2 papers
hep-ph2026
Inflation from a Weyl-flat null origin
Malaika Arshad, Jehanzad Zafar, Ahdab Althukair +1
We show that a Weyl-flat null origin of inflation need not be in tension with present observations. For canonical single-field inflation, any background with $ε(N)\to ε_\infty\in(0…
hep-ph2026
Dilaton-Induced Resonant Production of Ultralight Vector Dark Matter
Imtiaz Khan, G. Mustafa, Jehanzad Zafar +3
A dilatonic half-mass resonance can produce ultralight vector dark matter only if the Floquet instability becomes efficient before the oscillating spectator scalar dominates the co…