3 papers
hep-th2026
Robin boundary conditions in global AdS: exact double-trace thermodynamics and a soft-mode instability
David A. Lowe, Juanyi Yang
We consider a conformally coupled scalar field in four-dimensional global anti-de Sitter space with Robin boundary conditions, parametrized by an angle . On the boundary cylinde…
hep-th2026
Robin holography in AdS and BTZ: double-trace RG flow and exceptional points
Yiru Wang, Juanyi Yang
We construct the exact Robin bulk-to-boundary propagator for a Breitenlöhner--Freedman scalar on AdS and the BTZ black hole, realizing the double-trace RG flow between stan…
hep-th2024
Holographic Reconstruction of Gravitational Perturbations in AdS/CFT and Implications for Celestial Conformal Field Theory
David A. Lowe, Yiru Wang, Juanyi Yang
We begin by reexamining the holographic reconstruction of scalar fields in four-dimensional anti-de Sitter spacetime, adopting a purely Lorentzian signature derivation, reproducing…