Missions

The candidate will contribute to the development of models for the transport of hard probes within the EPOS4 environment, in particular the model for the evolution of jets within the quark gluon plasma (EPOS4HP) with the researchers involved. He/She will contribute to the production of theoretical results, their analysis and any adaptations to the model that may result from comparing these results with experimental data.

Activités

The candidate will carry out the following activities:
- reading and understanding theoretical physics articles, in particular with a view to deriving equivalent computer algorithms
- develop and/or adapt a physical modem and/or a Monte Carlo type code in the field of nuclear physics
- integrating software into C++/Fortran code, taking into account software quality aspects
- test and validate code by comparing it with theoretical reference models
- analysis of results from a simulation code
- scientific communication (internal reports and presentations, journal articles, participation in workshops and conferences)

Compétences

The candidate must hold a PhD in hadronic/theoretical physics
The skills expected of the candidate are :
- hadronic or particle physics (theoretical and phenomenological approaches)
- numerical methods and programming (C++) and implementation of unit and global code validation tests
- reliability and ability to document its methods, particularly in the GIT environment
- adaptability
- the ability to communicate and promote your work, both orally and in writing
- ability to work as part of a team, including remotely
- fluency in written and spoken English

Contexte de travail

The theory group of SUBATECH is presently working on Jet-physics in proton-proton, proton-heavy ion and heavy ion - heavy ion collisions. This includes the development of the theory of the interaction of jets with the partonic environment as well as the implementation of
the jet physics in the EPOS4 event generator. A first result of these studies has been published (arXiv 2404.14579).

Jets are presently considered as one the most interesting probes to study the properties of the dense and hot matter created during a heavy ion collision. The first approaches allowed for a comparison of the transverse momentum spectra and the study of transport coefficients, like qhat. More recent studies focus on "intra-jet" observables, such as the jet shape. One of the dominant features is the angular broadening towards larger opening angles with respect to the jet axis. In order to make accurate predictions, it is imperative to accommodate in these studies as much as possible to the results of the underlying Quantum Chromo Dynamics (QCD), such as angular ordering and the interaction of jet partons with the quark gluon plasma (QGP). With an expertise in both, hard probes and the modeling of the hydrodynamic component of AA collisions, the Nantes theory group has addressed these topics in the last years.

The person's work will mainly be carried out within the theory team (Prof Aichelin, Caucal, Gossiaux and Werner), but also in collaboration with the "numerical modelling and software development" department.

Contraintes et risques

No particular constraints or risks.