440 citations · 5.2k across the 59 of their papers we have counts for
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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…
astro-ph2006★ 264 cited
N-flationary magnetic fields
Mohamed M. Anber, Lorenzo Sorbo
There is increasing interest in the role played by pseudo Nambu-Goldstone bosons (pNGBs) in the construction of string-inspired models of inflation. In these models the inflaton is…
astro-ph2004★ 24 cited
Observational Implications of Cosmological Event Horizons
Nemanja Kaloper, Matthew Kleban, Lorenzo Sorbo
In a universe dominated by a small cosmological constant or by eternal dark energy with equation of state w < -1/3, observers are surrounded by event horizons. The horizons limit h…