Academic / CV


My CV is also available in French in PDF here. My ORCId is

Curriculum Vitae

Universite Paris 11, Orsay, France
Ecole Normale Superieure de Cachan, Paris, France
Physics: Licence with Honours, Master 1 with Honours, Master 2 of Theoretical Physics at ENS Paris with honours
Mathematics: Licence with honours
April-July 2003
Research experience, Department of Physics, University of Oxford, UK
2004 - 2012
High school professor: "Professeur Agrege de Physique", rank 26/170 Ministere de l'Education Nationale, France
Institut d'Astrophysique de Paris, France Physics PhD in Astrophysics and Theoretical Physics
February-July 2009
Invited Researcher Caltech, Pasadena, CA, USA
September 2008-August 2011
Department of Physics, University of Illinois at Urbana-Champaign, USA Post-doctoral researcher in Cosmology
June 2010-August 2011
Invited scientist Johns Hopkins University, Baltimore, MD, USA
September 2011 - May 2013
University of Waterloo /Perimeter Institute CITA National Fellow / Postdoctoral National Fellow of the Government of Canada Postdoctoral reseach associate at Perimeter Institute for Theoretical Physics
Since May 2013
CR2 Researcher at CNRS, Institut d'Astrophysique de Paris


November 2007 - November 2011
Participant in ANR OTARIE
October 2009 - October 2013
Participant in NSF AST-0908902 "Cosmic Voids as a probe for Dark Energy"
September 2011 - September 2012
Grant of the Ministry of Industry of the Government of Canada
September 2011 - May 2013
CITA National Fellow
October 2013 - October 2017
Participant in ANR VLASIX
Principal Investigator PNCG grant VELMASS (3 600 euros)
Principal Investigator PNCG grant VELMASS (5 300 euros) and multi-disciplinary exploratory project BIG4 (6 000 euros).
October 2016 - October 2020
Principal Investigator ANR BIG4 (and also)
Principal investigator of grant ORIGIN to fund the renewal and expansion of the Horizon cluster (75 000 euros).
Recipient of a Maupertuis fellowship to visit the department of Astronomy in Finland (see description here)

CPU Time allocation

Co-PI of GENCI proposal (6 million CPU hours)
Co-I C2PAP proposal (1.7 million CPU hours)
2016 - 2017
Co-I SIBELIUS proposal (12 million CPU hours)
Co-PI of GENCI proposal (2.5 million CPU hours)
PI of GENCI proposal (1.1 million CPU hours)


Workshop organization

  • Bulk flow think tank
  • Deciphering the dynamic Universe confronting predictions with observations, November 27-28 2014, MPA, Garching, Germany (here).
  • Midgard/BLSS collaboration meeting, October 31 - November 4 2016, MPA, Garching, Germany (here)
  • Midgard/BLSS collaboration meeting, April 10-12 2017, IAP, Paris, France (here)

Teaching experience

Teaching assistant
Licence L1 at Université Paris 6/Pierre et Marie Curie (2005-2008, 3×64 heures)
Co-advisor of PhD students
Esfandiar Alizadeh (University of Illinois at Urbana-Champaign, 2009 - 2010)
Rahul Biswas (University of Illinois at Urbana-Champaign, 2009 - 2010)
Raphael Sadoun (Institut d’Astrophysique de Paris/France, 2012)
Bridget Falk (Johns Hopkins University, 2011)
Siavash Aslanbeigi (Perimeter Institute for Theoretical Physics, 2011 - 2013)
Jonathan Carrick (University of Waterloo, 2013 - 2014)
Stephen Turnbull (University of Waterloo, 2014 - 2015)
Co-supervisor of PhD students
Doogesh Kodi Ramanah (2016 - )
Physics oral exam
Lycée Fénelon-Sainte Marie (PSI, 2013-2016)
Lycée Saint Louis (MP
, Maple, 2013-2014)
Lycée Saint Louis (MPSI, 2014-2016, PC, 2014-2015)

Refereeing activity

  • The Astrophysical Journal
  • Physical Review D
  • Physical Review Letters
  • Journal of Cosmology and Astroparticle Physics
  • Monthly Notices of Royal Astronomical Society
  • Nature journals

Significant work for science community

Seminal article on the practical use of cosmic voids as cosmological probe (Lavaux & Wandelt, ApJ, 2012). This article has 79 direct citations but has also triggered a new field of exploration in itself. Following this work, we have managed in 2016 to get the first competitive direct measurement of cosmological parameters relying on cosmic voids (Hamaus et al., Phys Rev L, 2016).

I have made robust statistical measurements of cosmic voids and deduced cosmological parameters and constraints on the amplitude of matter density modes on large scales. Notably Lavaux et al. (ApJ, 2010) had a significant impact on observational and theoretical communities.

(C) Guilhem Lavaux, 2014 - 2017,
Last updated: February 03, 2019