2026-09-21T17:07:11Zhttps://iris.unitn.it/oai/requestoai:iris.unitn.it:11572/3681052026-04-03T00:50:25Zcom_11572_237821com_11572_101871col_11572_237822ou_ou00011
Pionless Effective Field Theory: Building the Bridge Between Lattice Quantum Chromodynamics and Nuclear Physics
Contessi, Lorenzo
Contessi, Lorenzo
Pederiva, Francesco
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
Settore FIS/04 - Fisica Nucleare e Subnucleare
We analyze ground state properties of few-nucleons systems and $^{16}$O using \eftnopi (Pionless Effective Field Theory) at \ac{LO}. This is the first time the theory is extended to many-body nuclear systems. The free constants of the interaction are fitted using both experimental data and \ac{LQCD} results. The nuclear many-body Schr\"odinger equation is solved by means of the Auxiliary Field Diffusion Monte Carlo method. A linear optimization procedure has been used to recover the correct structure of the ground state wavefunction. {\eftnopi} as revealed to be an appropriate theory to describe light nuclei both in nature, and in the case where heavier quarks are used in order to make \ac{LQCD} calculation feasible. Our results are in good agreement with experiments and \ac{LQCD} predictions. In our \ac{LO} calculation, $^{16}$O appears to be unstable against breakup into four $^4$He for the quark masses considered.
2017
info:eu-repo/semantics/doctoralThesis
https://hdl.handle.net/11572/368105
http://dx.doi.org/10.15168/11572_368105
10.15168/11572_368105
eng
firstpage:1
lastpage:139
numberofpages:139
info:eu-repo/semantics/openAccess
Università degli studi di Trento
place:TRENTO
license:Tutti i diritti riservati (All rights reserved)
license:Tutti i diritti riservati (All rights reserved)
license uri:iris.PRI01