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We derive the power spectrum of primordial quantum fluctuations in an inflationary universe for curvature parameter $${\mathcal {K}}=1$$ K = 1 . This is achieved through a Born–Oppenheimer type of… Click to show full abstract
We derive the power spectrum of primordial quantum fluctuations in an inflationary universe for curvature parameter $${\mathcal {K}}=1$$ K = 1 . This is achieved through a Born–Oppenheimer type of approximation scheme from the Wheeler–DeWitt equation of canonical quantum gravity using gauge-invariant variables. Compared to the flat model, the closed model exhibits a deficit of power at large scales.
Keywords:
power spectrum;
model closed;
spectrum perturbations;
model;
power
Journal Title: General Relativity and Gravitation
Year Published: 2022
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Journal Title: General Relativity and Gravitation
Year Published: 2022
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!