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Can slow roll inflation induce relevant helical magnetic fields?
Ruth Durrer, Lukas Hollenstein, Rajeev Kumar Jain
We study the generation of helical magnetic fields during single field inflation induced by an axial coupling of the electromagnetic field to the inflaton. During slow roll inflati…
Stability of the Einstein static universe in modified theories of gravity
Christian G. Boehmer, Lukas Hollenstein, Francisco S. N. Lobo +1
We present a brief overview of the stability analysis of the Einstein static universe in various modified theories of gravity, like f(R) gravity, Gauss-Bonnet or f(G) gravity, and…
Theoretical Priors On Modified Growth Parametrisations
Yong-Seon Song, Lukas Hollenstein, Gabriela Caldera-Cabral +1
Next generation surveys will observe the large-scale structure of the Universe with unprecedented accuracy. This will enable us to test the relationships between matter over-densit…