4 papers
Calibration of CMB Polarisation Using Cross-Experiment Correlations
Claire Rigouzzo, Eugene Lim, Susanna Azzoni +1
Parity-violating physics in the Universe can generate correlations between the Cosmic Microwave Background (CMB) - and -modes, but detecting such signals requires extremely a…
Polarisation Singularities of Gravitational Waves
Claire Rigouzzo, Sebastian Golat, Alex J. Vernon +3
Departure from idealised plane waves gives rise to intricate geometric structures in wave fields. One such structure is the polarisation singularity, which emerges when multiple mo…
On Non-Minimal Couplings to Gravity and Axion Isocurvature Bounds
Claire Rigouzzo, Sebastian Zell
For axions present during inflation, it has been shown that a non-minimal coupling of the inflaton to gravity worsens isocurvature bounds, while a non-minimal coupling $ξ_…
No Dark Matter Axion During Minimal Higgs Inflation
Claire Rigouzzo, Sebastian Zell
We study minimal versions of Higgs inflation in the presence of a massless QCD axion. While the inflationary energy scale of the metric variant is too high to accommodate isocurvat…