【摘 要】
:
In this study,we investigate the Hawking radiation in higher dimensional Reissner-Nordstr?m black holes as received by an observer located at infinity.The frequency-dependent transmission rates,which deform the thermal radiation emitted in the vicinity of
【机 构】
:
Hubei Subsurface Multi-scale Imaging Key Laboratory,Institute of Geophysics and Geomatics,China Univ
论文部分内容阅读
In this study,we investigate the Hawking radiation in higher dimensional Reissner-Nordstr?m black holes as received by an observer located at infinity.The frequency-dependent transmission rates,which deform the thermal radiation emitted in the vicinity of the black hole horizon,are evaluated numerically.In addition to those in four-dimensional spacetime,the calculations are extended to higher dimensional Reissner-Nordstr?m metrics,and the results are observed to be sensitive to the spacetime dimension to an extent.Generally,we observe that the trans-mission coefficient practically vanishes when the frequency of the emitted particle approaches zero.It increases with frequency and eventually saturates to a certain value.For four-dimensional spacetime,the above result is demon-strated to be mostly independent of the metric\'s parameter and the orbital quantum number of the particle,when the location of the event horizon,rh,and the product of the charges of the black hole and the particle qQ are known.However,for higher-dimensional scenarios,the convergence becomes more gradual.Moreover,the difference between states with different orbital quantum numbers is observed to be more significant.As the magnitude of the product of charges qQ becomes more significant,the transmission coefficient exceeds 1.In other words,the result-ant spectral flux is amplified,which results in an accelerated process of black hole evaporation.The relationship of the calculated outgoing transmission coefficient with existing results on the greybody factor is discussed.
其他文献
McAllister三体模型的关联性限制了其拓展应用,本文在搜集文献中14类系列型烃类混合物黏度实验数据的基础上,拟合得到了其模型参数.分析发现,McAllister三体模型的两个待定参数(v12与v21)与等效沸点(Tbij)及实验温度(T)间存在一定的规律,由此获得了模型参数的定量推算关系,进而建立了一种具有预测同系列烃类混合物黏度的通用化McAllister三体模型.将新模型的计算结果与实验值进行比较表明,对于所有二元体系的总体平均相对偏差为0.79%,最大相对偏差为7.22%.
In this work,we attempt to construct the Lax connections of T(T)-deformed integrable field theories in two different ways.With reasonable assumptions,we make an ansatz and find the Lax pairs in the T~-deformed af-fine Toda theories and the principal chira
We show that the signature of two boosted W-jets plus substantial missing energy is very promising for probing heavy charged resonances (X±) through the process of pp → X+X → W+ W-X0X0,where X0 denotes the dark matter candidate.The hadronic decay mode of
In this study,we investigated the entrance channel effect on the evaporation residue cross section of a su-perheavy element 296119.Using 29 projectile-target combinations,we investigated the role of the entrance channel on the 3n and 4n evaporation channe
Systematic calculations of low-lying energy levels,B(E2) transitions,and g factors of even-even telluri-um isotopes with mass numbers from 128 to 140 are performed via the nucleon-pair approximation (NPA) of the shell model with phenomenological multipole
The first Water Cherenkov detector of the LHAASO experiment(WCDA-1)has been operating since April 2019.The data for the first year have been analyzed to test its performance by observing the Crab Nebula as a standard candle.The WCDA-1 achieves a sensitivi
We study the triply heavy baryons ΩQQQ (Q =c,b) in the QCD sum rules by performing the first calcu-lation of the next-to-leading order (NLO) contribution to the perturbative QCD part of the correlation functions.Compared with the leading order (LO) result
The dynamics of high-energy proton-induced spallation reactions on target nuclides of 56Fe,58Ni,107Ag,112Cd,184W,181Ta,197Au,and 208Pb are investigated with the quantum molecular dynamics transport model motiv-ated by the China initiative Accelerator Driv
针对离子液体[BMP][Tf2N]的物性数据缺乏的问题,本文在101.325 KPa下对[BMP][Tf2N]在温度范围为278.15~338.15 K的黏度和温度范围为298.15~338.15 K的密度、电导率进行了实验测定,结果表明:黏度、密度和电导率均受温度的影响较大,当压力一定时,[BMP][Tf2N]的黏度、密度随温度的升高而减小;而电导率随温度的升高而增大;通过选择分别用Arrhenius方程、自然对数方程和VFT方程关联[BMP][Tf2N]的黏度、密度和电导率;结果表明:模型值与实验值的
This paper presents the impact of the lepton transverse momentum plT threshold on the W boson charge asymmetry predictions in perturbative QCD for the inclusive W±+X → l±v+X production in proton-proton(pp)collisions.The predictions are obtained at various