Work

Neutron Matter at Next-to-Next-to-Next-to-Leading Order in Chiral Effective Field Theory

Year: 2013

Type: article

Abstract: Neutron matter presents a unique system for chiral effective field theory because all many-body forces among neutrons are predicted to next-to-next-to-next-to-leading order (N(3)LO). We present the first complete N(3)LO calculation of the neutron matter energy. This includes the subleading three-nucleon forces for the first time and all leading four-nucleon forces. We find relatively large contributions from N(3)LO three-nucleon forces. Our results provide constraints for neutron-rich matter in astrophysics with controlled theoretical uncertainties.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.110.032504

Authors: I. Tews, T. Krüger, K. Hebeler, A. Schwenk

Institutions: GSI Helmholtz Centre for Heavy Ion Research, Technische Universität Darmstadt, ExtreMe Matter Institute EMMI, The Ohio State University

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Deutsche Forschungsgemeinschaft, Emberi Eroforrások Minisztériuma

Awards: G1434940490, Research in Strong-Interaction Theory