353 citations · 3.1k across the 71 of their papers we have counts for
5 papers · 1 filter
Cosmological constant, violation of cosmological isotropy and CMB
Federico R. Urban, Ariel R. Zhitnitsky
We suggest that the solution to the cosmological vacuum energy puzzle does not require any new field beyond the standard model, but rather can be explained as a result of the inter…
The cosmological constant from the ghost. A toy model
Federico R. Urban, Ariel R. Zhitnitsky
We suggest that the solution to the cosmological vacuum energy puzzle is linked to the infrared sector of the effective theory of gravity interacting with standard model fields. We…
The cosmological constant from the QCD Veneziano ghost
Federico R. Urban, Ariel R. Zhitnitsky
We suggest that the solution to the cosmological vacuum energy puzzle is linked to the infrared sector of the effective theory of gravity interacting with standard model fields, wi…
The cosmological constant as a manifestation of the conformal anomaly?
Evan C. Thomas, Federico R. Urban, Ariel R. Zhitnitsky
We propose that the solution to the cosmological vacuum energy puzzle may come from the infrared sector of the effective theory of gravity, where the impact of the trace anomaly is…
Axion braneworld cosmology
Cosimo Bambi, Masahiro Kawasaki, Federico R. Urban
We study axion cosmology in a 5D Universe, in the case of flat and warped extra dimension. The comparison between theoretical predictions and observations constrains the 5D axion d…