Abstract
This is a collection of perspective pieces contributed by the participants of the Institute for 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 the reflections of a vibrant and engaged community of researchers on the status of theoretical research in low-energy nuclear physics, the challenges ahead, and new ideas and strategies to make progress in nuclear structure and reaction physics, effective field theory, lattice QCD, quantum information, and quantum computing. The contributed pieces solely reflect the perspectives of the respective authors and do not represent the viewpoints of the Institute for Nuclear theory or the organizers of the program.
| Original language | English |
|---|---|
| Article number | 67 |
| Journal | Few-Body Systems |
| Volume | 63 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 2022 |
| Externally published | Yes |
Funding
Constructing precision nuclear forces from chiral effective field theory (EFT) requires good control over subleading orders in the chiral expansion, in particular, of the low-energy constants (LECs) that parameterize degrees of freedom beyond the range of validity of the EFT. While some of the LECs can be determined from other observables, there are many cases in which this is not possible, leaving ultimately lattice QCD (LQCD) as the tool of choice. Here, we describe some of the recent developments and benchmarks of this program. Acknowledgements: Support by the Swiss National Science Foundation (Project No. PCEFP2_181117) is gratefully acknowledged. Z.D. acknowledges support from the the U.S.Department of Energy’s (DOE’s) Office of Science Early Career Award DE-SC0020271, Alfred P. Sloan foundation, and Maryland Center for Fundamental Physics at the University of Maryland, College Park. A.E. acknowledges support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 758027) and the Swedish Research Council project grant (Grant agreement No. 2020-05127). J.D.H. acknowledges support from the Natural Sciences and Engineering Research Council of Canada uunder grants SAPIN-2018-00027, RGPAS-2018-522453, and the Arthur B. McDonald Canadian Astroparticle Physics Research Institute. I.T. was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract No. DE-AC52-06NA25396, and by the U.S. Department of Energy, Office of Science, Office of Advanced Scientific Computing Research, Scientific Discovery through Advanced Computing (SciDAC) NUCLEI program. I consider the challenges we have been facing in theoretical nuclear physics can be mainly categorized into two aspects: (i) The challenge in computing complex systems. (ii) The challenge in search for a better theoretical foundation. Breakthrough in these two directions are both important and should complement each other in order to make true progress. Fortunately, there are several important achievements in both directions presented in this workshop. In the following I highlight two breakthroughs (one in each direction) and one problem which requires further investigations in this workshop. Acknowledgements : This material is based upon works supported by the Czech Science Foundation GACR grant 19-19640S and 22-14497S, e-Infrastruktura CZ (e-INFRA CZ LM2018140), and IT4Innovations at Czech National Supercomputing Center under project number OPEN-24-21 1892. Acknowledgements: We are grateful to Saori Pastore for useful discussions. We thank the Institute for Nuclear Theory at the University of Washington for its stimulating research environment during the INT-21-1b program “Nuclear Forces for Precision Nuclear Physics,” which was supported in part by the INT’s U.S. Department of Energy grant No. DE-FG02-00ER41132. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Award Numbers DE-SC0019647 (TRR and MRS) and DE-FG02-05ER41368 (RPS). Acknowledgements: We are grateful to the former and current members of the NPLQCD Collaboration, especially Martin Savage, for many insightful discussions and valuable collaborations around the topics discussed in this piece. ZD acknowledges support from the Alfred P. Sloan fellowship, Maryland Center for Fundamental Physics at the University of Maryland, College Park, and the U.S.Department of Energy’s (DOE’s) Office of Science Early Career Award DE-SC0020271. WD and PES are supported in part by the U.S. DOE’s Office of Science, Office of Nuclear Physics under grant Contract DE-SC0011090. WD is further supported in part by the SciDAC4 award DE-SC0018121, and within the framework of the TMD Topical Collaboration of the U.S. DOE’s Office of Science, Office of Nuclear Physics. PES is additionally supported by the National Science Foundation under EAGER grant 2035015, by the U.S. DOE’s Office of Science Early Career Award DE-SC0021006, by a NEC research award, and by the Carl G and Shirley Sontheimer Research Fund. WD and PES are supported by the National Science Foundation under Cooperative Agreement PHY-2019786 (The NSF AI Institute for Artificial Intelligence and Fundamental Interactions, http://iaifi.org/). MI is supported in part by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Science Center, and in part by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, InQubator for Quantum Simulation (IQuS) through the Quantum Horizons: QIS Research and Innovation for Nuclear Science, under Award Number DOE (NP) Award DE-SC0020970. AP acknowledges financial support from the State Agency for Research of the Spanish Ministry of Science and Innovation through the "Unit of Excellence María de Maeztu 2020-2023" award to the Institute of Cosmos Sciences (CEX2019-000918-M), the European FEDER funds under the contract PID2020-118758GB-I00, and from the EU STRONG-2020 project under the program H2020-INFRAIA-2018-1, grant agreement No. 824093. This piece has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. Eigenvector continuation has recently emerged as a powerful tool that can reduce the computational load involved in solving the quantum many-body problem [–]. Acknowledgements : The perspectives presented here are informed by research supported by the U.S. Department of Energy under grants DESC0013365 and DE-SC0021152 (DL) and DE-FG02-93ER-40756 (DRP) and the Nuclear Computational Low-Energy Initiative (NUCLEI) SciDAC-4 project, DE-SC0018083 (DL). Acknowledgements: JRG acknowledges support from the Simons Foundation through the Simons Bridge for Postdoctoral Fellowships scheme. ADH is supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics through the Contract No. DE-SC0012704 and within the framework of Scientific Discovery through Advance Computing (SciDAC) award “Computing the Properties of Matter with Leadership Computing Resources.” RAB is supported in part by U.S. Department of Energy Contract No. DE-AC05-06OR23177, under which Jefferson Science Associates, LLC, manages and operates Jefferson Lab, and is partly supported by the U.S. Department of Energy Contract No. DE-SC0019229. ANN is supported by the U.S. National Science Foundation CAREER Award PHY-2047185. The work of AWL is supported in part by U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Awards No. DE-AC02-05CH11231. Acknowledgements: It is a pleasure to thank Zohreh Davoudi, Andreas Ekström, Jason Holt and Ingo Tews for making this wonderful INT program possible. We are also grateful to our long-standing collaborator Ulf-G. Meißner as well as to Patrick Reinert, Xiu-Lei Ren and the LENPIC Collaboration for sharing their insights into the discussed topics. This work was supported in part by BMBF (Grant No. 05P18PCFP1), by DFG and NSFC through funds provided to the Sino-German CRC 110 “Symmetries and the Emergence of Structure in QCD" (NSFC Grant No. 12070131001, Project-ID 196253076 - TRR 110), by DFG (Grant No. 426661267) by the ERC AdG NuclearTheory (Grant No. 885150), and by the Georgian Shota Rustaveli National Science Foundation (Grant No. FR17-354).