On the linearization of Regge calculus

On the linearization of Regge calculus
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关于Regge演算的线性化

DOI:
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发表时间:
2011
影响因子:
2.1
通讯作者:
S. Christiansen
S. Christiansen
中科院分区:
数学2区
文献类型:
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作者:
S. Christiansen

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研究了三维Regge微积分在欧氏度量下的线性化问题。我们给出了相应的二次型的显式公式,并将其与出现在爱因斯坦-希尔伯特作用量的二次部分以及线弹性复数中的旋度t卷曲算子联系起来。我们在这个综合体的离散版本中插入Regge指标,配备了密集定义的和通勤的插值器。我们证明了用Regge作用在Regge度规上的二次部分逼近的Curl-t-Curl算子的特征对收敛到它们的连续特征对,从而将计算解释为非协调有限元方法。
We study the linearization of three dimensional Regge calculus around Euclidean metric. We provide an explicit formula for the corresponding quadratic form and relate it to the curl t curl operator which appears in the quadratic part of the Einstein–Hilbert action and also in the linear elasticity complex. We insert Regge metrics in a discrete version of this complex, equipped with densely defined and commuting interpolators. We show that the eigenpairs of the curl t curl operator, approximated using the quadratic part of the Regge action on Regge metrics, converge to their continuous counterparts, interpreting the computation as a non-conforming finite element method.
时空有限元、不连续伽辽金和有限差分演化格式
DOI: 10.1088/0264-9381/26/17/175011
发表时间: 2009
影响因子: 3.5
作者:
G. Zumbusch
通讯作者: G. Zumbusch