6 papers
Four-dimensional de Sitter cosmology on D-branes nucleated in an asymptotically background
Cao H. Nam
We find 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 st…
Physical implications of a double right-handed gauge symmetry
Duong Van Loi, A. E. Cárcamo Hernández, N. T. Duy +2
Guided by the flipping principle, we propose a novel extension of the Standard Model based on a double right-handed gauge symmetry. In this framework, all left-handed fermio…
A novel force from the curved field space: Lepton flavor violation and
Cao H. Nam
We find that the nonzero curvature extension of the field space for the charged leptons induces a peculiar force, leading to an elegant and simple mechanism for generating the char…
Scoto-seesaw model implied by flavor-dependent Abelian gauge charge
Duong Van Loi, N. T. Duy, Cao H. Nam +1
Assuming fundamental fermions possess a new Abelian gauge charge that depends on flavors of both quark and lepton, we obtain a simple extension of the Standard Model, which reveals…
Topological equivalence and phase transition rate in holographic thermodynamics of regularized Maxwell theory
Tran N. Hung, Cao H. Nam
Utilizing the holographic dictionary from the proposal that treats Newton's constant as a thermodynamic variable, we establish a thermodynamic topological equivalence between the A…
Brane-vector dark matter and its connection to inflation and primordial gravitational waves
Cao H. Nam, Tran N. Hung
The scalar mode describing the fluctuation of the 3-brane (the observable universe) in a five-dimensional bulk spacetime compactified on a circle is absorbed by the Kaluza-Klein U(…