Nuclear Forces for Precision Nuclear Physics: A Collection of Perspectives

Tews, Ingo; Davoudi, Zohreh; Ekström, Andreas; Holt, J. D.; Becker, Kevin; Briceño, Raúl A.; Dean, D. J.; Detmold, William; Drischler, C.; Duguet, Thomas; Epelbaum, E.; Gasparyan, A. M.; Gegelia, J.; Green, Jeremy R.; Grießhammer, Harald W.; Hanlon, Andrew D.; Heinz, M.; Hergert, H.; Hoferichter, Martin; Illa, Marc; Kekejian, David; Kievsky, A.; König, S.; Krebs, H.; Launey, Kristina D.; Lee, Dean; Navrátil, Petr; Nicholson, Amy; Parreño, A.; Phillips, Daniel R.; Płoszajczak, M.; Ren, Xiu-Lei; Richardson, Thomas R.; Robin, Caroline; Sargsyan, G. H.; Savage, Martin J.; Schindler, Matthias R.; Shanahan, Phiala E.; Springer, Roxanne P.; Tichai, Alexander; Kolck, U. van; Wagman, Michael L.; Walker-Loud, André; Yang, Chieh-Jen; Zhang, Xilin

doi:10.1007/s00601-022-01749-x

Cited by 21 publications

(6 citation statements)

References 392 publications

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“…These properties make emulators effective interfaces for large expensive calculations, through which users can access sophisticated physical models at a minimum cost of computational resources and without specialized expertise, creating a more efficient workflow for nuclear science. As such, emulators can become a collaboration tool [33,34] that can catalyze new direct and indirect connections between different research areas and enable novel studies.…”

Section: Discussionmentioning

confidence: 99%

BUQEYE guide to projection-based emulators in nuclear physics

et al. 2023

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The BUQEYE collaboration (Bayesian Uncertainty Quantification: Errors in Your effective field theory) presents a pedagogical introduction to projection-based, reduced-order emulators for applications in low-energy nuclear physics. The term emulator refers here to a fast surrogate model capable of reliably approximating high-fidelity models. As the general tools employed by these emulators are not yet well-known in the nuclear physics community, we discuss variational and Galerkin projection methods, emphasize the benefits of offline-online decompositions, and explore how these concepts lead to emulators for bound and scattering systems that enable fast and accurate calculations using many different model parameter sets. We also point to future extensions and applications of these emulators for nuclear physics, guided by the mature field of model (order) reduction. All examples discussed here and more are available as interactive, open-source Python code so that practitioners can readily adapt projection-based emulators for their own work.

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Section: Discussionmentioning

confidence: 99%

BUQEYE guide to projection-based emulators in nuclear physics

et al. 2023

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“…A deeper question is whether the chiral and momentum expansions of chiral-EFT converge (and converge to what is observed in Nature). This question is open even for single baryons [84,97] and relatively light systems [98][99][100], and needs to be answered as the community moves beyond purely phenomenological approaches. LQCD input for the unknown LECs at successively higher orders can help resolve power-counting questions for LNV processes.…”

Section: Lattice Qcd and Eftmentioning

confidence: 99%

“…The next very few years will see stricter limits from experiments that are currently operating or under construction, such as LEGEND-200, CUORE, KamLAND-Zen 800, and SNO+. On a slightly longer time scale, ton-scale experiments [19][20][21][22][23][24] based on 76 Ge, 100 Mo, 136 Xe, and perhaps other isotopes will come online. The goal of these large experiments is the ability to detect any decay caused by the exchange of light Majorana neutrinos if the neutrino mass hierarchy is inverted (i.e.…”

Section: Introductionmentioning

confidence: 99%

Towards precise and accurate calculations of neutrinoless double-beta decay

Cirigliano

Davoudi²,

Engel³

et al. 2022

J. Phys. G: Nucl. Part. Phys.

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We present the results of a National Science Foundation Project Scoping Workshop, the purpose of which was to assess the current status of calculations for the nuclear matrix elements governing neutrinoless double-beta decay and determine if more work on them is required. After reviewing important recent progress in the application of effective field theory, lattice quantum chromodynamics, and ab initio nuclear-structure theory to double-beta decay, we discuss the state of the art in nuclear-physics uncertainty quantification and then construct a roadmap for work in all these areas to fully complement the increasingly sensitive experiments in operation and under development. The roadmap includes specific projects in theoretical and computational physics as well as the use of Bayesian methods to quantify both intra- and inter-model uncertainties. The goal of this ambitious program is a set of accurate and precise matrix elements, in all nuclei of interest to experimentalists, delivered together with carefully assessed uncertainties. Such calculations will allow crisp conclusions from the observation or non-observation of neutrinoless double-beta decay, no matter what new physics is at play.

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“…[2] and references therein]. To achieve this, it is imperative to utilize high-precision nuclear forces that accurately describe nuclear correlations, from short-to long-range correlations, as well as to quantify uncertainties that arise from the nuclear force and the controlled approximations in solving the many-body Schrödinger equation [3]. Such developments use statistical tools, including, for example, Bayesian analysis [4], global sensitivity methods [5], and uncertainty estimates based on regression [6,7], that sometimes require a large number of computationally intensive calculations which often poses a challenge.…”

Section: Introductionmentioning

confidence: 99%

Ab initio symmetry-adapted emulator for studying emergent collectivity and clustering in nuclei

et al. 2023

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We discuss emulators from the ab initio symmetry-adapted no-core shell-model framework for studying the formation of alpha clustering and collective properties without effective charges. We present a new type of an emulator, one that utilizes the eigenvector continuation technique but is based on the use of symplectic symmetry considerations. This is achieved by using physically relevant degrees of freedom, namely, the symmetry-adapted basis, which exploits the almost perfect symplectic symmetry in nuclei. Specifically, we study excitation energies, point-proton root-mean-square radii, along with electric quadrupole moments and transitions for 6Li and 12C. We show that the set of parameterizations of the chiral potential used to train the emulators has no significant effect on predictions of dominant nuclear features, such as shape and the associated symplectic symmetry, along with cluster formation, but slightly varies details that affect collective quadrupole moments, asymptotic normalization coefficients, and alpha partial widths up to a factor of two. This makes these types of emulators important for further constraining the nuclear force for high-precision nuclear structure and reaction observables.

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Nuclear Forces for Precision Nuclear Physics: A Collection of Perspectives

Cited by 21 publications

References 392 publications

BUQEYE guide to projection-based emulators in nuclear physics

BUQEYE guide to projection-based emulators in nuclear physics

Towards precise and accurate calculations of neutrinoless double-beta decay

Ab initio symmetry-adapted emulator for studying emergent collectivity and clustering in nuclei

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