Search Results - "Hergert, H."

In-medium similarity renormalization group for closed and open-shell nuclei by Hergert, H

“…We present a pedagogical introduction to the in-medium similarity renormalization group (IMSRG) framework for ab initio calculations of nuclei. The IMSRG…”
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The In-Medium Similarity Renormalization Group: A novel ab initio method for nuclei by Hergert, H., Bogner, S.K., Morris, T.D., Schwenk, A., Tsukiyama, K.

“…We present a comprehensive review of the In-Medium Similarity Renormalization Group (IM-SRG), a novel ab initio method for nuclei. The IM-SRG employs a…”
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Ab Initio Calculation of the Contact Operator Contribution in the Standard Mechanism for Neutrinoless Double Beta Decay by Wirth, R, Yao, J M, Hergert, H

“…Starting from chiral nuclear interactions, we evaluate the contribution of the leading-order contact transition operator to the nuclear matrix element (NME) of…”
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Nonperturbative shell-model interactions from the in-medium similarity renormalization group by Bogner, S K, Hergert, H, Holt, J D, Schwenk, A, Binder, S, Calci, A, Langhammer, J, Roth, R

“…We present the first ab initio construction of valence-space Hamiltonians for medium-mass nuclei based on chiral two- and three-nucleon interactions using the…”
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Ab Initio calculations of even oxygen isotopes with chiral two-plus-three-nucleon interactions by Hergert, H, Binder, S, Calci, A, Langhammer, J, Roth, R

“…We formulate the in-medium similarity renormalization group (IM-SRG) for open-shell nuclei using a multireference formalism based on a generalized Wick theorem…”
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Bogoliubov many-body perturbation theory for open-shell nuclei by Tichai, A., Arthuis, P., Duguet, T., Hergert, H., Somà, V., Roth, R.

“…A Rayleigh–Schrödinger many-body perturbation theory (MBPT) approach is introduced by making use of a particle-number-breaking Bogoliubov reference state to…”
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Ab Initio Treatment of Collective Correlations and the Neutrinoless Double Beta Decay of 48Ca by Yao, J M, Bally, B, Engel, J, Wirth, R, Rodríguez, T R, Hergert, H

“…Working with Hamiltonians from chiral effective field theory, we develop a novel framework for describing arbitrary deformed medium-mass nuclei by combining…”
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Nucleus-Dependent Valence-Space Approach to Nuclear Structure by Stroberg, S R, Calci, A, Hergert, H, Holt, J D, Bogner, S K, Roth, R, Schwenk, A

“…We present a nucleus-dependent valence-space approach for calculating ground and excited states of nuclei, which generalizes the shell-model in-medium…”
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ADG: automated generation and evaluation of many-body diagrams by Tichai, A, Arthuis, P, Hergert, H, Duguet, T

“…The goal of the present paper is twofold. First, a novel expansion many-body method applicable to superfluid open-shell nuclei, the so-called Bogoliubov…”
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Radii and Binding Energies in Oxygen Isotopes: A Challenge for Nuclear Forces by Lapoux, V, Somà, V, Barbieri, C, Hergert, H, Holt, J D, Stroberg, S R

“…We present a systematic study of both nuclear radii and binding energies in (even) oxygen isotopes from the valley of stability to the neutron drip line. Both…”
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Nucleus-Dependent Valence-Space Approach to Nuclear Structure by Stroberg, S. R., Calci, A., Hergert, H., Holt, J. D., Bogner, S. K., Roth, R., Schwenk, A.

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Treatment of the intrinsic Hamiltonian in particle-number nonconserving theories by Hergert, H., Roth, R.

“…We discuss the implications of using an intrinsic Hamiltonian in theories without particle-number conservation, e.g., the Hartree–Fock–Bogoliubov…”
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Nuclear structure based on correlated realistic nucleon–nucleon potentials by Roth, R., Neff, T., Hergert, H., Feldmeier, H.

“…We present a novel scheme for nuclear structure calculations based on realistic nucleon–nucleon potentials. The essential ingredient is the explicit treatment…”
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Nonobservable nature of the nuclear shell structure: Meaning, illustrations, and consequences by Duguet, T., Hergert, H., Holt, J. D., Somà, V.

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Isospin properties of electric dipole excitations in 48Ca by Derya, V., Savran, D., Endres, J., Harakeh, M.N., Hergert, H., Kelley, J.H., Papakonstantinou, P., Pietralla, N., Ponomarev, V.Yu, Roth, R., Rusev, G., Tonchev, A.P., Tornow, W., Wörtche, H.J., Zilges, A.

“…Two different experimental approaches were combined to study the electric dipole strength in the doubly-magic nucleus 48Ca below the neutron threshold…”
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Low-energy dipole strength and the critical case of 48Ca by Papakonstantinou, P., Hergert, H., Ponomarev, V.Yu, Roth, R.

“…Recent theoretical work has not led to a consensus regarding the nature of the low-energy E1 strength in the 40,44,48Ca isotopes, for which high-resolution…”
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Nuclear Structure in the UCOM Framework: From Realistic Interactions to Collective Excitations by Roth, R., Hergert, H., Paar, N., Papakonstantinou, P.

“…The Unitary Correlation Operator Method (UCOM) provides a means for nuclear structure calculations starting from realistic NN potentials. The dominant…”
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Unitary correlation operator method and similarity renormalization group: Connections and differences by Roth, R., Reinhardt, S., Hergert, H.

“…We discuss relations and differences between two methods for the construction of unitarily transformed effective interactions, the Similarity Renormalization…”
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Ab Initio Treatment of Collective Correlations and the Neutrinoless Double Beta Decay of Ca 48 by Yao, J. M., Bally, B., Engel, J., Wirth, R., Rodríguez, T. R., Hergert, H.

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Unitary correlation operator method from a similarity renormalization group perspective by Hergert, H., Roth, R.

“…We investigate how the unitary correlation operator method (UCOM), developed to explicitly describe the strong short-range central and tensor correlations…”
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