F2a : Support au PCCP

Consultez les actualités du projet!

 

  • Le Centre de Cosmologie Physique de Paris est un lieu de recherche, d’éducation et d’échanges scientifiques dans le domaine de la cosmologie et plus généralement la physique de l’Univers. Il a été créé en février 2010 par George F. Smoot, prix Nobel de Physique 2006, lors de son recrutement comme professeur de l’Université Paris-Diderot, qui a voulu créer un grand centre parisien dédié à la cosmologie.

    Avec le support de l’université Paris-Diderot, du CNRS/IN2P3 et de l’Observatoire de Paris, le PCCP a pour objectif de favoriser les synergies entre les laboratoires parisiens (actuellement APC, LPNHE, LUTh, GEPI, LPTENS) pour développer la contribution de la communauté scientifique française dans le domaine en plein essor de la cosmologie.

    Le LabEx UnivEarthS contribue au financement de certaines des actions du PCCP telles que l’organisation de workshops, l’accueil de chercheurs et de postdoctorants, mais aussi la formation des enseignants des lycées et collèges et la création d’un MOOC Grand Public pour partager une aventure scientifique aux frontières de la connaissance.

    • Pierre Binétruy (PR, Paris Diderot)
    • George F. Smoot (Chaire d’Excellence SPC)
    • Michel Spiro (Conseiller Scientifique, CEA)
    • Elias Kiritsis (Chercheur, CNRS, ERC)
    • Valerie Domcke (Postdoc, Labex UnivEarthS & PCCP)
    • Andrea Tartari (Postdoc LabEx F2 & Chaire Excellence)
    • Dhiraj Kumar Hazra (Postdoc, Paris Diderot Chaire d’Excellence)
    • Ivan Debono (Postdoc, UE Malte)
    • Mauro Pieroni (Doctorant, SPC fellowship)
    • Marie Verleure (Chef de Projet, Paris Diderot)

    pccp2016-light

  • Outreach

    • Enseigner l’Univers : Sessions annuelles de 3 jours de formation des professeurs des collèges et lycées
    • MOOC Grand Public : (Massive Open Online Course) Gravité ! Du Big Bang aux trous noirs

    Activités scientifiques

    • Workshops
    • Conférences

    Financements

    • Accueil de chercheurs & stagiaires
    • Postdoctorants

    Atelier détecteur de CMB

    Carte des concepts de la cosmologie

  • Voir le site du PCCP : pariscosmo.fr

  • PCCP PUBLICATIONS LIST: LabEx UnivEarthS WPF2A

    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]

    Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves

    Nicola Bartolo, Chiara Caprini, Valerie Domcke, Daniel G. Figueroa, Juan Garcia-Bellido, Maria Chiara Guzzetti, Michele Liguori, Sabino Matarrese, Marco Peloso, Antoine Petiteau, Angelo Ricciardone, Mairi Sakellariadou, Lorenzo Sorbo, Gianmassimo Tasinato

    (Submitted on 20 Oct 2016 (v1), last revised 25 Dec 2016 (this version, v2))

    We investigate the potential for the LISA space-based interferometer to detect the stochastic gravitational wave background produced from different mechanisms during inflation. Focusing on well-motivated scenarios, we study the resulting contributions from particle production during inflation, inflationary spectator fields with varying speed of sound, effective field theories of inflation with specific patterns of symmetry breaking and models leading to the formation of primordial black holes. The projected sensitivities of LISA are used in a model-independent way for various detector designs and configurations. We demonstrate that LISA is able to probe these well-motivated inflationary scenarios beyond the irreducible vacuum tensor modes expected from any inflationary background.

    https://arxiv.org/abs/1610.06481

     

    Supergravity Contributions to Inflation in models with non-minimal coupling to gravity

    Kumar Das, Valerie Domcke, Koushik Dutta

    (Submitted on 21 Dec 2016)

    This paper provides a systematic study of supergravity contributions relevant for inflationary model building in Jordan frame supergravity. In this framework, canonical kinetic terms in the Jordan frame result in the separation of the Jordan frame scalar potential into a tree-level term and a supergravity contribution, which is potentially dangerous for sustaining inflation. We show that if the vacuum energy necessary for driving inflation originates dominantly from the F-term of an auxiliary field (i.e. not the inflaton), the supergravity corrections to the Jordan frame scalar potential are generically suppressed. Moreover, these supergravity contributions identically vanish if the superpotential W vanishes along the inflationary trajectory. On the other hand, if the F-term associated with the inflaton dominates the vacuum energy, the supergravity contributions are generically comparable to the globally supersymmetric contributions. In addition, the non-minimal coupling to gravity inherent to Jordan frame supergravity significantly impacts the inflationary model depending on the size and sign of this coupling. We discuss the phenomenology of some representative inflationary models, and point out the relation to the recently much discussed cosmological `attractor’ models.

    https://arxiv.org/abs/1612.07075

 

A Unified Model of D-Term Inflation

Valerie Domcke, Kai Schmitz

(Submitted on 7 Feb 2017)

Hybrid inflation, driven by a Fayet-Iliopoulos (FI) D term, is an intriguing inflationary model. In its usual formulation, it however suffers from several shortcomings. These pertain to the origin of the FI mass scale, the stability of scalar fields during inflation, gravitational corrections in supergravity, as well as to the latest constraints from the cosmic microwave background. We demonstrate that these issues can be remedied if D-term inflation is realized in the context of strongly coupled supersymmetric gauge theories. We suppose that the D term is generated in consequence of dynamical supersymmetry breaking. Moreover, we assume canonical kinetic terms in the Jordan frame as well as an approximate shift symmetry along the inflaton direction. This provides us with a unified picture of D-term inflation and high-scale supersymmetry breaking. The D term may be associated with a gauged U(1)_B-L, so that the end of inflation spontaneously breaks B-L in the visible sector.
https://arxiv.org/abs/1702.02173

 

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

http://dx.doi.org/10.1016/j.physletb.2016.07.004

 

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]

 

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

  1. 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 gravitational waves for universality classes of pseudoscalar inflation

Valerie Domcke, Mauro Pieroni, Pierre Binétruy

Mar 3, 2016

e-Print: arXiv:1603.01287 [astro-ph.CO]

 

Direct search for features in the primordial bispectrum

Stephen Appleby, Jinn-Ouk Gong, Dhiraj Kumar Hazra, Arman Shafieloo, Spyros Sypsas

December 30, 2015

e-print : http://arxiv.org/abs/1512.08977 [astro-ph.CO]

 

LEKIDs as mm-Wave Polarisation Analysers: Fabrication, Test Bench and Early Results

  1. 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

e-print : http://link.springer.com/article/10.1007/s10909-015-1421-8

 

QUBIC: A Fizeau Interferometer Targeting Primordial B-Modes

  1. Tartari, J. Aumont, S. Banfi, P. Battaglia, E. S. Battistelli, A. Baù, B. Bélier, D. Bennett, L. BergéAffiliated with CSNSM, Univ Paris-Sud, CNRS/IN2P3 and 67 more

December 28, 2015

e-print : http://link.springer.com/article/10.1007/s10909-015-1398-3

 

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

G.Cella, M. Pieroni

Dec 7, 2015

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

 

βfunction formalism for inflationary models with a non minimal coupling with gravity

Mauro Pieroni

Oct 12, 2015

e-Print: arXiv:1510.03691 [hep-ph]

 

Probing Massive Stars Around Gamma-Ray Burst Progenitors

Wenbin Lu, Pawan Kumar, George F. Smoot

Jan 29, 2015 – 13 pages

e-Print: arXiv:1501.07606 [astro-ph.HE]

 

21-cm Intensity Mapping with FAST
George F. Smoot, Ivan Debono.

Jul 14, 2014. 27 pp.
e-Print: arXiv:1407.3583 [astro-ph.CO]



Universality classes for models of inflation

  1. Binetruy, E. Kiritsis, J. Mabillard, M. Pieroni, C. Rosset.

July 3 2014

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

 

The Apparent Universe

Pierre Binétruy, Alexis Helou.

June 6 2014

e-Print : arXiv:1406.1658 [gr-qc]

 

See Saw Inflation / Dark Matter / Dark Energy / Baryogenesis

George F. Smoot.

May 12, 2014.

e-Print: arXiv:1405.2776 [astro-ph.CO]

 

Wiggly Whipped Inflation

Dhiraj Kumar Hazra, Arman Shafieloo, George F. Smoot, Alexei A. Starobinsky.

May 8, 2014.

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.

e-Print: arXiv:1404.6495 [hep-th]

 

Some Implications of inverse-Compton Scattering of Hot Cocoon Radiation by relativistic jets in Gamma-Ray Bursts

Pawan Kumar, George F. Smoot.

Feb 11, 2014

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

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

 

Phenomenology of dark energy: exploring the space of theories with future redshift surveys

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.

e-Print: arXiv:1312.6111 [astro-ph.CO]

 

Latest Progress on the QUBIC Instrument

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 –

e-Print: arXiv:1307.5701 [astro-ph.IM] | PDF

http://link.springer.com/article/10.1007%2Fs10909-013-1024-1