Higgs Phenomenon for the Graviton in Ads Space
M. Porrati
TL;DR
This paper reviews how Einstein gravity coupled with a conformal field theory in Anti de Sitter space can acquire mass through boundary conditions and the unique causal structure of AdS space.
Contribution
It summarizes recent findings on the Higgs-like phenomenon for the graviton in AdS space, highlighting the role of boundary conditions and spacetime structure.
Findings
Standard 4D Einstein gravity can become massive in AdS with CFT coupling.
Transparent boundary conditions are crucial for the mass generation.
AdS space's non-global hyperbolicity influences gravitational phenomena.
Abstract
In this review, we summarize recent findings that show how standard 4-d Einstein gravity coupled to a conformal field theory can become massive in Anti de Sitter Space. Key ingredients in this phenomenon are non-standard ``transparent'' boundary condition given to the CFT fields and the fact that AdS space is not globally hyperbolic, due to the presence of a time-like boundary.
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