Quantum Monte Carlo Methods for Astrophysical Applications

Tews, Ingo

doi:10.3389/fphy.2020.00153

Title: Quantum Monte Carlo Methods for Astrophysical Applications

Journal Article · Thu May 14 00:00:00 EDT 2020 · Frontiers in Physics

DOI:https://doi.org/10.3389/fphy.2020.00153· OSTI ID:1659211

^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

In recent years, new astrophysical observations have provided a wealth of exciting input for nuclear physics. For example, the observations of two-solar-mass neutron stars put strong constraints on possible phase transitions to exotic phases in strongly interacting matter at high densities. Furthermore, the recent observation of a neutron-star merger in both the electromagnetic spectrum and gravitational waves has provided compelling evidence that neutron-star mergers are an important site for the production of extremely neutron-rich nuclei within the r-process. In the coming years, an abundance of new observations is expected, which will continue to provide crucial constraints on the nuclear physics of these events. To reliably analyze such astrophysical observations and extract information on nuclear physics, it is very important that a consistent approach to nuclear systems is used. Such an approach consists of a precise and accurate method to solve the nuclear many-body problem in nuclei and nuclear matter, combined with modern nuclear Hamiltonians that allow to estimate the theoretical uncertainties. Quantum Monte Carlo methods are ideally suited for such an approach and have been successfully used to describe atomic nuclei and nuclear matter. In this contribution, I will present a detailed description of Quantum Monte Carlo methods focusing on the application of these methods to astrophysical problems. In particular, I will discuss how to use Quantum Monte Carlo methods to describe nuclear matter of relevance to the physics of neutron stars.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001; AC02-05CH11231

OSTI ID:: 1659211

Report Number(s):: LA-UR-19-32577; TRN: US2203409

Journal Information:: Frontiers in Physics, Vol. 8; ISSN 2296-424X

Publisher:: Frontiers Research FoundationCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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Journal Article · Tue Jun 16 00:00:00 EDT 2020 · EPJ Web of Conferences (Online) · OSTI ID:1659211

Tews, Ingo

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