Null geodesics and improved unique continuation for waves in asymptotically anti-de Sitter spacetimes
Null geodesics and improved unique continuation for waves in asymptotically anti-de Sitter spacetimes
复制标题
渐近反德西特时空中波的零测地线和改进的独特延拓
DOI:
10.1088/1361-6382/abcfd1
复制
发表时间:
2020
影响因子:
3.5
通讯作者:
McGill A
中科院分区:
文献类型:
--
作者:
McGill A
We consider the question of whether solutions of Klein–Gordon equations on asymptotically anti-de Sitter spacetimes can be uniquely continued from the conformal boundary. Positive answers were first given in [15, 16], under suitable assumptions on the boundary geometry and with boundary data imposed over a sufficiently long timespan. The key step was to establish Carleman estimates for Klein–Gordon operators near the conformal boundary. In this article, we further improve upon the above-mentioned results. First, we establish new Carleman estimates—and hence new unique continuation results—for Klein–Gordon equations on a larger class of spacetimes than in [15, 16], in particular with more general boundary geometries. Second, we argue for the optimality, in many respects, of our assumptions by connecting them to trajectories of null geodesics near the conformal boundary; these geodesics play a crucial role in the construction of counterexamples to unique continuation. Finally, we develop a new covariant formalism that will be useful—both presently and more generally beyond this article—for treating tensorial objects with asymptotic limits at the conformal boundary.
登录
查看更多内容
影响因子:
2.4
作者:
C. Warnick
通讯作者:
C. Warnick
影响因子:
2.6
作者:
A. Enciso;Arick Shao;B. Vergara
通讯作者:
A. Enciso;Arick Shao;B. Vergara
影响因子:
1.5
作者:
Anderson, Michael T.;Herzlich, Marc
通讯作者:
Herzlich, Marc
影响因子:
2.4
作者:
Arick Shao
通讯作者:
Arick Shao
影响因子:
2.4
作者:
G. Holzegel;Arick Shao
通讯作者:
Arick Shao