Raphael Dulac

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20242026

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hep-th2026

A Tale of Two Hartle-Hawking Wave Functions: Fully Gravitational vs Partially Frozen

Galit Anikeeva, RaphaÃ«l Dulac, Zixia Wei +1

We revisit the Hartle-Hawking wave function in AdS spacetime, where natural spatial slices are open and require an additional spacetime boundary. This leads to two constructions: a…

hep-th2026

No boundary density matrix in elliptic de Sitter dS/ $Z_{2}$

RaphaÃ«l Dulac, Zixia Wei

Elliptic de Sitter (dS) spacetime dS $/ Z_{2}$ is a non-time-orientable spacetime obtained by imposing an antipodal identification to global dS. Unlike QFT on global dS, whose…

hep-th2026

Zooming out of AdS $_{4} \times$ S $^{2} \times$ S $^{2}$ : The Branes behind the CFT's

Iosif Bena, Antoine Bourget, RaphaÃ«l Dulac +2

We reveal the supersymmetric brane configurations that give rise to AdS $_{4} \times$ S $^{2} \times$ S $^{2}$ supergravity solutions, which are holographic duals to three-dimensional $N = 4$ CFT…

A Tale of Two Hartle-Hawking Wave Functions: Fully Gravitational vs Partially Frozen

No boundary density matrix in elliptic de Sitter dS/Z2​

Zooming out of AdS4​×S2×S2: The Branes behind the CFT's

No boundary density matrix in elliptic de Sitter dS/ $Z_{2}$

Zooming out of AdS $_{4} \times$ S $^{2} \times$ S $^{2}$ : The Branes behind the CFT's