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Related papers: Do not forget the electrons: Extending moderately-…

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We analyze the behavior of (net-)proton number cumulants in central collisions of heavy ions across a broad collision energy range by utilizing hydrodynamic simulations. The calculations incorporate essential non-critical contributions to…

Nuclear Theory · Physics 2022-08-05 Volodymyr Vovchenko , Volker Koch , Chun Shen

Generative AI is a fast-growing area of research offering various avenues for exploration in high-energy nuclear physics. In this work, we explore the use of generative models for simulating electron-proton collisions relevant to…

High Energy Physics - Phenomenology · Physics 2024-08-14 Peter Devlin , Jian-Wei Qiu , Felix Ringer , Nobuo Sato

Network science provides a universal framework for modeling complex systems, contrasting the reductionist approach generally adopted in physics. In a prototypical study, we utilize network models created from spectroscopic data of atoms to…

Reactive force fields for molecular dynamics have enabled a wide range of studies in numerous material classes. These force fields are computationally inexpensive as compared to electronic structure calculations and allow for simulations of…

Materials Science · Physics 2023-04-26 Brenden W. Hamilton , Pilsun Yoo , Michael N. Sakano , Md Mahbubul Islam , Alejandro Strachan

Type Ia supernovae are the outcome of the explosion of a carbon-oxygen white dwarf in a close binary system. They are thought to be the main contributors to the galactic nucleosynthesis of iron-peak elements, with important contributions to…

Solar and Stellar Astrophysics · Physics 2024-01-18 E. Bravo , J. Isern , L. Piersanti

We report on studies of Classical Nova (CN) explosions where we follow the evolution of thermonuclear runaways (TNRs) on oxygen-neon (ONe) white dwarfs (WDs). Using NOVA, a one-dimensional hydrodynamic computer code, we accrete Solar matter…

Solar and Stellar Astrophysics · Physics 2024-01-05 Sumner Starrfield , Maitrayee Bose , Christian Iliadis , W. Raphael Hix , Charles E. Woodward , R. Mark Wagner

Despite their use as cosmological distance indicators and their importance in the chemical evolution of galaxies, the unequivocal identification of the progenitor systems and explosion mechanism of normal type Ia supernova (SN Ia) remains…

High Energy Astrophysical Phenomena · Physics 2017-05-15 Warren P. Wright , James P. Kneller , Sebastian T. Ohlmann , Friedrich K. Roepke , Kate Scholberg , Ivo R. Seitenzahl

Here we revisit line identifications of type I supernovae and highlight trace amounts of unburned hydrogen as an important free parameter for the composition of the progenitor. Most 1-dimensional stripped-envelope models of supernovae…

High Energy Astrophysical Phenomena · Physics 2016-04-06 J. T. Parrent , D. Milisavljevic , A. M. Soderberg , M. Parthasarathy

Aims. The interaction of supernova remnants (SNRs) with molecular clouds gives rise to strong molecular emission in the far-IR and sub-mm wavelength regimes. The application of MHD shock models in the interpretation of this line emission…

Astrophysics of Galaxies · Physics 2014-10-01 S. Anderl , A. Gusdorf , R. Güsten

In traditional hydrodynamic theories for ionic fluids, conservation of the mass and linear momentum is not properly taken care of. In this paper, we develop hydrodynamic theories for a viscous, ionic fluid of $N$ ionic species enforcing…

Fluid Dynamics · Physics 2018-11-08 Xiaogang Yang , Yuezheng Gong , Jun Li , Robert S. Eisenberg , Qi Wang

The transport of excess protons and hydroxide ions in water underlies numerous important chemical and biological processes. Accurately simulating the associated transport mechanisms ideally requires utilizing ab initio molecular dynamics…

Chemical Physics · Physics 2023-08-15 Austin O. Atsango , Tobias Morawietz , Ondrej Marsalek , Thomas E. Markland

We introduce a local machine-learning method for predicting the electron densities of periodic systems. The framework is based on a numerical, atom-centred auxiliary basis, which enables an accurate expansion of the all-electron density in…

Chemical Physics · Physics 2021-11-10 Alan M. Lewis , Andrea Grisafi , Michele Ceriotti , Mariana Rossi

Theoretical and observational approaches to settling the important questions surrounding the progenitor systems and the explosion mechanism of normal Type Ia supernovae have thus far failed. With its unique capability to obtain continuous…

High Energy Astrophysical Phenomena · Physics 2024-06-19 R. Pakmor , I. R. Seitenzahl , A. J. Ruiter , S. A. Sim , F. K. Roepke , S. Taubenberger , R. Bieri , S. Blondin

We present an overview of two-dimensional (2D) core-collapse supernova simulations employing neutrino transport scheme by the isotropic diffusion source approximation. We study 101 solar-metallicity, 247 ultra metal-poor, and 30 zero-metal…

High Energy Astrophysical Phenomena · Physics 2015-10-28 Ko Nakamura , Tomoya Takiwaki , Takami Kuroda , Kei Kotake

Supernova models with a full spectral treatment of the neutrino transport are presented, employing the Prometheus/Vertex neutrino-hydrodynamics code with a ``ray-by-ray plus'' approximation for treating two- (or three-) dimensional…

Astrophysics · Physics 2008-11-26 R. Buras , M. Rampp , H. -Th. Janka , K. Kifonidis

Observations of massive ($M \approx 2.0~M_\odot$) neutron stars (NSs), PSRs J1614-2230 and J0348+0432, rule out most of the models of nucleon-hyperon matter employed in NS simulations. Here we construct three possible models of…

High Energy Astrophysical Phenomena · Physics 2014-03-05 M. E. Gusakov , P. Haensel , E. M. Kantor

The study of chemical reactions in aqueous media is very important for its implications in several fields of science, from biology to industrial processes. Modelling these reactions is however difficult when water directly participates in…

Chemical Physics · Physics 2021-03-24 Manyi Yang , Luigi Bonati , Daniela Polino , Michele Parrinello

Kilonovae, the electromagnetic transients produced from two merging neutron stars, exhibit evolving spectral signatures in ultraviolet, visible, and infrared radiation. Starting around one week post-merger, equilibrium assumptions…

Atomic Physics · Physics 2026-03-03 S. Bromley , E. Garbe , N. McElroy , C. Ballance , M. Fogle , P. Stancil , S. Loch

Alternative methods to calculate neutron capture cross sections on radioactive nuclei are reported using the theory of Inclusive Non-Elastic Breakup (INEB) developed by Hussein and McVoy [1]. The statistical coupled-channels theory proposed…

Nuclear Theory · Physics 2021-03-01 C. A. Bertulani , B. V. Carlson

With the same method as used previously, we investigate neutrino-driven explosions of a larger sample of blue supergiant models. The larger sample includes three new presupernova stars. The results are compared with light-curve observations…

High Energy Astrophysical Phenomena · Physics 2019-04-24 Victor Utrobin , Annop Wongwathanarat , H. -Thomas Janka , Ewald Mueller , T. Ertl , Stan Woosley