Delabrouille, Jacques Abitbol, Maximilian H. Aghanim, Nabila Ali-Haimoud, Yacine Alonso, David Alvarez, Marcelo Banday, Anthony J. Bartlett, James G. Baselmans, Jochem Basu, Kaustuv
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This paper discusses the science case for a sensitive spectro-polarimetric survey of the microwave sky. Such a survey would provide a tomographic and dynamic census of the three-dimensional distribution of hot gas, velocity flows, early metals, dust, and mass distribution in the entire Hubble volume, exploit CMB temperature and polarisation anisotr...

Alvarez, Marcelo Artis, Emmanuel Ashton, Peter Aumont, Jonathan Aurlien, Ragnhild Banerji, Ranajoy Belen Barreiro, R. Bartlett, James G. Basak, Soumen Battaglia, Nick
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The Probe of Inflation and Cosmic Origins (PICO) is a proposed probe-scale space mission consisting of an imaging polarimeter operating in frequency bands between 20 and 800 GHz. We describe the science achievable by PICO, which has sensitivity equivalent to more than 3300 Planck missions, the technical implementation, the schedule and cost.

zhu, yi gong, yungui

Bonnet coupling seems a way out of the swampland issue for single-field inflationary models.

Schlegel, David J. Kollmeier, Juna A. Aldering, Greg Bailey, Stephen Baltay, Charles Bebek, Christopher Benzvi, Segev Besuner, Robert Blanc, Guillermo Bolton, Adam S.
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MegaMapper is a proposed ground-based experiment to measure Inflation parameters and Dark Energy from galaxy redshifts at 2

Garcia-Saenz, Sebastian Pinol, Lucas Renaux-Petel, Sébastien

Recent studies of inflation with multiple scalar fields have highlighted the importance of non-canonical kinetic terms in novel types of inflationary solutions. This motivates a thorough analysis of non-Gaussianities in this context, which we revisit here by studying the primordial bispectrum in a general two-field model. Our main result is the com...

Benakli, Karim Chen, Yifan Cheng, Peng Lafforgue-Marmet, Gaëtan

Stochastic gravitational waves can be produced during the preheating when out-of-equilibrium particles are produced with an anisotropic stress-tensor. We discuss the case where these particles carry spin-3/2. We compute the spectrum of the gravitational waves generated by the transverse and longitudinal components. We find a different scaling of th...

gupta, rajendra p.

3.3 c 0 / H 0 , where z is the redshift, c 0 is the current speed of light, and H 0 is the Hubble constant.

Brax, Philippe Valageas, Patrick

We propose a simple model that provides a dynamical cancellation mechanism of the vacuum energy density appearing either in the form of a bare cosmological constant, quantum fluctuations of matter fields or the result of phase transitions. This `conformal compensator model' is based on a conformal coupling $A(\varphi)$ between the Einstein and the ...

biagetti, matteo

The understanding of the primordial mechanism that seeded the cosmic structures we observe today in the sky is one of the major goals in cosmology. The leading paradigm for such a mechanism is provided by the inflationary scenario, a period of violent accelerated expansion in the very early stages of evolution of the universe. While our current kno...

gerhardt, claus

We applied quantum gravitational results to spatially unbounded Friedmann universes and tried to answer some questions related to dark energy, dark matter, inflation, and the missing antimatter.