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The impact of beyond mean field effects on the ground state and fission properties of superheavy nuclei has been investigated in a five-dimensional collective Hamiltonian based on covariant density functional theory. The inclusion of…

Nuclear Theory · Physics 2020-03-17 Z. Shi , A. V. Afanasjev , Z. P. Li , J. Meng

The Coulomb effect, an essential ingredient in nuclear systems, is quantitatively investigated for certain Skyrmions within the Skyrme model. To do this we calculate the Coulomb energy from numerically generated multi-Skyrmions and,…

Nuclear Theory · Physics 2019-05-01 Nana Ma , Chris James Halcrow , Hongfei Zhang

Dust particles immersed within a plasma environment, such as those found in planetary rings or comets, will acquire an electric charge. If the ratio of the inter-particle potential energy to average kinetic energy is large enough the…

Space Physics · Physics 2009-11-10 J. Vasut , T. W. Hyde , L. Barge

We carry out numerical simulation of a first order phase transition in 2+1 dimensions by randomly nucleating bubbles, and study the formation of global U(1) vortices. Bubbles grow and coalesce and vortices are formed at junctions of bubbles…

High Energy Physics - Phenomenology · Physics 2014-11-17 Sanatan Digal , Supratim Sengupta , Ajit M. Srivastava

In quantum systems with short-range interactions, causality imposes nontrivial constraints on low-energy scattering parameters. We investigate these causality constraints for systems where a long-range Coulomb potential is present in…

Nuclear Theory · Physics 2013-03-14 Sebastian König , Dean Lee , H. -W. Hammer

We study collisions between pairs of bubbles nucleated in an ambient false vacuum. For the first time, we include the effects of small initial (quantum) fluctuations around the instanton profiles describing the most likely initial bubble…

Cosmology and Nongalactic Astrophysics · Physics 2017-11-09 J. Richard Bond , Jonathan Braden , Laura Mersini-Houghton

We discuss models in which vacua other than our own can be directly observed in the present universe. Models with density-dependent vacuum structure can give rise to `non-lethal'-vacua: vacua with lower energy-density than our vacuum, but…

High Energy Physics - Phenomenology · Physics 2019-10-02 Anson Hook , Junwu Huang

Enhancing the efficiency of water electrolysis, which can be severely impacted by the nucleation and growth of bubbles, is key in the energy transition. In this combined experimental and numerical study, in-situ bubble evolution and…

How does subatomic matter organize itself? Neutron stars are cosmic laboratories uniquely poised to answer this fundamental question that lies at the heart of nuclear science. Newly commissioned rare isotope facilities, telescopes operating…

Nuclear Theory · Physics 2019-12-25 Junjie Yang , J. Piekarewicz

.The physical properties of an ensemble of tightly packed particles like bubbles, drops or solid grains are controlled by their interactions. For the case of bubbles and drops it has recently been shown theoretically and computationally…

Soft Condensed Matter · Physics 2019-10-23 Gaël Ginot , Reinhard Höhler , Sandrine Mariot , Andy Kraynik , Wiebke Drenckhan

We study the effect of a bubble wall on the entanglement entropy of a free massive scalar field between two causally disconnected open charts in de Sitter space. We assume there is a delta-functional wall between the open charts. This can…

High Energy Physics - Theory · Physics 2018-05-09 Andreas Albrecht , Sugumi Kanno , Misao Sasaki

Water can exist in a metastable liquid state under tension for long times before the system relaxes into the vapor via cavitation, i.e., bubble nucleation. Microscopic information on the cavitation process can be extracted from experimental…

Chemical Physics · Physics 2016-10-19 Georg Menzl , Christoph Dellago

Background: The inner crust of neutron stars consists of a Coulomb lattice of neutron-rich nuclei, immersed in a sea of superfluid neutrons with background relativistic electron gas. A proper quantum mechanical treatment for such a system…

Nuclear Theory · Physics 2024-06-21 Kenta Yoshimura , Kazuyuki Sekizawa

The nucleation of vapor bubbles within a superheated fluid is studied using density functional theory. The nudged elastic band technique is used to find the minimum energy pathway from the metastable uniform liquid to the stable uniform gas…

Statistical Mechanics · Physics 2008-08-20 James F. Lutsko

Turbulent flows laden with small bubbles are ubiquitous in many natural and industrial environments. From the point of view of numerical modeling, to be able to handle a very large number of small bubbles in direct numerical simulations,…

In this article, we present direct numerical simulation results for the expansion of spherical cap bubbles attached to a rigid wall due to a sudden drop in the ambient pressure. The critical pressure drop beyond which the bubble growth…

Fluid Dynamics · Physics 2024-05-28 Mandeep Saini , Xiang Bin Chen , Stephane Zaleski , Daniel Fuster

Atomic nuclei exhibit multiple energy scales ranging from hundreds of MeV in binding energies to fractions of an MeV for low-lying collective excitations. As the limits of nuclear binding is approached near the neutron- and proton…

Nuclear Theory · Physics 2025-02-20 Z. H. Sun , A. Ekström , C. Forssén , G. Hagen , G. R. Jansen , T. Papenbrock

We consider torsional oscillations that are trapped in a layer of spherical-hole (bubble) nuclear structure, which is expected to occur in the deepest region of the inner crust of a neutron star. Because this layer intervenes between the…

High Energy Astrophysical Phenomena · Physics 2016-12-06 Hajime Sotani , Kei Iida , Kazuhiro Oyamatsu

In spite of the success of the Bethe-Weizs\"acker mass formula in its modern numerical and predictive implementations, the common-knowledge principle that it is electrostatics which, ultimately, favors neutron-rich nuclei still presents…

Nuclear Theory · Physics 2024-08-27 Carmine Anzivino , Vinay Vaibhav , Alessio Zaccone

We investigate the possibility that some nuclei show density distributions with a depletion in the center, a semi-bubble structure, by using a Hartree-Fock plus Bardeen-Cooper-Schrieffer approach. We separately study the proton, neutron and…

Nuclear Theory · Physics 2018-03-21 G. Co' , M. Anguiano , V. De Donno , A. M. Lallena