Merging timelike and spacelike surfaces

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SUMMARY

The discussion centers on a proposed method for determining boundary length by merging timelike and spacelike surfaces that are homologous to the boundary and possess a well-defined first derivative at the merging point. The feasibility of this procedure in the context of thermal Anti-de Sitter (AdS) space, particularly when the boundary is at infinity, is questioned. The referenced paper provides insights into this merging technique and its implications for boundary conditions in theoretical physics.

PREREQUISITES
  • Understanding of timelike and spacelike surfaces in differential geometry
  • Familiarity with the concept of homology in topology
  • Knowledge of boundary conditions in theoretical physics
  • Basic principles of thermal Anti-de Sitter (AdS) space
NEXT STEPS
  • Research the mathematical framework of merging surfaces in differential geometry
  • Explore the implications of homology on boundary conditions in theoretical physics
  • Study the properties of thermal Anti-de Sitter (AdS) space and its boundaries
  • Investigate existing literature on boundary length determination techniques in theoretical models
USEFUL FOR

The discussion is beneficial for theoretical physicists, mathematicians specializing in geometry and topology, and researchers exploring the properties of Anti-de Sitter space and its implications in quantum gravity.

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TL;DR
How to merge spacelike and timelike surfaces in the case of thermal AdS?
In the following paper, there is a statement which says:

We propose to determine the boundary length by merging smoothly the timelike and spacelike surfaces in such a way that they are homologous to the boundary and have a well-defined first derivative at the merging point.

Can this procedure be done in the case of thermal AdS, where the boundary is at infinity?


[1]: https://arxiv.org/abs/2404.01393
 

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