Benchmark calculations of infinite neutron matter with realistic two- and three-nucleon potentials

Lovato, A.; Bombaci, I.; Logoteta, D.; Piarulli, M.; Wiringa, R. B.

doi:10.48550/arxiv.2202.10293

Cited by 2 publications

(3 citation statements)

References 111 publications

(184 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, Lovato et al (2022), have carried out extensive analysis of the EOS of zero-temperature PNM, aimed at comparing different nuclear Hamiltonians and computational techniques. The results of this study, showing that the AV6P+UIX Hamiltonian yields results in close agreement with those obtained from the full AV18+UIX up to B = 2 0 , strongly supports the use of this somewhat simplified model to describe nuclear dynamics at supranuclear density.…”

Section: Discussionmentioning

confidence: 99%

Modeling Neutron Star Matter in the Age of Multimessenger Astrophysics

Benhar¹,

Lovato²,

Camelio³

2022

Preprint

View full text Add to dashboard Cite

The interpretation of the available and forthcoming data obtained from multimessenger astrophysical observations-potentially providing unprecedented access to neutron star properties-will require the development of novel, accurate theoretical models of dense matter. Of great importance, in this context, will be the capability to devise a description of thermal effects applicable to the study of quantities other than the equation of state, such as the transport coefficients and the neutrino mean free path in the nuclear medium. The formalism based on correlated basis states and the cluster expansion technique has been previously employed to derive a well-behaved effective interaction-suitable for use in standard perturbation theory-from a state-of-the-art nuclear Hamiltonian, including phenomenological twoand three-nucleon potentials. Here, we provide a comprehensive and self-contained account of the extension of this approach to the treatment of finite-temperature effects, and report the results of numerical calculations of a number of properties of nuclear matter with arbitrary neutron excess and temperature up to 50 MeV.

show abstract

Section: Discussionmentioning

confidence: 99%

Modeling Neutron Star Matter in the Age of Multimessenger Astrophysics

Benhar¹,

Lovato²,

Camelio³

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Nevertheless, some prominent challenges remain open. As a chief example, most of existing nuclear Hamiltonians cannot simultaneously describe light nuclear systems and the equation of state of infinite nucleonic matter [7,8]. Exhaustive tests of nuclear interactions require many-body methods that are suitable to retain the complexity of nuclear dynamics at short distances [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Exhaustive tests of nuclear interactions require many-body methods that are suitable to retain the complexity of nuclear dynamics at short distances [9,10]. An accurate description of the latter is also critical to reproduce exclusive lepton-nucleus scattering cross sections [11][12][13], for the calculation neutrinoless double-beta decay matrix elements [14], and for studying neutron-star matter in the high-density regime [8,9,15].…”

Section: Introductionmentioning

confidence: 99%

Hidden-nucleons neural-network quantum states for the nuclear many-body problem

Lovato,

Adams,

Carleo

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

We generalize the hidden-fermion family of neural network quantum states to encompass both continuous and discrete degrees of freedom and solve the nuclear many-body Schrödinger equation in a systematically improvable fashion. We demonstrate that adding hidden nucleons to the original Hilbert space considerably augments the expressivity of the neural-network architecture compared to the Slater-Jastrow ansatz. The benefits of explicitly encoding in the wave function point symmetries such as parity and time-reversal are also discussed. Leveraging on improved optimization methods and sampling techniques, the hidden-nucleon ansatz achieves an accuracy comparable to the numerically-exact hyperspherical harmonic method in light nuclei and to the auxiliary field diffusion Monte Carlo in 16 O. Thanks to its polynomial scaling with the number of nucleons, this method opens the way to highly-accurate quantum Monte Carlo studies of medium-mass nuclei.

show abstract

Benchmark calculations of infinite neutron matter with realistic two- and three-nucleon potentials

Cited by 2 publications

References 111 publications

Modeling Neutron Star Matter in the Age of Multimessenger Astrophysics

Modeling Neutron Star Matter in the Age of Multimessenger Astrophysics

Hidden-nucleons neural-network quantum states for the nuclear many-body problem

Contact Info

Product

Resources

About