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26 papers · 2 filters
Constraining interacting dark energy models with the halo concentration-mass relation
Yu Zhao, Yun Liu, Shihong Liao +3
The interacting dark energy (IDE) model is a promising alternative cosmological model which has the potential to solve the fine-tuning and coincidence problems by considering the i…
Palatini formulation for gauge theory: implications for slow-roll inflation
Syksy Rasanen, Yosef Verbin
We consider a formulation of gauge field theory where the gauge field and the field strength are independent variables, as in the Palatini formulation of gravity. Fo…
Multi-messenger constraints on Abelian-Higgs cosmic string networks
Mark Hindmarsh, Jun'ya Kume
Nielsen-Olesen vortices in the Abelian-Higgs (AH) model are the simplest realisations of cosmic strings in a gauge field theory. Large-scale numerical solutions show that the domin…
Reconstructing physical parameters from template gravitational wave spectra at LISA: first order phase transitions
Chloe Gowling, Mark Hindmarsh, Deanna C. Hooper +1
A gravitational wave background from a first order phase transition in the early universe may be observable at millihertz gravitational wave (GW) detectors such as the Laser Interf…
BeyondPlanck IV. On end-to-end simulations in CMB analysis -- Bayesian versus frequentist statistics
M. Brilenkov, K. S. F. Fornazier, L. T. Hergt +48
End-to-end simulations play a key role in the analysis of any high-sensitivity CMB experiment, providing high-fidelity systematic error propagation capabilities unmatched by any ot…
BeyondPlanck X. Planck LFI frequency maps with sample-based error propagation
A. Basyrov, A. -S. Suur-Uski, L. P. L. Colombo +37
We present Planck LFI frequency sky maps derived within the BeyondPlanck framework. This framework draws samples from a global posterior distribution that includes instrumental, as…