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CosTesGrav SIGNED

Cosmological Tests of Gravity

Total Cost €

EC-Contrib. €

Partnership

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Outcomes and
results

CosTesGrav project word cloud

Explore the words cloud of the CosTesGrav project. It provides you a very rough idea of what is the project "CosTesGrav" about.

limited mechanisms initiated perform discovery physics world theory revise originate gravity good modified cosmology origin linear universe 1998 astronomers portsmouth alternatively unknown assumes alternative extrapolation description theoretical surveys probing upcoming gr time solutions standard einstein solar seek possibility 2008 restore error erc starting remaining gravitational dark cosmological leaves kazuya koyama grant accelerated theories surprising tested model tests screening huge local scales construct conventional university expansion relativity accelerating position framework models describe made acceleration group slowing energy itself simulations frameworks 2013 accurately

Project "CosTesGrav" data sheet

The following table provides information about the project.

Coordinator	UNIVERSITY OF PORTSMOUTH HIGHER EDUCATION CORPORATION Organization address address: WINSTON CHURCHILL AVENUE UNIVERSITY HOUSE city: PORTSMOUTH postcode: PO1 2UP website: www.port.ac.uk contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.
Coordinator Country	United Kingdom [UK]
Total cost	1˙701˙132 €
EC max contribution	1˙701˙132 € (100%)
Programme	1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
Code Call	ERC-2014-CoG
Funding Scheme	ERC-COG
Starting year	2015
Duration (year-month-day)	from 2015-09-01 to 2021-07-31

Partnership

Take a look of project's partnership.

#	participants	country	role	EC contrib. [€]
1	UNIVERSITY OF PORTSMOUTH HIGHER EDUCATION CORPORATION UNIVERSITY OF PORTSMOUTH HIGHER EDUCATION CORPORATION Organization address address: WINSTON CHURCHILL AVENUE UNIVERSITY HOUSE city: PORTSMOUTH postcode: PO1 2UP website: www.port.ac.uk contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	UK (PORTSMOUTH)	coordinator	1˙701˙132.00

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Project objective

Einstein’s theory of General Relativity (GR) is tested accurately within the local universe i.e., the solar system, but this leaves open the possibility that it is not a good description at the largest scales in the Universe. The standard model of cosmology assumes GR as a theory to describe gravity on all scales. In 1998, astronomers made a surprising discovery that the expansion of the Universe is accelerating, not slowing down. This late-time acceleration of the Universe has become the most challenging problem in theoretical physics. Within the framework of GR, the acceleration would originate from an unknown “dark energy.” Alternatively, it could be that there is no dark energy and GR itself is in error on cosmological scales. The standard model of cosmology is based on a huge extrapolation of our limited knowledge of gravity. This discovery of the late time acceleration of the Universe may require us to revise the theory of gravity and the standard model of cosmology based on GR.

The main objective of my project is to develop cosmological tests of gravity and seek solutions to the origin of the observed accelerated expansion of the Universe by challenging conventional GR. Upcoming surveys will make cosmological tests of gravity a reality in the next five years. There are remaining issues in developing theoretical frameworks for probing gravitational physics on cosmological scales. We construct modified gravity theories as an alternative to dark energy and analyse “screening mechanisms” to restore GR on scales where it is well tested. We then develop better theoretical frameworks to perform cosmological tests of gravity that include non-linear scales by exploiting our theoretical knowledge of the models and our state-of-the-art simulations.

This grant will exploit and develop the world-leading position of the group initiated by Kazuya Koyama at the University of Portsmouth funded by the ERC starting grant (2008-2013).

Publications

List of publications.
year	authors and title	journal	last update
2019	Hans A. Winther, Santiago Casas, Marco Baldi, Kazuya Koyama, Baojiu Li, Lucas Lombriser, Gong-Bo Zhao Emulators for the nonlinear matter power spectrum beyond Î› CDM published pages: , ISSN: 2470-0010, DOI: 10.1103/physrevd.100.123540	Physical Review D 100/12	2020-02-20
2018	Kazuya Koyama Gravity beyond general relativity published pages: 1848001, ISSN: 0218-2718, DOI: 10.1142/s0218271818480012	International Journal of Modern Physics D 27/15	2020-02-20
2020	Chiaki Hikage, Kazuya Koyama, Ryuichi Takahashi Perturbation theory for the redshift-space matter power spectra after reconstruction published pages: , ISSN: 2470-0010, DOI: 10.1103/physrevd.101.043510	Physical Review D 101/4	2020-02-20
2020	Hiromu Ogawa, Tsutomu Kobayashi, Kazuya Koyama Relativistic stars in a cubic Galileon universe published pages: , ISSN: 2470-0010, DOI: 10.1103/physrevd.101.024026	Physical Review D 101/2	2020-02-20
2020	Alejandro Aviles, Kazuya Koyama, Jorge L. Cervantes-Cota, Hans A. Winther, Baojiu Li Marked correlation functions in perturbation theory published pages: 006-006, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2020/01/006	Journal of Cosmology and Astroparticle Physics 2020/01	2020-02-20
2019	A. Emir GÃ¼mrÃ¼kÃ§Ã¼oÄŸlu, Ryo Namba Role of matter in gravitation: Going beyond the Einstein-Maxwell theory published pages: , ISSN: 2470-0010, DOI: 10.1103/physrevd.100.124064	Physical Review D 100/12	2020-02-20
2019	Benjamin Bose, Kazuya Koyama, Hans A. Winther Assessing non-linear models for galaxy clustering III: theoretical accuracy for stage IV surveys published pages: 021-021, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2019/10/021	Journal of Cosmology and Astroparticle Physics 2019/10	2020-02-20
2019	Obinna Umeh, Kazuya Koyama The galaxy bias at second order in general relativity with non-Gaussian initial conditions published pages: 048-048, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2019/12/048	Journal of Cosmology and Astroparticle Physics 2019/12	2020-02-20
2017	Marco Crisostomi, Remko Klein, Diederik Roest Higher derivative field theories: degeneracy conditions and classes published pages: 124, ISSN: 1029-8479, DOI: 10.1007/JHEP06(2017)124	Journal of High Energy Physics 2017/6	2019-10-03
2019	Andrius Tamosiunas, David Bacon, Kazuya Koyama, Robert C. Nichol Testing emergent gravity on galaxy cluster scales published pages: 053-053, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2019/05/053	Journal of Cosmology and Astroparticle Physics 2019/05	2019-10-03
2019	Michael Kenna-Allison, A. Emir GÃ¼mrÃ¼kÃ§Ã¼oÇ§lu, Kazuya Koyama Viability of bigravity cosmology published pages: 104032, ISSN: 2470-0010, DOI: 10.1103/physrevd.99.104032	Physical Review D 99/10	2019-10-03
2016	Matthew Hull, Kazuya Koyama, Gianmassimo Tasinato Covariantized vector Galileons published pages: 64012, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.93.064012	Physical Review D 93/6	2019-10-03
2016	Marco Crisostomi, Kazuya Koyama, Gianmassimo Tasinato Extended scalar-tensor theories of gravity published pages: 044-044, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2016/04/044	Journal of Cosmology and Astroparticle Physics 2016/04	2019-10-03
2017	Christian Fidler, Thomas Tram, Cornelius Rampf, Robert Crittenden, Kazuya Koyama, David Wands Relativistic initial conditions for N-body simulations published pages: 043-043, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2017/06/043	Journal of Cosmology and Astroparticle Physics 2017/06	2019-10-03
2017	Benjamin Bose, Kazuya Koyama, Wojciech A. Hellwing, Gong-Bo Zhao, Hans A. Winther Theoretical accuracy in cosmological growth estimation published pages: 23519, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.96.023519	Physical Review D 96/2	2019-10-03
2016	Jeremy Sakstein, Harry Wilcox, David Bacon, Kazuya Koyama, Robert C. Nichol Testing gravity using galaxy clusters: new constraints on beyond Horndeski theories published pages: 019-019, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2016/07/019	Journal of Cosmology and Astroparticle Physics 2016/07	2019-10-03
2017	Benjamin Bose, Kazuya Koyama A perturbative approach to the redshift space correlation function: beyond the Standard Model published pages: 029-029, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2017/08/029	Journal of Cosmology and Astroparticle Physics 2017/08	2019-10-03
2015	Jeremy Sakstein, Kazuya Koyama Testing the Vainshtein mechanism using stars and galaxies published pages: 1544021, ISSN: 0218-2718, DOI: 10.1142/S0218271815440216	International Journal of Modern Physics D 24/12	2019-10-03
2016	Benjamin Bose, Kazuya Koyama A perturbative approach to the redshift space power spectrum: beyond the Standard Model published pages: 032-032, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2016/08/032	Journal of Cosmology and Astroparticle Physics 2016/08	2019-10-03
2017	Jeremy Sakstein, Eugeny Babichev, Kazuya Koyama, David Langlois, Ryo Saito Towards strong field tests of beyond Horndeski gravity theories published pages: 64013, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.95.064013	Physical Review D 95/6	2019-10-03
2016	Marco Crisostomi, Matthew Hull, Kazuya Koyama, Gianmassimo Tasinato Horndeski: beyond, or not beyond? published pages: 038-038, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2016/03/038	Journal of Cosmology and Astroparticle Physics 2016/03	2019-10-03
2018	Marco Crisostomi, Kazuya Koyama Self-accelerating universe in scalar-tensor theories after GW170817 published pages: , ISSN: 2470-0010, DOI: 10.1103/PhysRevD.97.084004	Physical Review D 97/8	2019-10-03
2016	Gong-Bo Zhao, Yuting Wang, Ashley J. Ross, Sarah Shandera, Will J. Percival, Kyle S. Dawson, Jean-Paul Kneib, Adam D. Myers, Joel R. Brownstein, Johan Comparat, TimothÃ©e Delubac, Pengyuan Gao, Alireza Hojjati, Kazuya Koyama, Cameron K. McBride, AndrÃ©s Meza, Jeffrey A. Newman, Nathalie Palanque-Delabrouille, Levon Pogosian, Francisco Prada, Graziano Rossi, Donald P. Schneider, Hee-Jong Seo, Charling Tao, Dandan Wang, Christophe YÃ¨che, Hanyu Zhang, Yuecheng Zhang, Xu Zhou, Fangzhou Zhu, Hu Zou The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast published pages: 2377-2390, ISSN: 0035-8711, DOI: 10.1093/mnras/stw135	Monthly Notices of the Royal Astronomical Society 457/3	2019-10-03
2018	Benjamin Bose, Kazuya Koyama, Matthew Lewandowski, Filippo Vernizzi, Hans A. Winther Towards precision constraints on gravity with the Effective Field Theory of Large-Scale Structure published pages: 063-063, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2018/04/063	Journal of Cosmology and Astroparticle Physics 2018/04	2019-10-03
2017	Bridget Falck, Kazuya Koyama, Gong-Bo Zhao, Marius Cautun Using voids to unscreen modified gravity published pages: 3262-3272, ISSN: 0035-8711, DOI: 10.1093/mnras/stx3288	Monthly Notices of the Royal Astronomical Society 475/3	2019-10-03
2018	A. Emir GÃ¼mrÃ¼kÃ§Ã¼oÄŸlu, Mehdi Saravani, Thomas P. Sotiriou HoÅ™ava gravity after GW170817 published pages: 24032, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.97.024032	Physical Review D 97/2	2019-10-03
2017	Wojciech A. Hellwing, Kazuya Koyama, Benjamin Bose, Gong-Bo Zhao Revealing modified gravity signals in matter and halo hierarchical clustering published pages: 23515, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.96.023515	Physical Review D 96/2	2019-10-03
2017	Gong-Bo Zhao, Marco Raveri, Levon Pogosian, Yuting Wang, Robert G. Crittenden, Will J. Handley, Will J. Percival, Florian Beutler, Jonathan Brinkmann, Chia-Hsun Chuang, Antonio J. Cuesta, Daniel J. Eisenstein, Francisco-Shu Kitaura, Kazuya Koyama, Benjamin Lâ€™Huillier, Robert C. Nichol, Matthew M. Pieri, Sergio Rodriguez-Torres, Ashley J. Ross, Graziano Rossi, Ariel G. SÃ¡nchez, Arman Shafieloo, Jeremy L. Tinker, Rita Tojeiro, Jose A. Vazquez, Hanyu Zhang Dynamical dark energy in light of the latest observations published pages: 627-632, ISSN: 2397-3366, DOI: 10.1038/s41550-017-0216-z	Nature Astronomy 1/9	2019-10-03
2016	Thomas Tram, Christian Fidler, Robert Crittenden, Kazuya Koyama, Guido W. Pettinari, David Wands The intrinsic matter bispectrum in Î›CDM published pages: 058-058, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2016/05/058	Journal of Cosmology and Astroparticle Physics 2016/05	2019-10-03
2018	Kazuya Koyama, Obinna Umeh, Roy Maartens, Daniele Bertacca The observed galaxy bispectrum from single-field inflation in the squeezed limit published pages: 050-050, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2018/07/050	Journal of Cosmology and Astroparticle Physics 2018/07	2019-10-03
2017	Hans A. Winther, Kazuya Koyama, Marc Manera, Bill S. Wright, Gong-Bo Zhao COLA with scale-dependent growth: applications to screened modified gravity models published pages: 006-006, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2017/08/006	Journal of Cosmology and Astroparticle Physics 2017/08	2019-10-03
2016	J. Ben Achour, M. Crisostomi, K. Koyama, D. Langlois, K. Noui, G. Tasinato Degenerate higher order scalar-tensor theories beyond Horndeski up to cubic order published pages: 100, ISSN: 1029-8479, DOI: 10.1007/JHEP12(2016)100	Journal of High Energy Physics 2016/12	2019-10-03
2016	A. Emir GÃ¼mrÃ¼kÃ§Ã¼oÄŸlu, Kazuya Koyama, and Shinji Mukohyama Role of matter in extended quasidilaton massive gravity published pages: 123510, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.94.123510	Physical Review D 94	2019-10-03
2018	Simone Peirone, Kazuya Koyama, Levon Pogosian, Marco Raveri, Alessandra Silvestri Large-scale structure phenomenology of viable Horndeski theories published pages: 43519, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.97.043519	Physical Review D 97/4	2019-10-03
2018	Thomas E. Collett, Lindsay J. Oldham, Russell J. Smith, Matthew W. Auger, Kyle B. Westfall, David Bacon, Robert C. Nichol, Karen L. Masters, Kazuya Koyama, Remco van den Bosch A precise extragalactic test of General Relativity published pages: 1342-1346, ISSN: 0036-8075, DOI: 10.1126/science.aao2469	Science 360/6395	2019-10-03
2016	Robert J. Hardwick, Vincent Vennin, Kazuya Koyama, David Wands Constraining Curvatonic Reheating published pages: 42, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2016/08/042	Journal of Cosmology and Astroparticle Physics 2016/08	2019-10-03
2017	Chiaki Hikage, Kazuya Koyama, Alan Heavens Perturbation theory for BAO reconstructed fields: One-loop results in the real-space matter density field published pages: 43513, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.96.043513	Physical Review D 96/4	2019-10-03
2016	Christian Fidler, Thomas Tram, Cornelius Rampf, Robert Crittenden, Kazuya Koyama, David Wands Relativistic interpretation of Newtonian simulations for cosmic structure formation published pages: 031-031, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2016/09/031	Journal of Cosmology and Astroparticle Physics 2016/09	2019-10-03
2016	Harry Wilcox, Robert C. Nichol, Gong-Bo Zhao, David Bacon, Kazuya Koyama, A. Kathy Romer Simulation tests of galaxy cluster constraints on chameleon gravity published pages: 715-725, ISSN: 0035-8711, DOI: 10.1093/mnras/stw1617	Monthly Notices of the Royal Astronomical Society 462/1	2019-10-03
2018	M. Crisostomi, K. Noui, C. Charmousis, D. Langlois Beyond Lovelock gravity: Higher derivative metric theories published pages: 44034, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.97.044034	Physical Review D 97/4	2019-10-03
2017	Christian Fidler, Thomas Tram, Cornelius Rampf, Robert Crittenden, Kazuya Koyama, David Wands General relativistic weak-field limit and Newtonian N-body simulations published pages: 022-022, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2017/12/022	Journal of Cosmology and Astroparticle Physics 2017/12	2019-10-03
2017	Jeremy Sakstein, Michael Kenna-Allison, Kazuya Koyama Stellar pulsations in beyond Horndeski gravity theories published pages: 007-007, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2017/03/007	Journal of Cosmology and Astroparticle Physics 2017/03	2019-10-03
2016	Wojciech A. Hellwing, Matthieu Schaller, Carlos S. Frenk, Tom Theuns, Joop Schaye, Richard G. Bower, Robert A. Crain The effect of baryons on redshift space distortions and cosmic density and velocity fields in the EAGLE simulation published pages: L11-L15, ISSN: 1745-3933, DOI: 10.1093/mnrasl/slw081	Monthly Notices of the Royal Astronomical Society: Letters 461/1	2019-10-03
2017	Benjamin L?Huillier, Hans A. Winther, David F. Mota, Changbom Park, Juhan Kim Dark matter haloes in modified gravity and dark energy: interaction rate, small- and large-scale alignment published pages: 3174-3183, ISSN: 0035-8711, DOI: 10.1093/mnras/stx700	Monthly Notices of the Royal Astronomical Society 468/3	2019-10-03
2017	Sownak Bose, Baojiu Li, Alexandre Barreira, Jian-hua He, Wojciech A. Hellwing, Kazuya Koyama, Claudio Llinares and Gong-Bo Zhao Speeding up N-body simulations of modified gravity: chameleon screening models published pages: 50, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2017/02/050	Journal of Cosmology and Astroparticle Physics 2	2019-10-03
2016	Alejo Stark, Christopher J. Miller, Nicholas Kern, Daniel Gifford, Gong-Bo Zhao, Baojiu Li, Kazuya Koyama, Robert C. Nichol Probing theories of gravity with phase space-inferred potentials of galaxy clusters published pages: 84036, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.93.084036	Physical Review D 93/8	2019-10-03
2017	Wojciech A. Hellwing, Adi Nusser, Martin Feix, Maciej Bilicki Not a Copernican observer: biased peculiar velocity statistics in the local Universe published pages: stx213, ISSN: 0035-8711, DOI: 10.1093/mnras/stx213	Monthly Notices of the Royal Astronomical Society	2019-10-03
2016	Kazuya Koyama Cosmological Tests of Modified Gravity published pages: 4, ISSN: 0034-4885, DOI: 10.1088/0034-4885/79/4/046902	Reports on Progress in Physics 79	2019-10-03
2017	Sownak Bose Wojciech A. Hellwing Carlos S. Frenk Adrian Jenkins Mark R. Lovell John C. Helly Baojiu Li Violeta Gonzalez-Perez Liang Gao Substructure and galaxy formation in the Copernicus Complexio warm dark matter simulations published pages: 4520, ISSN: 0035-8711, DOI: 10.1093/mnras/stw2686	Monthly Notices of the Royal Astronomical Society 464	2019-10-03
2018	Marco Crisostomi, Kazuya Koyama Vainshtein mechanism after GW170817 published pages: 21301, ISSN: 2470-0010, DOI: 10.1103/PhysRevD.97.021301	Physical Review D 97/2	2019-10-03
2016	Ying-li Zhang, Kazuya Koyama, Misao Sasaki, Gong-Bo Zhao Acausality in nonlocal gravity theory published pages: 39, ISSN: 1029-8479, DOI: 10.1007/JHEP03(2016)039	Journal of High Energy Physics 2016/3	2019-10-03
2017	Pablo Arnalte-Mur, Wojciech A. Hellwing, Peder Norberg Real- and redshift-space halo clustering in f ( R ) cosmologies published pages: stx196, ISSN: 0035-8711, DOI: 10.1093/mnras/stx196	Monthly Notices of the Royal Astronomical Society	2019-10-03
2018	Emanuela Dimastrogiovanni, Matteo Fasiello, Robert J. Hardwick, Hooshyar Assadullahi, Kazuya Koyama, David Wands Non-Gaussianity from axion-gauge fields interactions during inflation published pages: 029-029, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2018/11/029	Journal of Cosmology and Astroparticle Physics 2018/11	2019-10-03
2019	Juan Espejo, Simone Peirone, Marco Raveri, Kazuya Koyama, Levon Pogosian, Alessandra Silvestri Phenomenology of large scale structure in scalar-tensor theories: Joint prior covariance of w DE , Î£ , and Î¼ in Horndeski theories published pages: 23512, ISSN: 2470-0010, DOI: 10.1103/physrevd.99.023512	Physical Review D 99/2	2019-10-03
2019	A. Emir GÃ¼mrÃ¼kÃ§Ã¼oÄŸlu, Kazuya Koyama Generalizing the matter coupling in massive gravity: A search for new interactions published pages: 84004, ISSN: 2470-0010, DOI: 10.1103/physrevd.99.084004	Physical Review D 99/8	2019-10-03
2019	Christian Fidler, Alexander Kleinjohann, Thomas Tram, Cornelius Rampf, Kazuya Koyama A new approach to cosmological structure formation with massive neutrinos published pages: 025-025, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2019/01/025	Journal of Cosmology and Astroparticle Physics 2019/01	2019-10-03
2019	M. Crisostomi, K. Koyama, D. Langlois, K. Noui, D.A. Steer Cosmological evolution in DHOST theories published pages: 030-030, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2019/01/030	Journal of Cosmology and Astroparticle Physics 2019/01	2019-10-03
2019	Noemi Frusciante, Ryotaro Kase, Kazuya Koyama, Shinji Tsujikawa, Daniele Vernieri Tracker and scaling solutions in DHOST theories published pages: 167-175, ISSN: 0370-2693, DOI: 10.1016/j.physletb.2019.01.009	Physics Letters B 790	2019-10-03

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