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Theoretical Particle and Nuclear Physics

Prof. Nora Brambilla

Research Field

Our research is focused on Effective Field Theories (EFTs) and Renormalization Techniques with applications in Particle Physics and Hadronic/Nuclear Physics. Effective quantum field theories are the state-of-the-art tools for analyzing physical systems that contain many different energy or momentum scales. Such systems are the rule, rather than the exception, from the high-energy domain of Particle Physics to the low-energy domain of Nuclear Physics.

Specifically we construct and apply new effective field theories to deal with processes of strong interactions and QCD, Standard Model and beyond the Standard Model physics. At T30f we study non-relativistic effective field theories with applications to heavy-quark processes and quarkonium physics at accelerator experiments (BELLE, BESIII, LHC and PANDA experiments); EFTs for strong interactions at finite temperature and density with applications to processes taking place at heavy-ion experiments at RHIC and LHC, as well as in cosmological environments. Furthermore we work on high-order perturbative calculations in QCD with applications to precision determination of certain Standard Model parameters (quark masses, strong coupling constant) as well as non-perturbative and computational methods in field theory with application to non-perturbative QCD and the confinement mechanism.

Address/Contact

James-Franck-Str. 1/I
85748 Garching b. München

Members of the Research Group

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Offers for Theses in the Group

Open Quantum System, Linblad equation and decoherence in Quantum Mechanics
We will study a two levels atomic system in an external electromagnetic field using open quantum system and obtaining a master equation of the Linblad type. We will solve the equation and compare to the results of time dependent perturbation theory. We will use these results to study Lindblad Decoherence in Atomic Clocks (Steve Weinberg Phys. Rev. A 94, 042117 (2016). Such results can be generalized to considering in the same framework a chromoelectric dipole interaction between quarkonium color octet and singlet states in QCD, the theory of strong interaction and can describe the nonequilibrium evolution of quarkonium in heavy ion collsions at experiments at the Large Hadron Collider at CERN. Prerequisites: Quantum Mechanics I and II
suitable as
  • Bachelor’s Thesis Physics
Supervisor: Nora Brambilla
Quarkonium at non-zero isospin density
We study the change of quarkonium bound states energies in the presence of a medium of nonzero isospin density using results from Lattice QCD and Effective field theories and solving the Schroedinger equation with the corresponding potentials. We will investigate how the medium induces a reduction of the quarkonium energies and if the reduction of the quarkonium energies becomes more pronounced as the heavy-quark mass is decreased, similar to the behaviour seen in two-colour QCD at non-zero quark chemical potential. In the process of our analysis, we will study the eta_b-pi and Upsilon-π scattering phase shifts are determined at low momentum. These findings are relevant for experiments at FAIR in Fermany and at the future Electron Ion Collider in US. Prerequisites: Quantum Mechanics I and II
suitable as
  • Bachelor’s Thesis Physics
Supervisor: Nora Brambilla

Current and Finished Theses in the Group

Dark Matter Bound States
Abschlussarbeit im Bachelorstudiengang Physik
Themensteller(in): Nora Brambilla
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