含物质纯重力场部分贡献的静态和稳态重力场研究  

The study of static and stable gravitational fields by using the gravitational field theory including the energy-momentum tensor of the pure gravitational field part of matter

作　　者：娄太平[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004

出　　处：《物理学报》2005年第1期18-23,共6页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :5 0 2 740 3 0 );辽宁省自然科学基金(批准号:2 0 0 3 2 0 2 7)资助的课题~~

摘　　要：给出了包含重力场贡献在内具有宇宙因子项最普遍形式的重力场方程为Rμν -gμνR 2 +λgμν =8πG(T(Ⅰ )μν +T(Ⅱ )μν ) c4 ,这里λ为Einstein宇宙常数 ,T(Ⅰ )μν ,T(Ⅱ )μν 分别代表物质纯物质部分和纯重力场部分的能量_动量张量 .物质纯重力场部分的能量_动量张量表述为T(Ⅱ )μν =(DμρDρν -gμνDαβDαβ 4 ) 4πG ,式中Dμν 的定义为Dμν =ωμ/xν -ων/xμ ,ωμ ≡-c2 gμ0 g0 0 .并用重力场贡献在内最普遍形式的重力场方程分别研究了几个大家所熟悉的静态和稳态重力场 ,像带有Einstein宇宙因子λ项球对称纯物质球外部静态度规、静态荷电球外部度规、匀速转动星体外部度规及理想纯物质星体内部静态平衡等 。In this paper, a general gravitational field theory containing the effect of cosmic constant and the energy-momentum tensor of the pure gravitational field part of matter is proposed. The equation of the grovitational field is R-munu - g(munu)R/2 + lambdag(munu) = 8piG (T-munu((I)) + T-munu((I)))/c(4), where A is Einstein's cosmic constant, T-munu((I)) and T-munu((II)) are energy-momentum tensor of the pure matter part and pure gravitational field part, respectively. T-munu((II)) can be expressed by T-munu((II)) = (DmunuDnurho - g(munu)D(alphabeta)D(alphabeta)/4)/4piG, where D-munu = partial derivativeomega(mu)/partial derivativex(v) - partial derivativeomega(v)/partial derivativex(mu), and the vector is defined as: omega(mu) equivalent to - c(2)g(mu0)/rootg(00). The several static and stable gravitational fields, such as the external static metric tensor of an isolated globular symmetric pure matter which contain Einstein's cosmic constant or that with charge, the external stable metric tensor of a rotation isolated globular symmetric pure matter or that with charge, and the internal static gravitational equilibrium in a globular symmetric pure ideal fluid star matter are studied and discussed respectively by the general gravitational field theory which contains the energy-momentum tensor of pure gravitational field part of in matter.

关 键 词：纯物质 重力场 因子 度规 场方程 部分和 球对称 宇宙常数 星体 能量-动量张量 

分 类 号：O412.1[理学—理论物理]