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arXiv 0709.1232math-phhep-thmath.MP
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由广义锥导出的Laplace型算子的一般自伴扩张的函数行列式

Functional determinants for general self-adjoint extensions of Laplace-type operators resulting from the generalized cone

Klaus Kirsten, Paul Loya, Jinsung Park

摘要:

本文考虑广义锥上Laplace型算子的zeta正则化行列式。对于广义锥上奇异常微分算子矩阵的{ \it arbitrary}自伴扩张,给出了行列式的封闭表达式.结果涉及到有限维向量空间的自同态的行列式,自同态编码选择的自伴扩张。对于特殊的例子,如弗里德里希的推广,答案很容易从一般结果中提取出来。结合\cite{BKD},得到了广义锥上全Laplace型算子的任意自伴扩张的行列式的封闭表达式.

英文摘要:

In this article we consider the zeta regularized determinant of Laplace-type operators on the generalized cone. For {\it arbitrary} self-adjoint extensions of a matrix of singular ordinary differential operators modelled on the generalized cone, a closed expression for the determinant is given. The result involves a determinant of an endomorphism of a finite-dimensional vector space, the endomorphism encoding the self-adjoint extension chosen. For particular examples, like the Friedrich's extension, the answer is easily extracted from the general result. In combination with \cite{BKD}, a closed expression for the determinant of an arbitrary self-adjoint extension of the full Laplace-type operator on the generalized cone can be obtained.

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