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Few-Body Systems

, 60:31 | Cite as

Nuclear Electromagnetic Currents to Fourth Order in Chiral Effective Field Theory

  • H. KrebsEmail author
  • E. Epelbaum
  • U.-G. Meißner
Article
  • 39 Downloads
Part of the following topical collections:
  1. Ludwig Faddeev Memorial Issue

Abstract

Recently, we have shown that the continuity equation for the nuclear vector and axial current operators acquires additional terms if the latter depend on the energy transfer. We analyze in detail the electromagnetic single-nucleon four-current operators and verify the validity of the modified continuity equation for all one- and two-nucleon contributions up to fourth order in the chiral expansion. We also derive, for the first time, the leading contribution to the three-nucleon charge operator which appears at this order. Our study completes the derivation of the electroweak nuclear currents to fourth order in the chiral expansion.

Notes

Acknowledgements

This work was supported by DFG (SFB/TR 110, “Symmetries and the Emergence of Structure in QCD”) and the BMBF (Grant No. 05P15PCFN1). Further support was provided by the Chinese Academy of Sciences (CAS) President’s International Fellowship Initiative (PIFI) (Grant No. 2018DM0034) and by VolkswagenStiftung (Grant No. 93562).

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Fakultät für Physik und Astronomie, Institut für Theoretische Physik IIRuhr-Universität BochumBochumGermany
  2. 2.Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical PhysicsUniversität BonnBonnGermany
  3. 3.Institute for Advanced Simulation, Institut für Kernphysik, and Jülich Center for Hadron PhysicsForschungszentrum JülichJülichGermany
  4. 4.Tbilisi State UniversityTbilisiGeorgia

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