Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Tichai, A."'
Autor:
Scalesi, Alberto, Duguet, Thomas, Demol, Pepijn, Frosini, Mikael, Somà, Vittorio, Tichai, Alexander
A strong effort will be dedicated in the coming years to extend the reach of ab initio nuclear-structure calculations to heavy doubly open-shell nuclei. In order to do so, the most efficient strategies to incorporate dominant many-body correlations a
Externí odkaz:
http://arxiv.org/abs/2406.03545
The recently proposed combination of the valence-space in-medium similarity renormalization group (VS-IMSRG) with the density matrix renormalization group (DMRG) offers a scalable and flexible many-body approach for strongly correlated open-shell nuc
Externí odkaz:
http://arxiv.org/abs/2402.18723
Recent developments in nuclear many-body theory enabled the description of open-shell medium-mass nuclei from first principles by exploiting the spontaneous breaking of symmetries within correlation expansion methods. Once combined with systematicall
Externí odkaz:
http://arxiv.org/abs/2307.15619
Autor:
Tichai, A., Arthuis, P., Hebeler, K., Heinz, M., Hoppe, J., Miyagi, T., Schwenk, A., Zurek, L.
Ab initio calculations for nuclei and nuclear matter are limited by the computational requirements of processing large data objects. In this work, we develop low-rank singular value decompositions for chiral three-nucleon interactions, which dominate
Externí odkaz:
http://arxiv.org/abs/2307.15572
Publikováno v:
Phys. Rev. C 109, 024311 (2024)
The development of emulators for the evaluation of many-body observables has gained increasing attention over the last years. In particular the framework of eigenvector continuation (EC) has been identified as a powerful tool when the Hamiltonian adm
Externí odkaz:
http://arxiv.org/abs/2302.08373
Publikováno v:
Phys. Rev. C 107, 024310 (2023)
Three-nucleon (3N) interactions are key for an accurate solution of the nuclear many-body problem. However, fully taking into account 3N forces constitutes a computational challenge and hence approximate treatments are commonly employed. The method o
Externí odkaz:
http://arxiv.org/abs/2211.16262
Autor:
Tichai, A., Knecht, S., Kruppa, A. T., Legeza, Ö., Moca, C. P., Schwenk, A., Werner, M. A., Zarand, G.
Publikováno v:
Phys. Lett. B 845, 138139 (2023)
We propose a novel many-body framework combining the density matrix renormalization group (DMRG) with the valence-space (VS) formulation of the in-medium similarity renormalization group. This hybrid scheme admits for favorable computational scaling
Externí odkaz:
http://arxiv.org/abs/2207.01438
Publikováno v:
Phys. Rev. C 106, 024320 (2022)
It was recently observed that chiral two-body interactions can be efficiently represented using matrix factorization techniques such as the singular value decomposition. However, the exploitation of these low-rank structures in a few- or many-body fr
Externí odkaz:
http://arxiv.org/abs/2205.10087
Autor:
Tews, Ingo, Davoudi, Zohreh, Ekström, Andreas, Holt, Jason D., Becker, Kevin, Briceño, Raúl, Dean, David J., Detmold, William, Drischler, Christian, Duguet, Thomas, Epelbaum, Evgeny, Gasparyan, Ashot, Gegelia, Jambul, Green, Jeremy R., Grießhammer, Harald W., Hanlon, Andrew D., Heinz, Matthias, Hergert, Heiko, Hoferichter, Martin, Illa, Marc, Kekejian, David, Kievsky, Alejandro, König, Sebastian, Krebs, Hermann, Launey, Kristina D., Lee, Dean, Navrátil, Petr, Nicholson, Amy, Parreño, Assumpta, Phillips, Daniel R., Płoszajczak, Marek, Ren, Xiu-Lei, Richardson, Thomas R., Robin, Caroline, Sargsyan, Grigor H., Savage, Martin, Schindler, Matthias R., Shanahan, Phiala E., Springer, Roxanne P., Tichai, Alexander, van Kolck, Ubirajara, Wagman, Michael L., Walker-Loud, André, Yang, Chieh-Jen, Zhang, Xilin
Publikováno v:
Few-Body Systems 63, 67 (2022)
This is a collection of perspective pieces contributed by the participants of the Institute of Nuclear Theory's Program on Nuclear Physics for Precision Nuclear Physics which was held virtually from April 19 to May 7, 2021. The collection represents
Externí odkaz:
http://arxiv.org/abs/2202.01105
Publikováno v:
Physics Letters B, Vol 855, Iss , Pp 138841- (2024)
The recently proposed combination of the valence-space in-medium similarity renormalization group (VS-IMSRG) with the density matrix renormalization group (DMRG) offers a scalable and flexible many-body approach for strongly correlated open-shell nuc
Externí odkaz:
https://doaj.org/article/16038eb646444005bae40c1b28ecd1cb