐射谱与黑洞的Bekenstei-Hawking熵变有关,辐射谱不再是严格的纯热谱.     

Vaidya de Sitter黑洞在乌龟坐标变换下的热辐射机制

运用两种不同的乌龟坐标变换,我们研究了Vaidya de Sitter黑洞的标量粒子的隧穿情况.最终得到了黑洞视界附近辐射粒子的隧穿率以及视界处的霍金温度,通过比较会发现其结果不会因坐标变化的不同而发生改变.     

荷电旋转BTZ黑洞的Hawking隧穿辐射

运用Parikh量子隧穿模型,研究荷电旋转BTZ黑洞的量子隧穿效应.其结果表明:在能量守恒和角动量守恒的条件下,黑洞视界处的粒子出射率与熵变有关,辐射谱不再是严格的纯热谱.     

Schwarzschild de Sitter黑洞的量子隧穿辐射

作者在研究Schwarzschild de Sitter黑洞纯热谱的基础上,又采用量子隧穿方法对该黑洞的隧穿辐射进行研究.结果表明,Schwarzschild de Sitter黑洞视界处的粒子隧穿率与BekensteinHawking熵有关,证实其辐射谱不再是严格的纯热谱.     

含整体单极子的Vaidya-de Sitter黑洞的隧穿效应及辐射修正谱

将Parikh-Wilczek的半经典隧穿方法推广到含整体单极子的Vaidya-deSitter黑洞.注意到Hawking辐射是黑洞事件视界附近由于真空涨落而引发的一种量子隧穿,在考虑辐射粒子自引力作用的情况下,计算了粒子的隧穿率及其相应的辐射修正谱,结果满足量子理论的幺正性定理.     

Vaidya-Bonner黑洞的隧穿效应及出射修正谱

 将Parikh-Wilczek的半经典隧穿方法推广到动态Vaidya-Bonner黑洞.注意到Hawking辐射是黑洞事件视界附近由于真空涨落而引发的一种量子隧穿,在考虑辐射粒子自引力作用的情况下,计算了粒子的隧穿率及其相应的出射修正谱,结果满足量子理论的幺正性定理.     

Reissner-Nordstrm de Sitter黑洞的电磁粒子隧穿辐射

在Reissner-Nordstrm de Sitter黑洞时空背景下,采用Parikh-Wilczek半经典隧穿方法,计算了带有电荷和磁荷的静质量非零粒子在黑洞视界面上的隧穿率.结果表明,黑洞事件视界和宇宙视界处粒子的隧穿率与Bekenstein-Hawking熵有关,真实的辐射谱不再是严格的纯热谱,但这是对Hawking纯热谱的正确修正,结果满足量子理论的幺正性定理.     

量子引力对狄拉克粒子隧穿行为的影响

本文讨论了二维时空中狄拉克粒子的隧穿行为.标准的霍金温度通过狄拉克粒子隧穿视界得到.当考虑到量子引力效应时,黑洞的温度不仅由黑洞本身决定,同时,还受辐射粒子的能量和质量的影响.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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