# Centre de Physique Théorique

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# Cosmology

###### Group “Fundamental Interactions”

The Cosmology Team is comprised of researchers having an expertise in Cosmology, General Relativity, Quantum Field Theory and Particle Physics who collaborate and share contracts with several national and international groups of theoreticians, cosmologists, astronomers, astrophysicists and particle physicists.

Context of our researches. Flooded for over a decade with a massive quantity of high quality data, cosmology has finally become a fertile domain of research, the ideal ground where predictions from fundamental physics, particle physics and general relativity can be tested and falsified. This abundance of information has recently led to the discovery of phenomena and physical signals that were completely unexpected, such as the accelerated expansion of the universe, as well as phenomena that were expected since long, but undetected so far, such as gravitational waves.

The core of our activities is oriented along three main research axes:

• Understanding the physics of the large scale structure of the universe by studying how the structures grow in different regimes using statistical tools. We want to gauge the contribution of the different forms of matter (standard and dark) and we aim at extracting the values of fundamental observables of the standard model of cosmology.
• Unveiling the nature of dark energy by studying the rich phenomenology of the acceleration of the universe. The goal is to refine our knowledge of the dark sector of the universe either empirically, by exploring whether the standard description of gravity, the general theory of relativity, fails on large (infrared) cosmic scales, either theoretically, by exploring which non-standard model of gravity might generalize the current paradigm.
• Assessing the consistency of the physical foundations of the model of cosmology by challenging fundamental assumptions adopted in cosmological inferences, in order to secure the conceptual basis of the paradigm used in interpreting cosmological observations.

### Directory of Members

 BARATTA Philippe PhD candidate Email Bel Julien University faculty +33.4.91.26.95.05 Email Fernandez-Cid Adrian PhD candidate Email Kuntz Adrien PhD candidate Email Marinoni Christian University faculty Chef de l’équipe « Cosmologie » +33.4.91.26.95.35 Email Pèrenon Louis PhD candidate Email Piazza Federico University faculty +33.4.91.26.95.04 Email Schücker Thomas University faculty Chef du Groupe « Interactions fondamentales » +33.4.91.26.95.61 Email Taxil Pierre University faculty +33.4.91.26.95.48 Email Virey Jean-Marc University faculty +33.4.91.26.95.48 Email

### List of Publications

51 results
Journal article
Alberto Nicolis, Riccardo Penco, Federico Piazza, Riccardo Rattazzi
Zoology of condensed matter: framids, ordinary stuff, extra-ordinary stuff
Journal of High Energy Physics, Springer Verlag (Germany), 2015, 2015 (6), pp.155. 〈10.1007/JHEP06(2015)155〉
Journal article
Jérôme Gleyzes, David Langlois, Federico Piazza, Filippo Vernizzi
New Class of Consistent Scalar-Tensor Theories
Physical Review Letters, American Physical Society, 2015, 114 (21), pp.211101. 〈10.1103/PhysRevLett.114.211101〉
Journal article
Jérôme Gleyzes, David Langlois, Federico Piazza, Filippo Vernizzi
Exploring gravitational theories beyond Horndeski
Journal of Cosmology and Astroparticle Physics, Institute of Physics (IOP), 2015, 2015 (02), pp.018. 〈10.1088/1475-7516/2015/02/018〉
Journal article
Jose Beltrán Jiménez, Lavinia Heisenberg, Gonzalo Olmo, Christophe Ringeval
Cascading dust inflation in Born-Infeld gravity
Journal of Cosmology and Astroparticle Physics, Institute of Physics (IOP), 2015, 2015 (11), pp.046. 〈10.1088/1475-7516/2015/11/046〉
Journal article
H. Velten, H. A. Borges, S. Carneiro, R. Fazolo, S. Gomes
Large-scale structure and integrated Sachs–Wolfe effect in decaying vacuum cosmology
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2015, 452 (2), pp.2220-2224. 〈10.1093/mnras/stv1443〉
Journal article
Kai Hoffmann, Julien Bel, Enrique Gaztanaga, Martin Crocce, Pablo Fosalba, Francisco J. Castander
Measuring the growth of matter fluctuations with third-order galaxy correlations
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2015, MNRAS, 4471 (2), pp.1724
Journal article
Jose Beltran Jimenez, Vincenzo Salzano, Ruth Lazkoz
Anisotropic expansion and SNIa: an open issue
Physics Letters, Elsevier, 2015, 741, pp.168
Journal article
Ismael Ayuso, Jose Beltran Jimenez, Alvaro de La Cruz Dombriz
On the consistency of universally non-minimally coupled $f(R,T,R_{\mu\nu}T^{\mu\nu})$ theories
Physical Review D, American Physical Society, 2015, 91 (10), pp.104003 〈10.1103/PhysRevD.91.104003〉
Journal article
A. M. Oliveira, Hermano Velten, J. C. Fabris, L. Casarini
Neutron Stars in Rastall Gravity
Physical Review D, American Physical Society, 2015, 92 (4), pp.044020 〈10.1103/PhysRevD.92.044020〉
Journal article
Rodolfo C. De Freitas, Hermano Velten
Non-linear clustering during the BEC dark matter phase transition
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2015, 75 (12), pp.597. 〈10.1140/epjc/s10052-015-3828-4〉
51 results

February 2018 :