C
Christian Forssén
Researcher at Chalmers University of Technology
Publications - 121
Citations - 3494
Christian Forssén is an academic researcher from Chalmers University of Technology. The author has contributed to research in topics: Ab initio & Effective field theory. The author has an hindex of 31, co-authored 119 publications receiving 2967 citations. Previous affiliations of Christian Forssén include Lawrence Livermore National Laboratory & University of Tennessee.
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Journal ArticleDOI
Accurate nuclear radii and binding energies from a chiral interaction
Andreas Ekström,Andreas Ekström,Gustav R. Jansen,Gustav R. Jansen,K. A. Wendt,K. A. Wendt,Gaute Hagen,Gaute Hagen,Thomas Papenbrock,Thomas Papenbrock,B. D. Carlsson,Christian Forssén,Christian Forssén,Christian Forssén,Morten Hjorth-Jensen,Morten Hjorth-Jensen,Petr Navrátil,Witold Nazarewicz,Witold Nazarewicz,Witold Nazarewicz +19 more
TL;DR: In this paper, two-nucleon and three-Nucleon forces from chiral effective field theory are optimized simultaneously to low-energy nucleon-Nuclear scattering data, as well as binding energies and radii of few nucleon systems and selected isotopes of carbon and oxygen.
Journal ArticleDOI
Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order
Andreas Ekström,Andreas Ekström,G. Baardsen,Christian Forssén,Gaute Hagen,Gaute Hagen,Morten Hjorth-Jensen,Morten Hjorth-Jensen,Gustav R. Jansen,Gustav R. Jansen,Ruprecht Machleidt,Witold Nazarewicz,Witold Nazarewicz,Witold Nazarewicz,Thomas Papenbrock,Thomas Papenbrock,Jason Sarich,Stefan M. Wild +17 more
TL;DR: It is demonstrated that many aspects of nuclear structure can be understood in terms of this nucleon-n nucleon interaction, without explicitly invoking three-nucleon forces.
Journal ArticleDOI
Neutron and weak-charge distributions of the 48Ca nucleus
Gaute Hagen,Gaute Hagen,Andreas Ekström,Andreas Ekström,Christian Forssén,Christian Forssén,Christian Forssén,Gustav R. Jansen,Gustav R. Jansen,Witold Nazarewicz,Witold Nazarewicz,Witold Nazarewicz,Thomas Papenbrock,Thomas Papenbrock,K. A. Wendt,K. A. Wendt,Sonia Bacca,Sonia Bacca,Nir Barnea,B. D. Carlsson,C. Drischler,Kai Hebeler,Morten Hjorth-Jensen,Morten Hjorth-Jensen,Mirko Miorelli,Mirko Miorelli,Giuseppina Orlandini,Giuseppina Orlandini,Achim Schwenk,J. Simonis +29 more
TL;DR: In this article, an ab initio calculation of the neutron distribution of the Neutron-rich nucleus Ca-48 is presented, and it is shown that the difference between the radii of the neutrons and proton distributions is significantly smaller than previously thought.
Journal ArticleDOI
Uncertainty Analysis and Order-by-Order Optimization of Chiral Nuclear Interactions
B. D. Carlsson,Andreas Ekström,Andreas Ekström,Christian Forssén,Christian Forssén,Christian Forssén,D. Fahlin Strömberg,Gustav R. Jansen,Gustav R. Jansen,Oskar Lilja,M. Lindby,B. A. Mattsson,K. A. Wendt,K. A. Wendt +13 more
TL;DR: It is found that a simultaneous fit to different sets of data is critical to identify the optimal set of LECs, capture all relevant correlations, reduce the statistical uncertainty, and attain order-by-order convergence in chi EFT.
Journal ArticleDOI
Hyperfine structure of hydrogenlike thallium isotopes
Peter Beiersdorfer,S. B. Utter,K. L. Wong,José R. Crespo López-Urrutia,J.A. Britten,H. Chen,Clifford L. Harris,Robert S. Thoe,Daniel Thorn,Elmar Träbert,Martin G. H. Gustavsson,Christian Forssén,Ann-Marie Mårtensson-Pendrill +12 more
TL;DR: In this paper, the hyperfine splitting of the ground state of hydrogen-like Tl has been measured for the two stable isotopes using emission spectroscopy in the SuperEBIT electron-beam ion trap, giving $3858.30 and $3821.34, respectively.