F2a: Support to PCCP

Check out the project news!


  • The Paris Centre for Cosmological Physics is a place of research, education and scientific exchanges in the field of cosmology, or more generally the physics of the Universe. It was created in February 2010 by George F. Smoot, when he was hired as professor of the University Paris-Diderot and he saw the opportunity to create a large Parisian centre dedicated to cosmology.

    Supported from the start by University Paris Diderot, CNRS/IN2P3 and the Paris Observatory, PCCP aims at developing a synergy between the Parisian laboratories (at present APC, LPNHE, LUTh, GEPI, LPTENS) to enhance the contribution of the French community to the rapidly developing field of cosmology.

    LabEx UnivEarthS contributes to the financing of some of the actions of PCCP such as the organization of workshops, visitors and postdoctoral programs, but also the training of high school teachers and the conception of a general public MOOC to share a scientific adventure on the frontiers of the knowledge.

    To go further, you can visit the official PCCP website : pariscosmo.fr

    WP leader Pierre BINETRUY, till 1 April 2017

    Stavros KATSANEVAS, Since 1 April 2017

    APC PR, Paris Diderot
    WP member George SMOOT APC Chair d’Excellence, SPC
    WP member Michel SPIRO APC Conseiller scientifique, CEA
    WP member Andrea TARTARI APC Postdoc Labex (F2) then Chair d’Excellence & RFPU
    WP member Valerie DOMCKE APC Postdoc, Labex
    WP member Dhiraj K. HAZRA APC Postdoc, Paris Diderot
    WP member Mauro PIERONI APC SPC fellowship
    WP member Ivan DEBONO APC Postdoc, EU Malte
    WP project manager Marie VERLEURE APC Paris Diderot




    The Paris Centre for Cosmological Physics is a place of research, education and scientific exchanges in the field of cosmology, or more generally the physics of the Universe. It was created in February 2010 by George F. Smoot. The LabEx UnivEarthS contributes to the financing of some of the actions of PCCP such as the organization of workshops, visitors and postdoctoral programs, but also the training of high school teachers and the realization of a general public MOOC to share a scientific adventure on the frontiers of the knowledge.



    MOOC Gravity. Starting in 2015, the PCCP realized the English version of the MOOC: Gravity! This was not just a translation but a whole new course adapted to the British platform Futurelearn, significantly different in spirit from the French platform.   It is considered among the most successful MOCC’s worldwide, since it currently counts close to 100.000 inscriptions.

    MOOC activities 2017. The 3rd instalment of MOOC Gravity on FUTURELEARN platform was webcast from 30/01/2017 to 12/03/2017. Attending results were even better than the two previous sessions. According to the different levels of involvement there were 7912 Joiners, 4031 (51%) Learners,   1195 (29,6%) Social learners (present on the forum) and 1089 (27%) finished the whole course.

    Teaching the Universe. The program “Teaching the Universe” is continuing as well. There was a new session on November 16-­‐18 2016.  A session of “Teaching the Universe” was planned to be implemented in the “Evgenides Planetarium”, the main planetarium of Athens Greece, co-funded by the Evgenides foundation and the Labex.

    PW@APC 2.0. A clear asset of the program teaching the Universe is the demonstration setup reproducing the Penzias & Wilson experiment. We therefore rethought the setup and initiated computer and electronic investment in this project along with Maison des Sciences de Puisaye. We have purchased new equipment.


     CMB detection workshop

    CMB detection workshop

    Map of cosmology concepts

    Map of cosmology concepts



    Scientific activity



    Postdocs and scientific activity. Our scientific activities in the field of cosmology and gravitation continued actively, with a significant contribution of our PCCP fellows. Among them, Valerie Domcke (recruited by UnivEarthS) was awarded on October 12 2016 one of the L’Oreal‐UNESCO fellowships for Women and Science. She was also offered a 5‐year position from the Theory Group of the DESY laboratory in Hamburg (an excellent position, especially for a young candidate), which she accepted.



    Art and Science


    Univers 2.0 PCCP, and in particular P. Binetruy, has obtained funding from the Foundation Carasso (40 KE) to initiate an exploration, through a cross-reflection between artists and scientists, of the field that opened through the discovery of gravitational waves putting again at the centre questions on the nature of the space and time, their texture, the notions of origin and horizon, the role of information circulating in the Universe and its conservation or loss, the role of the human as observer and/or perturbator, more generally the nature of our embedding in the cosmos.

    This reflection will be initially carried out within the multidisciplinary team set up including very well-known artists internationally (Gorka Alda, Bertrand Lamarche, Liliane Lijn, Thomas Saraceno, Raymond Galle, Raphael Dallaporta). Philosophers also participate in the discussion (Heinz Wismann, Céline Flécheux). The work program includes for the time being artists residencies, workshops. On the scientist side, there were essentially some of the PCCP scientists and Marc Lachièze Ray.

    The project will culminate in two years with a restitution seminar, accompanied by an exhibition and a publication.





    A Soliton Solution for the Central Dark Masses in Globular Clusters and Implications for the Axiverse

    Razieh Emami, Tom Broadhurst, George Smoot, Tzihong Chiueh, Luu Hoang Nhan

    12 Juin 2018

    arXiv:1806.04518 [astro-ph.CO]



    Characteristics and energy dependence of recurrent galactic cosmic-ray flux depressions and of a Forbush decrease with LISA Pathfinder

    Armano, H. Audley, J. Baird, M. Bassan, S. Benella, P. Binetruy, M. Born, D. Bortoluzzi, A. Cavalleri, A. Cesarini, A. M. Cruise, K. Danzmann, M. de Deus Silva, I. Diepholz, G. Dixon, R. Dolesi, M. Fabi, L. Ferraioli, V. Ferroni, N. Finetti, E. D. Fitzsimons, M. Freschi, L. Gesa, F. Gibert, D. Giardini, R. Giusteri, C. Grimani, J. Grzymisch, I. Harrison, G. Heinzel, M. Hewitson, D. Hollington, D. Hoyland, M. Hueller, H. Inchauspé, O. Jennrich, P. Jetzer, N. Karnesis, B. Kaune, N. Korsakova, C. J. Killow, M. Laurenza, J. A. Lobo, I. Lloro, L. Liu, J. P. López-Zaragoza, R. Maarschalkerweerd, D. Mance, V. Martín, L. Martin-Polo, J. Martino, F. Martin-Porqueras, I. Mateos, P. W. McNamara, J. Mendes, L. Mendes, M. Nofrarias, S. Paczkowski, M. Perreur-Lloyd, A. Petiteau, P. Pivato, et al. (24 additional authors not shown)

    23 avril 2018

    arXiv:1802.09374 [physics.space-ph]



    Measuring the Galactic Cosmic Ray Flux with the LISA Pathfinder Radiation Monitor

    M Armano, H Audley, J Baird, P Binetruy, M Born, D Bortoluzzi, E Castelli, A Cavalleri, A Cesarini, M Cruise, K Danzmann, M de Deus Silva, I Diepholz, G Dixon, R Dolesi, L Ferraioli, V Ferroni, N Finetti, E D Fitzsimons, M Freschi, L Gesa, F Gibert, D Giardini, R Giusteri, C Grimani, J Grzymisch, I Harrison, G Heinzel, M Hewitson, D Hollington, D Hoyland, M Hueller, H Inchauspe, O Jennrich, P Jetzer, N Karnesis, B Kaune, N Korsakova, C J Killow, J A Lobo, I Lloro, L Liu, J P Lopez-Zaragoza, R Maarschalkerweerd, D Mance, N Meshskar, V Martin, L Martin-Polo, J Martino, F Martin-Porqueras, I Mateos, P W McNamara, J Mendes, L Mendes, M Nofrarias, S Paczkowski, M Perreur-Lloyd, A Petiteau, P Pivato, E Plagnol, J Ramos-Castro, J Reiche, D I Robertson, F Rivas, G Russano, J Slutsky, C F Sopuerta, et al. (12 additional authors not shown)

    12 janvier 2018

    arXiv:1711.07427 [astro-ph.IM]



    Evidence of Neutrino Enhanced Clustering in a Complete Sample of Sloan Survey Clusters,


    Razieh Emami, Tom Broadhurst, Pablo Jimeno, George Smoot, Raul Angulo, Jeremy Lim, Ming Chung Chu, Ruth Lazkoz

    18 Novembre 2017

    arXiv:1711.05210v2 [astro-ph.CO]


    Probing features in the primordial perturbation spectrum with large-scale structure data

    Benjamin L’Huillier (KASI), Arman Shafieloo (KASI), Dhiraj Kumar Hazra, George F. Smoot, Alexei A. Starobinsky

    30 Octobre 2017

    arXiv:1710.10987 (astro-ph.CO)


    Probing features in inflaton potential and reionization history with future CMB space observations

    Dhiraj Kumar Hazra, Daniela Paoletti,Mario Ballardini, Fabio Finelli, Arman Shafieloo, George F. Smoot, Alexei A. Starobinsky. Oct.3, 2017

    https://arXiv:1710.01205v1 [astro-ph.CO]


    Observational Constraints on the Primordial Curvature Power Spectrum

    Razieh Emami and George F. Smoot.

    September 26, 2017.

    https://arXiv:1705.09924v2 [astro-ph.CO]


    Neutrino masses, leptogenesis and dark matter From small lepton number violation?

    Asmaa Abada, Giorgio Arcadi, Valerie Domcke and Michele Lucente.

    September 5, 2017

    https://arXiv:1709.00415v1 [hep-ph]


    Witnessing the reionization history using Cosmic Microwave Background observation from Planck

    Dhiraj Kumar Hazra, George F. Smoot.

    August 16, 2017

    https://arXiv:1708.04913v1 [astro-ph.CO]


    PBH dark matter from axion inflation
    Valerie Domcke (APC, Paris), Francesco Muia (Paris Cent. Cosmol. Phys.), Mauro Pieroni, Lukas T. Witkowski (APC, Paris).

    Apr 11, 2017.

    https://arXiv:1704.03464v2 [astro-ph.CO]


    Universality in generalized models of inflation

    Pierre Binétruy, Joel Mabillard, Mauro Pieroni.

    April 6, 2017.

    https://arXiv:1611.07019v2 [gr-qc]


    Detection prospects for the Cosmic Neutrino Background using laser interferometers

    Valerie Domcke, Martin Spinrath

    April 11, 2017

    https://arxiv.org/abs/1703.08629 [astro-ph.CO]


    A Unified Model of D-Term Inflation

    Valerie Domcke and Kai Schmitz

    February 9, 2017

    https://arxiv.org/pdf/1702.02173 [hep-ph]


    Metastable Dark Energy with Radioactive-like Decay

    Date of publication: 2016-10-17

    Authors: Arman Shafieloo, Dhiraj Kumar Hazra, Varun Sahni, Alexei A. Starobinsky

    arxiv.org/abs/1610.05192  [astro-ph.CO]

    Consistency of the Planck CMB data and ΛCDM cosmology

    Date of publication: 2016-10-24

    Authors: Arman Shafieloo, Dhiraj Kumar Hazra

    arxiv.org/abs/1609.09781 [gr-qc]


    General Relativity and Cosmology: Unsolved Questions and Future Directions

    Ivan Debono, George F. Smoot

    Sept. 2016, Journal-ref: Universe. 2016; 2(4):23

    e-print : arXiv:1609.09781 [astro-ph.CO]


    A Brief History of Gravitational Waves

    Jorge L. Cervantes-Cota, Salvador Galindo-Uribarri, George F. Smoot

    Sept. 2016, Journal-ref: Universe 2016, 2(3), 22

    e-print : arXiv:1609.09400 [astro-ph.HE]


    Direct search for features in the primordial bispectrum

    Stephen Applebya , Jinn-Ouk Gongb, Dhiraj Kumar Hazrab, Arman Shafielooe, Spyros Sypsasb

    July 2016, ScienceDirect – Physics Letters B


    A simple model for the evolution of a non-Abelian cosmic string network

    G. Cella (INFN, Pisa), M. Pieroni (APC, Paris & Paris Cent. Cosmol. Phys.)

    June 16, 2016 – 13 pages

    e-Print: arXiv:1512.02117 [astro-ph.CO]


    Primordial features and Planck polarization

    Dhiraj Kumar Hazra (APC, Paris), Arman Shafieloo (KAIST, Taejon), George F. Smoot (APC, Paris & Paris U., IV & Hong Kong U. Sci. Tech. & UC, Berkeley & LBNL, Berkeley), Alexei A. Starobinsky (Kazan State U. & Landau Inst.).

    May 6, 2016. 22 pp.
    e-Print: arXiv:1605.02106 [astro-ph.CO]

    Cella (INFN, Pisa), M. Pieroni (APC, Paris & Paris Cent. Cosmol. Phys.). June 16, 2016 – 13 pages. A simple model for the evolution of a non-Abelian cosmic string network.e-Print: arXiv:1512.02117 [astro-ph.CO]


    Valerie Domcke, Mauro Pieroni, Pierre Binétruy. Mar 3, 2016 Primordial gravitational waves for universality classes of pseudoscalar inflation. e-Print: arXiv:1603.01287 [astro-ph.CO]


    Stephen Appleby, Jinn-Ouk Gong, Dhiraj Kumar Hazra, Arman Shafieloo, Spyros Sypsas. December 30, 2015. Direct search for features in the primordial bispectrum e-print : http://arxiv.org/abs/1512.08977 [astro-ph.CO]


    Tartari, B. Bélier, N. Bleurvacq, M. Calvo, D. Cammilleri, T. Decourcelle, A. Monfardini, I. Moric, M. Piat, D. Prêle, G. F. Smoot. December 29, 2015. LEKIDs as mm-Wave Polarisation Analysers: Fabrication, Test Bench and Early Results e-print : http://link.springer.com/article/10.1007/s10909-015-1421-8


    Tartari, J. Aumont, S. Banfi, P. Battaglia, E. S. Battistelli, A. Baù, B. Bélier, D. Bennett, L. Bergé, Affiliated with CSNSM, Univ Paris-Sud, CNRS/IN2P3 and 67 more. December 28, 2015. QUBIC: A Fizeau Interferometer Targeting Primordial B-Modes e-print : http://link.springer.com/article/10.1007/s10909-015-1398-3


    G.Cella, M. Pieroni. Dec 7, 2015. A simple model for the evolution of a non-Abelian cosmic string network. e-Print: arXiv:1512.02117 [astro-ph.CO]


    Mauro Pieroni. Oct 12, 2015. βfunction formalism for inflationary models with a non minimal coupling with gravity. e-Print: arXiv:1510.03691 [hep-ph]


    Wenbin Lu, Pawan Kumar, George F. Smoot. Jan 29, 2015 – 13 pages. Probing Massive Stars Around Gamma-Ray Burst Progenitors. e-Print: arXiv:1501.07606 [astro-ph.HE]


    George F. Smoot, Ivan Debono. Jul 14, 2014. 27 pp. 21-cm Intensity Mapping with FAST. e-Print: arXiv:1407.3583 [astro-ph.CO]


    Binetruy, E. Kiritsis, J. Mabillard, M. Pieroni, C. Rosset. July 3 2014. Universality classes for models of inflation

    e-Print: arXiv:1407.0820 [astro-ph.CO]


    Pierre Binétruy, Alexis Helou. June 6 2014. The Apparent Universe. e-Print : arXiv:1406.1658 [gr-qc]


    George F. Smoot. May 12, 2014. See Saw Inflation / Dark Matter / Dark Energy / Baryogenesis. e-Print: arXiv:1405.2776 [astro-ph.CO]


    Dhiraj Kumar Hazra, Arman Shafieloo, George F. Smoot, Alexei A. Starobinsky. May 8, 2014. Wiggly Whipped Inflation. e-Print: arXiv:1405.2012 [astro-ph.CO]


    Healthy theories beyond Horndeski

    Jérôme Gleyzes (IPhT, Saclay & U. Paris-Sud 11, Dept. Phys., Orsay), David Langlois, Federico Piazza (APC, Paris & Paris Cent. Cosmol. Phys.), Filippo Vernizzi (IPhT, Saclay). Apr 25, 2014. Healthy theories beyond Horndeski. e-Print: arXiv:1404.6495 [hep-th]


    Pawan Kumar, George F. Smoot. Feb 11, 2014. Some Implications of inverse-Compton Scattering of Hot Cocoon Radiation by relativistic jets in Gamma-Ray Bursts. e-Print: arXiv:1402.2656 [astro-ph.HE]


    A mm-Wave Polarisation Analyser Using LEKIDs: Strategy and Preliminary Numerical Results

    Tartari, A.; Belier, B.; Calvo, M.; Cammilleri, V. D.; Monfardini, A.; Piat, M.; Prêle, D.; Smoot, G. F.. January 29, 2014. A mm-Wave Polarisation Analyser Using LEKIDs: Strategy and Preliminary Numerical Results

    . http://link.springer.com/article/10.1007/s10909-013-1055-7


    Federico Piazza (APC, Paris & Paris Cent. Cosmol. Phys.), Heinrich Steigerwald (Marseille, CPT & Toulon U.), Christian Marinoni (Marseille, CPT & Toulon U. & Inst. U. de France). Dec 20, 2013. Phenomenology of dark energy: exploring the space of theories with future redshift surveys. e-Print: arXiv:1312.6111 [astro-ph.CO]


    QUBIC Collaboration (A. Ghribi (APC, Paris) , J. Aumont (Orsay, IAS) , E.S. Battistelli (Rome U.) , A. Bau (Milan U.) , L. Berge (CSNSM, Orsay) , J-Ph. Bernard (IRAP, Toulouse) , M. Bersanelli (Milan U.) , M-A. Bigot-Sazy, G. Bordier (APC, Paris) , E.T. Bunn (Richmond U.) , F. Cavaliere (Milan U.) , P. Chanial (APC, Paris) , A. Coppolecchia (Rome U.) , T. Decourcelle (APC, Paris) , P. De Bernardis, M. De Petris (Rome U.) , A-A. Drilien, L. Dumoulin (CSNSM, Orsay) , M.C. Falvella (ASDC, Frascati) , A. Gault (Wisconsin U., Madison) , M. Gervasi (Milan U.) , M. Giard (IRAP, Toulouse) , M. Gradziel (NUIM, Maynooth) , L. Grandsire (APC, Paris) , D. Gayer (NUIM, Maynooth) , J-Ch. Hamilton (APC, Paris) , V. Haynes (Manchester U.) , Y-G. Hiraut (APC, Paris) , N. Holtzer (CSNSM, Orsay) , J. Kaplan (APC, Paris) , A. Korotkov (Brown U.) , J. Lande (IRAP, Toulouse) , A. Lowitz (Wisconsin U., Madison) , B. Maffei (Manchester U.) , S. Marnieros (CSNSM, Orsay) , J. Martino (Orsay, IAS) , S. Masi (Rome U.) , A. Mennella (Milan U.) , L. Montier (IRAP, Toulouse) , A. Murphy (NUIM, Maynooth) , M.W. Ng (Manchester U.) , E. Olivieri (CSNSM, Orsay) , F. Pajot (Orsay, IAS) , A. Passerini (Milan U.) , F. Piacentini (Rome U.) , M. Piat (APC, Paris) , L. Piccirillo, G. Pisano (Manchester U.) , D. Prele (APC, Paris) , D. Rambaud (IRAP, Toulouse) , O. Rigaut (CSNSM, Orsay) , C. Rosset (APC, Paris) , M. Salatino, A. Schillaci (Rome U.) , S. Scully, C. O’Sullivan (NUIM, Maynooth) , A. Tartari (APC, Paris) , P. Timbie (Wisconsin U., Madison) , G. Tucker (Brown U.) , L. Vibert (Orsay, IAS) , F. Voisin (APC, Paris) , B. Watson (Manchester U.) , M. Zannoni (Milan U.)

    Jul 22, 2013 – Latest Progress on the QUBIC Instrument, e-Print: arXiv:1307.5701 [astro-ph.IM] | PDF