Marcello Musso
Former member
Postdoc in CP3 from January 2012 to December 2014
Past projects
Hide past projects.

I am involved in the following research direction:

Cosmic inflation

The first measurements of acoustic peaks in the CMB anisotropies strongly suggest that the birth of cosmological fluctuations may have taken place during an early inflationary era of the universe.
In this domain, our activities deal with the construction of explicit models of inflation as well as the extraction of their observable consequences. Our fields of expertise comprise some actively debated subjects as the existence of features (e.g. trans-Planckian effects), inflation with non-minimally coupled scalar fields, DBI- and brane inflation as in the context of String Theory.
For all these theories, we are maintaining various numerical tools such as the ASPIC and FieldInf librairies allowing to compute reheating-consistent predictions for comparison with cosmological data.

External collaborators: Jérôme Martin (IAP, Paris, France), Vincent Vennin (Portsmouth, U.K.), Sébastien Clesse (RWTH, Aachen, Germany).

Large Scale Structures

The statistical properties of large scale structures contain a large amount of information on cosmological observables. The abundance of halos of given mass is sensitive to various cosmological observables such as the equation of state of dark energy, to the amount of primordial non-Gaussianity as well as to the mass and cross section of the dark matter particles. Various of our activities and research are equally focused to the future EUCLID satellite mission.

External collaborators: M. Musso.


The forthcoming cosmological experiments should provide new insights on the amount of non-Gaussianity eventually present in the Cosmic Microwave Background fluctuations and large scale structures surveys. We study various early universe models that could potentially let some imprints in these observables and especially cosmic strings.

External collaborators: Teruaki Suyama (The University of Tokyo, Japan), Mark Hindmarsh (Sussex University, U.K.), Stéphane Colombi, François Bouchet (Institut d'Astrophysique de Paris, France).

Publications in CP3
All my publications on Inspire


On the Markovian assumption in the excursion set approach: the approximation of Markov Velocities
Marcello Musso and Ravi K. Sheth
[Abstract] [PDF] [Journal] Published in MNRAS 443 (2014) 1601-1613
Refereed paper. 3rd February.
Stochasticity in halo formation and the excursion set approach
Marcello Musso and Ravi K. Sheth
[Abstract] [PDF] [Journal] Published in MNRAS 442 (2014) 401-405
Refereed paper. 15th January.


The importance of stepping up in the excursion set approach
Marcello Musso and Ravi K. Sheth
[Abstract] [PDF] [Journal] Published in MNRAS 438 (2014) 2683-2693
Refereed paper. 4th June.
The excursion set approach in non-Gaussian random fields
Marcello Musso and Ravi K. Sheth
[Abstract] [PDF] [Journal] Pubished in MNRAS 439 (2014) 3051-3063
Refereed paper. 6th May.
Exact Mapping between Tensor and Most General Scalar Power Spectra
Jose Beltran Jimenez, Marcello Musso and Christophe Ringeval
[Abstract] [PDF] [Journal] Published in Phys. Rev. D88, 043524 (2013)
Refereed paper. 15th March.


Scale dependent halo bias in the excursion set approach
Marcello Musso, Aseem Paranjape and Ravi K. Sheth
[Abstract] [PDF] [Journal] Published in MNRAS 427 (2012) 3145-3158
Refereed paper. 17th May.
One step beyond: The excursion set approach with correlated steps
Marcello Musso and Ravi K. Sheth
[Abstract] [PDF] [Journal] Published in MNRAS 423 (2012) L102-L106
Refereed paper. 23rd January.

[UCLouvain] - [SST] [IRMP] - [SC]
Contact : Jérôme de Favereau
Job opportunities Post-doctoral positions in BSM phenomenology at colliders and in astrophysics
Postdoctoral Position on advanced analysis techniques applied to the CMS di-Higgs study
Post-doctoral positions in collider phenomenology and particle astrophysics
EOS be.h : 10 PhD positions