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astro-ph2007★ 61 cited
Non-isotropy in the CMB power spectrum in single field inflation
John F. Donoghue, Koushik Dutta, Andreas Ross
Contaldi et al. [1] have suggested that an initial period of kinetic energy domination in single field inflation may explain the lack of CMB power at large angular scales. We note…
astro-ph2007★ 36 cited
Confronting pNGB quintessence with data
Koushik Dutta, Lorenzo Sorbo
We analyze the observational constraints on the model where a pseudo-Nambu-Goldstone boson (pNGB) plays the role of dark energy. The constraints are derived by using the latest Gol…