Contact
Name
Vincent Boucher
Vincent Boucher
Position
Former member
Research scientist in CP3 from September 2003 to April 2013
Current position: Partner at B12 Consulting.
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Projects
I am involved in the following research direction:

Scalar-tensor theories of gravitation

The strong equivalence principle (SEP) does not hold anymore in various extensions of General Relativity. Its violations can be revealed by the non-universality of free-falling for compact objects and we have developed a generic and effective way to test the SEP in the Cosmic Microwave Background (CMB). A violation of the SEP indeed alters the amplitude of the acoustic oscillations in the primeval plasma. Using the WMAP data, we have contrained a possible SEP violation for the baryons.

Our interests are also focused on the scalar-tensor theories of gravitation and their cosmologies. In a more specific way, we are currently studying a model where the scalar sector is conformally invariant. The effective fluid related to the non-minimally coupled scalar field differs from the other cosmological fluids of radiation by its very particular anisotropic pressure and we are studying its impact on the CMB anisotropies by modifying the CAMB code.


Show past projects.
Publications in CP3
All my publications on Inspire

2010

Introducing the Dark Energy Universe Simulation Series (DEUSS)
Y. Rasera, J-M. Alimi, J. Courtin, F. Roy, P-S. Corasaniti, A. Füzfa and V. Boucher
[Abstract] [PDF] [Journal] Invisible Universe International Conference, UNESCO-Paris, 2009. DEUS Consortium reference paper.
Contribution to proceedings. 15th July.
Imprints of dark energy on cosmic structure formation: II) Non-Universality of the halo mass function
Jérôme Courtin, Yann Rasera, Jean-Michel Alimi, Pier-Stefano Corasaniti, Vincent Boucher, André Füzfa
[Abstract] [PDF] [Journal] Published in MNRAS (410) 1911, 2011.
Refereed paper. 20th January.

2009

Imprints of Dark Energy on Cosmic Structure Formation I) Realistic Quintessence Models and the Non-Linear Matter Power Spectrum
Jean-Michel Alimi, André Füzfa, Vincent Boucher, Yann Rasera, Jérôme Courtin, Pier-Stefano Corasaniti
[Abstract] [PDF] [Journal] Published in the Monthly Notices of the Royal Astronomical Society, 401, 775-790 (2010).
Refereed paper. 31st March.

2005

A cosmological test for general relativity
V. Boucher
[Abstract] [PDF] Published in Gravitation & Cosmology 11 (2005) 71-74
Contribution to proceedings. 26th September.


[UCLouvain] - [SST] [IRMP] - [SC]
Contact : Jérôme de Favereau
Research
Cosmo related