no code implementations • 22 Dec 2020 • Thejs Brinckmann, Jae Hyeok Chang, Marilena LoVerde
Specifically, we study cases in which: all neutrino states self-interact and N$_{\textrm{eff}}$ varies; two species free-stream, which we show alleviates tension with laboratory constraints, while the energy in the additional interacting states varies; and a variable fraction of neutrinos self-interact with either the total N$_{\textrm{eff}}$ fixed to the Standard Model value or allowed to vary.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
no code implementations • 24 Sep 2019 • Alek Bedroya, Robert Brandenberger, Marilena LoVerde, Cumrun Vafa
We study the implications of the recently proposed Trans-Planckian Censorship Conjecture (TCC) for early universe cosmology and in particular inflationary cosmology.
High Energy Physics - Theory Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
no code implementations • 30 Sep 2008 • Marilena LoVerde, Niayesh Afshordi
This correction can be especially useful for narrow redshift bins, or samples with small redshift overlap, for which the zeroth order Limber formula has a large error.
astro-ph
no code implementations • 16 Nov 2006 • Marilena LoVerde, Lam Hui, Enrique Gaztanaga
While the lensing modulation opens up an interesting high z window for ISW measurements, high z measurements are not expected to add much new information to low z ones if dark energy is the cosmological constant.
