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Making predictions using χEFT

Boris Carlsson (Institutionen för fundamental fysik)
Göteborg : Chalmers University of Technology, 2015. - 89 s.
[Licentiatavhandling]

In this thesis we explore the merits of chiral effective field theory (χEFT) as a model for low-energy nuclear physics. χEFT is an effective field theory based on quantum chromo dynamics (QCD) describing low-energy interactions of nucleons and pions. We estimate the inherent uncertainties of χEFT and the accompanying methods used to compute observables in order to test the predictive power of the model. We use experimental pion-nucleon, nucleon- nucleon and few-nucleon data to perform a simultaneous fit of the low-energy constants in χEFT. This results in small statistical uncertainties in the model. The results show a clear order-by-order improvement of χEFT with the systematical model error dominating the total error budget.

Nyckelord: nuclear physics, χEFT, uncertainty quantification, NN scattering, few-nucleon physics



Denna post skapades 2015-08-19. Senast ändrad 2015-09-04.
CPL Pubid: 220844

 

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Institutioner (Chalmers)

Institutionen för fundamental fysik (2005-2015)

Ämnesområden

Lågenergifysik
Beräkningsfysik

Chalmers infrastruktur

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)

Examination

Datum: 2015-09-09
Tid: 13:00
Lokal: PJ-Salen, Fysikgården 1, Origo vån 4, Chalmers
Opponent: Dr. Kai Hebeler, TU Darmstadt, Germany