10 citations · 45 across the 11 of their papers we have counts for
11 papers
Progenitor age-bias-corrected Type Ia supernovae favor a logarithmic luminosity-distance relation
Hoang Ky Nguyen
Type Ia supernovae provide one of the principal observational probes of late-time cosmic acceleration. Recently, Son et al. [MNRAS 544, 975 (2025)] proposed that correlations betwe…
An intrinsic kinematic relation inferred from Type Ia supernovae
Hoang Ky Nguyen
Based on the Hubble diagram of SNeIa, we present empirical evidence for a kinematic relation between the speed of light and the late-time cosmic expansion rate. To infer this relat…
New analysis of SNeIa Pantheon Catalog: Variable speed of light as an alternative to dark energy
Hoang Ky Nguyen
In A&A 412, 35 (2003) Blanchard, Douspis, Rowan-Robinson, and Sarkar (BDRS) slightly modified the primordial fluctuation spectrum and produced an excellent fit to WMAP's CMB power…
Dilaton-induced variations in Planck constant and speed of light: An alternative to Dark Energy
Hoang Ky Nguyen
We reveal a novel aspect of scale-invariant actions that allow matter to couple with a dilaton field: The dynamics of the dilaton can induce variations in the Planck constant $…
A mechanism to generate varying speed of light via Higgs-dilaton coupling: Theory and cosmological applications
Hoang Ky Nguyen
We allow the Higgs field to interact with a dilaton field of the background spacetime via the coupling . Upon spontaneous gauge symmetry breaking, the Higg…
Time-reversed information flow through a wormhole in scalar-tensor gravity
Hoang Ky Nguyen, Francisco S. N. Lobo
This Letter aims to advance unexplored properties of a new class of Closed Timelike Curves recently discovered in scalar-tensor gravity, reported in Universe 9, 467 (2023) and Eur.…