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arXiv · 0910.5509

Vacuum Ambiguity in de Sitter Space at Strong Coupling

Jimmy A. Hutasoit
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Abstract

It is well known that in the weak coupling regime, quantum field theories in de Sitter space do not have a unique vacuum, but a class of vacua parametrized by a complex parameter $α$, i.e., the so-called $α$-vacua. In this article, using gauge/gravity duality, we calculate the symmetric two-point function of strongly coupled ${\cal N}=4$ supersymmetric Yang-Mills theory on $dS_3$. We find that there is a class of de Sitter invariant vacua, parametrized by a set of complex parameters $\{α_ν\}$.

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Jimmy A. Hutasoit. 2010-02-15. Vacuum Ambiguity in de Sitter Space at Strong Coupling. https://doi.org/10.1007/jhep02(2010)026

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