371 citations · 480 across the 4 of their papers we have counts for
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Collapse of the random phase approximation: examples and counter-examples from the shell model
Calvin W. Johnson, Ionel Stetcu
The Hartree-Fock approximation to the many-fermion problem can break exact symmetries, and in some cases by changing a parameter in the interaction one can drive the Hartree-Fock m…
Effective operators from exact many-body renormalization
A. F. Lisetskiy, M. K. G. Kruse, B. R. Barrett +3
We construct effective two-body Hamiltonians and E2 operators for the p-shell by performing ab initio no-core shell model (NCSM) calculations for A=5 and A=6 nuclei and…
Recent developments in no-core shell-model calculations
Petr Navratil, Sofia Quaglioni, Ionel Stetcu +1
We present an overview of recent results and developments of the no-core shell model (NCSM), an ab initio approach to the nuclear many-body problem for light nuclei. In this approa…
Ab-initio shell model with a core
A. F. Lisetskiy, B. R. Barrett, M. K. G. Kruse +3
We construct effective 2- and 3-body Hamiltonians for the p-shell by performing 12\hbarΩab initio no-core shell model (NCSM) calculations for A=6 and 7 nuclei and explicitly projec…
No-core shell model in an effective-field-theory framework
I. Stetcu, B. R. Barrett, U. van Kolck
We present a new approach to the construction of effective interactions suitable for many-body calculations by means of the no-core shell model (NCSM). We consider an effective fie…