In-Medium Similarity Renormalization Group For Nuclei
- Department of Physics, University of Tokyo, Hongo, Tokyo, 113-0033 (Japan)
- National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48844 (United States)
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany)
We present a new ab initio method that uses similarity renormalization group (SRG) techniques to continuously diagonalize nuclear many-body Hamiltonians. In contrast with applications of the SRG to two- and three-nucleon interactions in free space, we perform the SRG evolution ''in medium'' directly in the A-body system of interest. The in-medium approach has the advantage that one can approximately evolve 3,...,A-body operators using only two-body machinery based on normal-ordering techniques. The method is nonperturbative and can be tailored to problems ranging from the diagonalization of closed-shell nuclei to the construction of effective valence-shell Hamiltonians and operators. We present first results for the energies of {sup 4}He, {sup 16}O, and {sup 40}Ca, which have accuracies comparable to coupled-cluster calculations.
- OSTI ID:
- 21538383
- Journal Information:
- Physical Review Letters, Vol. 106, Issue 22; Other Information: DOI: 10.1103/PhysRevLett.106.222502; (c) 2011 American Institute of Physics; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CALCIUM 40
HAMILTONIANS
HELIUM 4
INTERACTIONS
NUCLEONS
OXYGEN 16
RENORMALIZATION
TWO-BODY PROBLEM
VALENCE
ALKALINE EARTH ISOTOPES
BARYONS
CALCIUM ISOTOPES
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MANY-BODY PROBLEM
MATHEMATICAL OPERATORS
NUCLEI
OXYGEN ISOTOPES
QUANTUM OPERATORS
STABLE ISOTOPES