3 papers
astro-ph.CO2026
Anisotropic Dirac-Born-Infeld Inflation with Non-Vacuum Initial States: Primordial Perturbations, Non-Gaussianity, and Observational Constraints
Narges Rashidi, Maryam Roushan
We investigate linear and nonlinear primordial perturbations in an anisotropic Dirac-Born-Infeld (DBI) inflationary model with a non-vacuum initial state. Using the Arnowitt-Deser-…
gr-qc2025
Cosmological Implications of the Extended Uncertainty Principle: Energy Conditions, Stability, and Late Time Acceleration
Maryam Roushan, Narges Rashidi
We study the cosmological consequences of the Extended Uncertainty Principle (EUP) by deriving modified Friedmann equations through thermodynamic arguments. The evolution of the ef…
astro-ph.CO2025
Observational Viability of Anisotropic Inflation Revisited
Maryam Roushan, Narges Rashidi, Kourosh Nozari
We investigate anisotropic inflation within the single-field model featuring an intermediate scale factor. Our analysis reveals that the anisotropic nature of the Friedmann equatio…