Programme

P.36 -- Posters, VCTP-51

Date: Tuesday, 4 August 2026

Time: 09:30 - 10:30

De Sitter vacuum on nucleated D-branes with stringy corrections

Cao Hoang Nam

Institute of Theoretical and Applied Research, Duy Tan University

We present four-dimensional de Sitter (dS) vacuum solutions on probe D-branes nucleating in a background, which is a U(1) charged black hole solution of IIB supergravity, including stringy corrections. A sufficiently high chemical potential induced by the wrapped D3-brane charge, inducing an instability in the system, is essential to lead to the nucleation of the probe D-branes. We show that stringy corrections can yield a dS vacuum on spherical D-branes consistent with the observations without fine-tuning.

Presenter: Cao Hoang Nam