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gr-qc2026
Oscillatory dark energy with phantom crossings in Einstein-Gauss-Bonnet gravity
Saddam Hussain, Sandip Biswas
Recent baryon acoustic oscillation measurements from the Dark Energy Spectroscopic Instrument (DESI), combined with supernova observations, show a mild preference for an evolving d…
astro-ph.CO2026
Constant-Roll Inflation as a Competitive Alternative to Slow-Roll Inflation
Sandip Biswas, Rajib Saha, Kaushik Bhattacharya
Starting from the constant-roll condition, which involves the constant-roll parameter , which is a fundamental constant in the constant-roll inflationary models, we derive the s…