Results 101 to 110 of about 41,122 (294)

Neutrino masses and mixed dark matter from doublet and singlet scalars

Journal of High Energy Physics
We consider the extension of the Standard Model with an inert scalar doublet, three right-handed neutrinos, and singlet scalar fields, φ and S. In this model, neutrino masses are zero in the limit of the unbroken Z 4 discrete symmetry.
Jongkuk Kim, Seong-Sik Kim, Hyun Min Lee, Rojalin Padhan   +3 more
doaj   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Slow-roll suppression of adiabatic instabilities in coupled scalar field-dark matter models [PDF]

, 2008
We study the evolution of linear density perturbations in the context of interacting scalar field-dark matter cosmologies, where the presence of the coupling acts as a stabilization mechanism for the runaway behavior of the scalar self-interaction ...
Pier Stefano Corasaniti
semanticscholar   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Some cosmological consequences of higher dimensional Klein–Gordon–Rastall theory

European Physical Journal C: Particles and Fields, 2023
Using dynamical system analysis, we investigate some cosmological consequences of Rastall gravity coupled to a scalar field (called the Klein–Gordon–Rastall theory) with exponential scalar potential turned on in higher dimensions.
Tegar Ari Widianto, Ahmad Khoirul Falah, Agus Suroso, Husin Alatas, Bobby Eka Gunara   +4 more
doaj   +1 more source

Scalar Field Dark Matter: head-on interaction between two structures [PDF]

, 2006
Instituto de F´isica y Matem´aticas, Universidad Michoacana de San Nicol´as de Hidalgo. Edificio C-3,Cd. Universitaria, C. P. 58040 Morelia, Michoac´an, M´exico.(Dated: February 5, 2008)In this manuscript we track the evolution of a system consisting of ...
A. Bernal, F. S. Guzmán
semanticscholar   +1 more source

Revise the dark matter-phantom scalar field interaction

Physica Scripta
Abstract The cosmological history and evolution are examined for gravitational models that include interaction within the dark sector of the Universe. In particular, we consider dark energy to be described by a phantom scalar field, while dark matter ρ m is modeled as a ...
Andronikos Paliathanasis, Amlan Halder, Genly Leon   +2 more
openaire   +2 more sources

CMB-galaxy correlation in Unified Dark Matter scalar field cosmologies [PDF]

Journal of Cosmology and Astroparticle Physics, 2011
We present an analysis of the cross-correlation between the CMB and the large-scale structure (LSS) of the Universe in Unified Dark Matter (UDM) scalar field cosmologies. We work out the predicted cross-correlation function in UDM models, which depends on the speed of sound of the unified component, and compare it with observations from six galaxy ...
BERTACCA, DANIELE, A. RACCANELLI, O. F. PIATTELLA, D. PIETROBON, BARTOLO, NICOLA, MATARRESE, SABINO, T. GIANNANTONIO   +6 more
openaire   +2 more sources

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Bose-Einstein condensation of relativistic Scalar Field Dark Matter [PDF]

, 2008
Standard thermodynamical results of ideal Bose gases are used to study the possible formation of a cosmological Bose-Einstein condensate in Scalar Field Dark Matter models; the main hypothesis is that the boson particles were in thermal equilibrium in ...
L. A. Urena-L'opez
semanticscholar   +1 more source