Pionless Effective Field Theory: Building the Bridge Between Lattice Quantum Chromodynamics and Nuclear Physics

We analyze ground state properties of few-nucleons systems and ¹⁶O 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, ¹⁶O appears to be unstable against breakup into four ⁴He for the quark masses considered.

Grantor dc:publisher

Università degli studi di Trento

Year dc:date

2017

Author dc:creator

• Contessi, Lorenzo

Contributors dc:contributor

• Pederiva, Francesco

• Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
• Settore FIS/04 - Fisica Nucleare e Subnucleare

Statement dc:rights

• info:eu-repo/semantics/openAccess
• license:Tutti i diritti riservati (All rights reserved)
• license uri:iris.PRI01

Language dc:language

eng

Identifier

http://dx.doi.org/10.15168/11572_368105
10.15168/11572_368105

OAI identifier oai:identifier

oai:iris.unitn.it:11572/368105