Christophe Ringeval

Contact details

Email: christophe.ringeval@uclouvain.be
Phone: +32 10 47 2075
Office: E352
Homepage: http://ringeval.info

My research interests range from the understanding of the early universe, the place and time at which the candidate unified theories of Nature may have been at work, to data analysis and model testing with cosmological observables. My researches are for one part driven by theoretical results and modern observational discoveries, and for the other part by simply having fun!

I have been involved in the Planck data analysis of the Cosmic Microwave Background (CMB) while my current interests revolve around CMB polarization measurements, large scale structures (Euclid satellite), gravitational waves (LISA satellites) and forecasts for future 21cm surveys, plus a handful of other fun projects.

Publications @ Inspire @ ADS @ arXiv

Publications @ CURL

2025

  • [1] Ringeval C 2025 BaBy Cosmic Tension
    Abstract: arXiv:2510.03118

  • [2] Blachier B and Ringeval C 2025 Time-reversed Stochastic Inflation
    Abstract: arXiv:2504.17680

    • 2024

  • [1] Auclair P, Blachier B and Ringeval C 2024 Clocking the End of Cosmic Inflation JCAP 10 049
    Abstract: arXiv:2406.14152
    Journal: 10.1088/1475-7516/2024/10/049

  • [2] Martin J, Ringeval C and Vennin V 2024 Vanilla Inflation Predicts Negative Running EPL 148 29002
    Abstract: arXiv:2404.15089
    Journal: 10.1209/0295-5075/ad847c

  • [3] Martin J, Ringeval C and Vennin V 2024 Cosmic Inflation at the crossroads JCAP 07 087
    Abstract: arXiv:2404.10647
    Journal: 10.1088/1475-7516/2024/07/087

  • [4] Martin J, Ringeval C and Vennin V 2024 Encyclopædia Inflationaris: Opiparous Edition Phys. Dark Univ. 46 101653
    Abstract: arXiv:1303.3787
    Journal: 10.1016/j.dark.2024.101653

    • 2023

  • [1] Blachier B, Auclair P, Ringeval C and Vennin V 2023 Spatial Curvature from Super-Hubble Cosmological Fluctuations Phys. Rev. D 108 123510
    Abstract: arXiv:2302.14530
    Journal: 10.1103/PhysRevD.108.123510

    • 2022

  • [1] Auclair P and Ringeval C 2022 Slow-roll inflation at N3LO Phys. Rev. D 106 063512
    Abstract: arXiv:2205.12608
    Journal: 10.1103/PhysRevD.106.063512

  • [2] Cunha D Camargo Neves da, Ringeval C and Bouchet F R 2022 Stochastic gravitational waves from long cosmic strings JCAP 09 078
    Abstract: arXiv:2205.04349
    Journal: 10.1088/1475-7516/2022/09/078

    • 2021

  • [1] Cunha D C N da and Ringeval C 2021 Interferences in the Stochastic Gravitational Wave Background JCAP 2108 005
    Abstract: arXiv:2104.14231
    Journal: 10.1088/1475-7516/2021/08/005

  • [2] Auclair P, Peter P, Ringeval C and Steer D 2021 Irreducible cosmic production of relic vortons JCAP 03 098
    Abstract: arXiv:2010.04620
    Journal: 10.1088/1475-7516/2021/03/098

    • 2019

  • [1] Fidler C, Lesgourgues J and Ringeval C 2019 Lensing anomalies from the epoch of reionisation JCAP 1910 042
    Abstract: arXiv:1906.05042
    Journal: 10.1088/1475-7516/2019/10/042

  • [2] Auclair P, Ringeval C, Sakellariadou M and Steer D 2019 Cosmic string loop production functions JCAP 1906 015
    Abstract: arXiv:1903.06685
    Journal: 10.1088/1475-7516/2019/06/015

  • [3] Ringeval C, Suyama T and Yamaguchi M 2019 A Large mass hierarchy from a small nonminimal coupling Phys. Rev. D99 123524
    Abstract: arXiv:1903.03544
    Journal: 10.1103/PhysRevD.99.123524

  • [4] Chowdhury D, Martin J, Ringeval C and Vennin V 2019 Inflation after Planck: Judgment Day Phys. Rev. D100 083537
    Abstract: arXiv:1902.03951
    Journal: 10.1103/PhysRevD.100.083537

    • 2018

  • [1] Boucher V, Visscher S de and Ringeval C 2018 Optical Follow-up of Planck Cluster Candidates with Small Instruments Publ. Astron. Soc. Pac. 130 104001
    Abstract: arXiv:1801.04124
    Journal: 10.1088/1538-3873/aad53e

  • [2] Vafaei Sadr A, Movahed S M S, Farhang M, Ringeval C and Bouchet F R 2018 Multi-Scale Pipeline for the Search of String-Induced CMB Anisotropies Mon. Not. Roy. Astron. Soc. 475 1010
    Abstract: arXiv:1710.00173
    Journal: 10.1093/mnras/stx3126

  • [3] Finelli F and others 2018 Exploring cosmic origins with CORE: Inflation JCAP 1804 016
    Abstract: arXiv:1612.08270
    Journal: 10.1088/1475-7516/2018/04/016

  • [4] Delabrouille J and others 2018 Exploring cosmic origins with CORE: Survey requirements and mission design JCAP 1804 014
    Abstract: arXiv:1706.04516
    Journal: 10.1088/1475-7516/2018/04/014

  • [5] Di Valentino E and others 2018 Exploring cosmic origins with CORE: Cosmological parameters JCAP 1804 017
    Abstract: arXiv:1612.00021
    Journal: 10.1088/1475-7516/2018/04/017

  • [6] Martin J, Ringeval C and Vennin V 2018 ASPIC: Accurate Slow-roll Predictions for Inflationary Cosmology ascl:1806.031
    Ads: ascl:1806.031

    • 2017

  • [1] Ringeval C and Suyama T 2017 Stochastic gravitational waves from cosmic string loops in scaling JCAP 1712 027
    Abstract: arXiv:1709.03845
    Journal: 10.1088/1475-7516/2017/12/027

  • [2] Fidler C and Ringeval C 2017 CMB anisotropies from patchy reionisation and diffuse Sunyaev-Zel’dovich effects JCAP 1710 026
    Abstract: arXiv:1709.01395
    Journal: 10.1088/1475-7516/2017/10/026

  • [3] McEwen J D, Feeney S M, Peiris H V, Wiaux Y, Ringeval C and Bouchet F R 2017 Wavelet-Bayesian inference of cosmic strings embedded in the cosmic microwave background Mon. Not. Roy. Astron. Soc. 472 4081
    Abstract: arXiv:1611.10347
    Journal: 10.1093/mnras/stx2268

    • 2016

  • [1] Martin J, Ringeval C and Vennin V 2016 Shortcomings of New Parametrizations of Inflation Phys. Rev. D94 123521
    Abstract: arXiv:1609.04739
    Journal: 10.1103/PhysRevD.94.123521

  • [2] Martin J, Ringeval C and Vennin V 2016 Information Gain on Reheating: the One Bit Milestone Phys. Rev. D93 103532
    Abstract: arXiv:1603.02606
    Journal: 10.1103/PhysRevD.93.103532

  • [3] Ringeval C, Yamauchi D, Yokoyama J and Bouchet F R 2016 Large scale CMB anomalies from thawing cosmic strings JCAP 1602 033
    Abstract: arXiv:1510.01916
    Journal: 10.1088/1475-7516/2016/02/033

    • 2015

  • [1] Vennin V, Martin J and Ringeval C 2015 Cosmic Inflation and Model Comparison Comptes Rendus Physique 16 960
    Journal: 10.1016/j.crhy.2015.07.007

  • [2] Jimenez J B, Heisenberg L, Olmo G J and Ringeval C 2015 Cascading dust inflation in Born-Infeld gravity JCAP 1511 046
    Abstract: arXiv:1509.01188
    Journal: 10.1088/1475-7516/2015/11/046

  • [3] Martin J, Ringeval C and Vennin V 2015 Observing Inflationary Reheating Phys. Rev. Lett. 114 081303
    Abstract: arXiv:1410.7958
    Journal: 10.1103/PhysRevLett.114.081303

    • 2014

  • [1] Martin J, Ringeval C and Vennin V 2014 How Well Can Future CMB Missions Constrain Cosmic Inflation? JCAP 1410 038
    Abstract: arXiv:1407.4034
    Journal: 10.1088/1475-7516/2014/10/038

  • [2] Martin J, Ringeval C, Trotta R and Vennin V 2014 Compatibility of Planck and BICEP2 in the Light of Inflation Phys.Rev. D90 063501
    Abstract: arXiv:1405.7272
    Journal: 10.1103/PhysRevD.90.063501

  • [3] Ringeval C, Suyama T, Takahashi T, Yamaguchi M and Yokoyama S 2014 Dark energy from inflation J.Phys.Conf.Ser. 485 012023
    Journal: 10.1088/1742-6596/485/1/012023

  • [4] Martin J, Ringeval C, Trotta R and Vennin V 2014 The Best Inflationary Models After Planck JCAP 1403 039
    Abstract: arXiv:1312.3529
    Journal: 10.1088/1475-7516/2014/03/039

  • [5] Ringeval C 2014 Fast Bayesian inference for slow-roll inflation Mon.Not.Roy.Astron.Soc. 439 3253
    Abstract: arXiv:1312.2347
    Journal: 10.1093/mnras/stu109

  • [6] Ade P A R and others 2014 Planck 2013 results. I. Overview of products and scientific results Astron.Astrophys. 571 A1
    Abstract: arXiv:1303.5062
    Journal: 10.1051/0004-6361/201321529

  • [7] Ade P A R and others 2014 Planck 2013 results. XXV. Searches for cosmic strings and other topological defects Astron.Astrophys. 571 A25
    Abstract: arXiv:1303.5085
    Journal: 10.1051/0004-6361/201321621

  • [8] Ade P A R and others 2014 Planck 2013 results. XV. CMB power spectra and likelihood Astron.Astrophys. 571 A15
    Abstract: arXiv:1303.5075
    Journal: 10.1051/0004-6361/201321573

  • [9] Martin J, Ringeval C and Vennin V 2014 Encyclopædia Inflationaris Phys.Dark Univ. 5-6 75–235
    Abstract: arXiv:1303.3787v3
    Journal: 10.1016/j.dark.2014.01.003

    • 2013

  • [1] Beltran Jimenez J, Musso M and Ringeval C 2013 Exact Mapping between Tensor and Most General Scalar Power Spectra Phys.Rev. D88 043524
    Abstract: arXiv:1303.2788
    Journal: 10.1103/PhysRevD.88.043524

  • [2] Martin J, Ringeval C and Vennin V 2013 K-inflationary Power Spectra at Second Order JCAP 1306 021
    Abstract: arXiv:1303.2120
    Journal: 10.1088/1475-7516/2013/06/021

  • [3] Ringeval C, Suyama T and Yokoyama J 2013 Magneto-reheating constraints from curvature perturbations JCAP 1309 020
    Abstract: arXiv:1302.6013
    Journal: 10.1088/1475-7516/2013/09/020

  • [4] Peter P and Ringeval C 2013 A Boltzmann treatment for the vorton excess problem JCAP 1305 005
    Abstract: arXiv:1302.0953
    Journal: 10.1088/1475-7516/2013/05/005

  • [5] Kuroyanagi S, Ringeval C and Takahashi T 2013 Early Universe Tomography with CMB and Gravitational Waves Phys.Rev. D87 083502
    Abstract: arXiv:1301.1778
    Journal: 10.1103/PhysRevD.87.083502

    • 2012

  • [1] Clesse S, Lopez-Honorez L, Ringeval C, Tashiro H and Tytgat M H G 2012 Background reionization history from omniscopes Phys.Rev. D86 123506
    Abstract: arXiv:1208.4277
    Journal: 10.1103/PhysRevD.86.123506

  • [2] Chen X and Ringeval C 2012 Searching for Standard Clocks in the Primordial Universe JCAP 1208 014
    Abstract: arXiv:1205.6085
    Journal: 10.1088/1475-7516/2012/08/014

  • [3] Ringeval C and Bouchet F R 2012 All Sky CMB Map from Cosmic Strings Integrated Sachs-Wolfe Effect Phys.Rev. D86 023513
    Abstract: arXiv:1204.5041
    Journal: 10.1103/PhysRevD.86.023513

  • [4] Demozzi V and Ringeval C 2012 Reheating constraints in inflationary magnetogenesis JCAP 1205 009
    Abstract: arXiv:1202.3022
    Journal: 10.1088/1475-7516/2012/05/009

    • 2011

  • [1] Martin J, Ringeval C and Trotta R 2011 Hunting Down the Best Model of Inflation with Bayesian Evidence Phys.Rev. D83 063524
    Abstract: arXiv:1009.4157
    Journal: 10.1103/PhysRevD.83.063524

    • 2010

  • [1] Ringeval C, Suyama T, Takahashi T, Yamaguchi M and Yokoyama S 2010 Relation between inflation and dark energy J.Phys.Conf.Ser. 259 012082
    Journal: 10.1088/1742-6596/259/1/012082

  • [2] Ringeval C, Suyama T, Takahashi T, Yamaguchi M and Yokoyama S 2010 Dark energy from primordial inflationary quantum fluctuations Phys.Rev.Lett. 105 121301
    Abstract: arXiv:1006.0368
    Journal: 10.1103/PhysRevLett.105.121301

  • [3] Lorenz L, Ringeval C and Sakellariadou M 2010 Cosmic string loop distribution on all length scales and at any redshift JCAP 1010 003
    Abstract: arXiv:1006.0931
    Journal: 10.1088/1475-7516/2010/10/003

  • [4] Ringeval C 2010 Cosmic strings and their induced non-Gaussianities in the cosmic microwave background Adv.Astron. 2010 380507
    Abstract: arXiv:1005.4842
    Journal: 10.1155/2010/380507

  • [5] Martin J and Ringeval C 2010 First CMB Constraints on the Inflationary Reheating Temperature Phys.Rev. D82 023511
    Abstract: arXiv:1004.5525
    Journal: 10.1103/PhysRevD.82.023511

  • [6] Murray S, Ringeval C and Zonetti S 2010 Graviton confinement inside hypermonopoles of any dimension JCAP 1009 015
    Abstract: arXiv:1002.5021
    Journal: 10.1088/1475-7516/2010/09/015

  • [7] Hindmarsh M, Ringeval C and Suyama T 2010 The CMB temperature trispectrum of cosmic strings Phys.Rev. D81 063505
    Abstract: arXiv:0911.1241
    Journal: 10.1103/PhysRevD.81.063505

  • [8] Ringeval C 2010 Dirac-Born-Infeld and k-inflation: the CMB anisotropies from string theory J.Phys.Conf.Ser. 203 012056
    Abstract: arXiv:0910.2167
    Journal: 10.1088/1742-6596/203/1/012056

    • 2009

  • [1] Clesse S, Ringeval C and Rocher J 2009 Fractal initial conditions and natural parameter values in hybrid inflation Phys.Rev. D80 123534
    Abstract: arXiv:0909.0402
    Journal: 10.1103/PhysRevD.80.123534

  • [2] Hindmarsh M, Ringeval C and Suyama T 2009 The CMB temperature bispectrum induced by cosmic strings Phys.Rev. D80 083501
    Abstract: arXiv:0908.0432
    Journal: 10.1103/PhysRevD.80.083501

  • [3] De Felice A and Ringeval C 2009 Charged seven-dimensional spacetimes with spherically symmetric extra-dimensions Phys.Rev. D79 123525
    Abstract: arXiv:0904.0188
    Journal: 10.1103/PhysRevD.79.123525

  • [4] De Felice A and Ringeval C 2009 Massive gravitons trapped inside a hypermonopole Phys.Lett. B671 158–61
    Abstract: arXiv:0809.0464
    Journal: 10.1016/j.physletb.2008.11.052

    • 2008

  • [1] Lorenz L, Martin J and Ringeval C 2008 K-inflationary Power Spectra in the Uniform Approximation Phys.Rev. D78 083513
    Abstract: arXiv:0807.3037
    Journal: 10.1103/PhysRevD.78.083513

  • [2] Lorenz L, Martin J and Ringeval C 2008 Constraints on Kinetically Modified Inflation from WMAP5 Phys.Rev. D78 063543
    Abstract: arXiv:0807.2414
    Journal: 10.1103/PhysRevD.78.063543

  • [3] Lorenz L, Martin J and Ringeval C 2008 Brane inflation and the WMAP data: A Bayesian analysis JCAP 0804 001
    Abstract: arXiv:0709.3758
    Journal: 10.1088/1475-7516/2008/04/001

  • [4] Fraisse A A, Ringeval C, Spergel D N and Bouchet F R 2008 Small-Angle CMB Temperature Anisotropies Induced by Cosmic Strings Phys.Rev. D78 043535
    Abstract: arXiv:0708.1162
    Journal: 10.1103/PhysRevD.78.043535

  • [5] Ringeval C 2008 The exact numerical treatment of inflationary models Lect.Notes Phys. 738 243–73
    Abstract: arXiv:astro-ph/0703486
    Journal: 10.1007/978-3-540-74353-8_7

    • 2007

  • [1] Ringeval C, Sakellariadou M and Bouchet F 2007 Cosmological evolution of cosmic string loops JCAP 0702 023
    Abstract: arXiv:astro-ph/0511646
    Journal: 10.1088/1475-7516/2007/02/023