Results 141 to 150 of about 174,053,555 (286)

The Origin of Particle Stability, Particle Generation in the Early Universe, the Nature of Neutron Decay, and the Structure of Dark Matter ——A Particle Physics Review Based on the First-Principle Unified Theory of Light Strings

Based on the axiom system of the First-Principle Unified Theory of Light Strings, this paper systematically addresses four fundamental problems: the origin of particle stability, the generation and screening of particles in the early universe, the microscopic mechanism of neutron decay, and the physical configuration of dark matter. Using the intrinsic
openaire   +2 more sources

Sub‐nm2 Ferroelectric Domains via Charged 180° Walls in ZrO2

Advanced Materials, EarlyView.
Ferroelectric ZrO2${\rm ZrO}_2$ thin films host closely spaced charged 180∘$^{\circ }$ domain walls that vertically compress polar domains beyond their lateral half‐unit‐cell limit. These head‐to‐head and tail‐to‐tail walls show distinct bulk‐like structures, natural oxygen‐mediated stabilization, and highly asymmetric mobility, highlighting new ...
Nashrah Afroze, Hamoon Fahrvandi, Guodong Ren, Pawan Kumar, Christopher Nelson, Sarah Lombardo, Mengkun Tian, Ping‐Che Lee, Jiayi Chen, Manifa Noor, Kisung Chae, Sanghyun Kang, Prasanna Venkat Ravindran, Matthew Bergschneider, Gwan Yeong Jung, Pravan Omprakash, Gardy K. Ligonde, Nujhat Tasneem, Dina Triyoso, Steven Consiglio, Kanda Tapily, Robert Clark, Gert Leusink, Jayakanth Ravichandran, Shimeng Yu, Andrew R Lupini, Andrew C Kummel, Kyeongjae Cho, Duk‐Hyun Choe, Nazanin Bassiri‐Gharb, Josh Kacher, Rohan Mishra, Jun Hee Lee, Asif Khan   +33 more
wiley   +1 more source

Impact of Sommerfeld Corrections on the Dark Matter Relic Density [PDF]

openThis thesis explores how long‐range self‐interactions modify the standard thermal freeze‐out picture of dark matter via the non‐perturbative Sommerfeld effect.
DAINELLI, GIULIO ALVISE
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Freeze-in at all couplings

Journal of High Energy Physics
We perform a comprehensive analysis of a charged parent freeze-in dark matter model, focusing on scenarios where the Universe reheats to a temperature comparable to or lower than the mass scales of the theory.
Andreas Goudelis, Andre Lessa, Lucas Magno Dantas Ramos, Thomas Reggio   +3 more
doaj   +1 more source

The Origin of Particle Stability, Particle Generation in the Early Universe, the Nature of Neutron Decay, and the Structure of Dark Matter — A Comprehensive Review of Particle Physics in the First-Principle Unified Theory of Light Strings

Based on the First-Principle Unified Theory of Light Strings, this paper explains the origin of particle stability, particle generation in the early universe, the nature of neutron decay, and the structure of dark matter. It demonstrates that only electrons and protons are permanently stable elementary particles; neutrons are metastable proton–electron
openaire   +1 more source

Ferrocene‐Based Self‐Assembled Monolayers Enable Ultra‐High Specific Detectivity in Perovskite Photodetectors

Advanced Materials, EarlyView.
We report perovskite photodetectors with record specific detectivities exceeding 1013 Jones with a novel molecular design strategy to functionalize self‐assembled monolayers (SAMs) with ferrocene (Fc) derivatives. Fc‐SAM‐based devices also exhibit strong operational stability and enable data transmission rates exceeding 1 Mbps in a LiFi system ...
Edoardo Angela, William D. J. Tremlett, Francesco Vanin, William J. O. Rodriguez Kazeem, Zhuoran Qiao, Davide Nodari, Francesco Furlan, Zonglong Zhu, Martyn A. McLachlan, Nicholas J. Long, Nicola Gasparini   +10 more
wiley   +1 more source

Complex dark photon dark matter EFT

Journal of High Energy Physics
We construct an effective field theory for complex Stueckelberg dark photon dark matter. Such an effective construction can be realized by writing down a complete set of operators up to dimension six built with the complex dark photon and Standard Model ...
Enrico Bertuzzo, Tommaso Sassi, Andrea Tesi   +2 more
doaj   +1 more source

Dark matter in the Milky Way: uncertainties on its distribution and implications on its particle nature

, 2019
O conhecimento detalhado da distribuição da matéria escura na Via Láctea é importante para a compreensão da interação entre bariões e matéria escura nos processos envolvidos na formação e evolução das galáxias. Além disso, é um elemento-chave para experimentos que objetivam detectar direta ou indiretamente a partícula de matéria escura devido a ...
openaire   +1 more source

Interface‐Mediated Catalysis for Improved Hydrogen Storage in Reactive Hydride Composites

Advanced Materials, EarlyView.
Catalyst–hydride interfaces are engineered in Co@C‐ and Ni@C‐modified 2LiH + MgB2 reactive hydride composites to accelerate hydrogen uptake and release. Multiscale scattering, in‐situ synchrotron radiation powder x‐ray diffraction and density functional theory calculations reveal the structural and electronic origin of the catalytic enhancement ...
Yuanyuan Shang, Pawan Kumar Soni, Han Ge, Weijie Yang, Fahim Karimi, Thi Thu Le, Tamás Simon, Michael Fröba, Jitendra Mata, Joshua King, Hai‐Wen Li, Thomas Klassen, Claudio Pistidda   +12 more
wiley   +1 more source

"Dark Matter searches at ATLAS"

, 2016
Although the existence of Dark Matter is a well-established hypothesis to explain a range of astrophysical and cosmological measurements, its nature and particle properties still remain one of the greatest unsolved puzzles of particle and astro-particle ...
Gustavino, Giuliano
core