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Contact

Name

Marcello Musso

Position

Former member
Member from January 2012 to December 2014

Projects

Research directions:

Cosmology and General Relativity

Non-active projects

Cosmic inflation

Christophe Ringeval

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

André Füzfa, Christophe Ringeval

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.

Non-Gaussianity

Christophe Ringeval

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 IRMP

All my publications on Inspire

Number of publications as IRMP member: 7
Last 5 publications

2014

CP3-14-10: On the Markovian assumption in the excursion set approach: the approximation of Markov Velocities

Marcello Musso and Ravi K. Sheth

[Abstract] [PDF] [Journal] [Dial]
Published in MNRAS 443 (2014) 1601-1613
Refereed paper. February 3.

CP3-14-05: Stochasticity in halo formation and the excursion set approach

Marcello Musso and Ravi K. Sheth

[Abstract] [PDF] [Journal] [Dial]
Published in MNRAS 442 (2014) 401-405
Refereed paper. January 15.

2013

CP3-13-28: The importance of stepping up in the excursion set approach

Marcello Musso and Ravi K. Sheth

[Abstract] [PDF] [Journal] [Dial]
Published in MNRAS 438 (2014) 2683-2693
Refereed paper. June 4.

CP3-13-16: The excursion set approach in non-Gaussian random fields

Marcello Musso and Ravi K. Sheth

[Abstract] [PDF] [Journal] [Dial]
Pubished in MNRAS 439 (2014) 3051-3063
Refereed paper. May 6.

CP3-13-09: Exact Mapping between Tensor and Most General Scalar Power Spectra

Jose Beltran Jimenez, Marcello Musso and Christophe Ringeval

[Abstract] [PDF] [Journal] [Dial]
Published in Phys. Rev. D88, 043524 (2013)
Refereed paper. March 15.

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