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检索条件"机构=Graduate Program in Applied Physics and Department of Physics and Astronomy"
2580 条 记 录,以下是41-50 订阅
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Model Selection with Baryonic Acoustic Oscillations in the Lyman-α Forest
arXiv
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arXiv 2023年
作者: Melia, Fulvio Department of Physics The Applied Math Program Department of Astronomy The University of Arizona AZ85721 United States
The recent release of the final, complete survey of Lyman-α baryonic acoustic oscillation measurements provides the most significant and accurate data base for studying cosmic geometry at an effective redshift zeff =... 详细信息
来源: 评论
Three-dimensional magnetization reconstruction from electron optical phase images with physical constraints
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Science China(physics,Mechanics & astronomy) 2024年 第11期67卷 122-132页
作者: Boyao Lyu Shihua Zhao Yibo Zhang Weiwei Wang Fengshan Zheng Rafal E.Dunin-Borkowski Jiadong Zang Haifeng Du Anhui Province Key Laboratory of Low-Energy Quantum Materials and Devices High Magnetic Field LaboratoryHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Science Island Branch Graduate School of University of Science and Technology of ChinaHefei 230026China Department of Physics and Astronomy University of New HampshireDurham 03824USA Department of Physics The City College of New YorkNew York 10031USA Physics Program Graduate Center of the City University of New YorkNew York 10016USA Department of Chemistry University of New HampshireDurham 03824USA Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Spin-X Institute Center for Electron MicroscopySchool of Physics and OptoelectronicsState Key Laboratory of Luminescent Materials and DevicesGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsSouth China University of TechnologyGuangzhou 511442China Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum JülichJülich 52425Germany
The ability to characterize three-dimensional(3D)magnetization distributions in nanoscale magnetic materials and devices is essential to fully understand their static and dynamic magnetic *** contrast techniques in th... 详细信息
来源: 评论
The Cosmic Timeline Implied by the JWST High-redshift Galaxies
arXiv
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arXiv 2023年
作者: Melia, Fulvio Department of Physics The Applied Math Program Department of Astronomy The University of Arizona AZ85721 United States
The so-called 'impossibly early galaxy' problem, first identified via the Hubble Space Telescope's observation of galaxies at redshifts z > 10, appears to have been exacerbated by the more recent James ... 详细信息
来源: 评论
Model-independent confirmation of a constant speed of light over cosmological distances
arXiv
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arXiv 2023年
作者: Melia, Fulvio Department of Physics The Applied Math Program Department of Astronomy The University of Arizona AZ85721 United States
Recent attempts at measuring the variation of c using an assortment of standard candles and the redshift-dependent Hubble expansion rate inferred from the currently available catalog of cosmic chronometers have tended... 详细信息
来源: 评论
A Resolution of the Monopole Problem in the Rh = ct Universe
arXiv
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arXiv 2023年
作者: Melia, Fulvio Department of Physics The Applied Math Program Department of Astronomy The University of Arizona AZ85721 United States
Spontaneous symmetry breaking in grand unified theories is thought to have produced an exceedingly large number of magnetic monopoles in the early Universe. In the absence of suppression or annihilation, these very ma... 详细信息
来源: 评论
The Scale of Homogeneity in the Rh = ct Universe
arXiv
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arXiv 2023年
作者: Melia, Fulvio Department of Physics The Applied Math Program Department of Astronomy The University of Arizona AZ85721 United States
Studies of the Universe’s transition to smoothness in the context of ΛCDM have all pointed to a transition radius no larger than ∼ 300 Mpc. These are based on a broad array of tracers for the matter power spectrum,... 详细信息
来源: 评论
Inertia, Gravity and the Meaning of Mass
arXiv
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arXiv 2023年
作者: Melia, Fulvio Department of Physics The Applied Math Program Department of Astronomy The University of Arizona AZ85721 United States
Our concept of mass has evolved considerably over the centuries, most notably from Newton to Einstein, and then even more vigorously with the establishment of the standard model and the subsequent discovery of the Hig... 详细信息
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Influence of polyethylene glycol and Gongronema latifolium on the structural, optical and magnetic properties of magnesium ferrite nanoparticles for hyperthermia applications
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Materials Research Innovations 2024年 第4期28卷 229-235页
作者: Orumgbe, Obianke M. Aisida, Samson O. Rufus, Ijeh Uzoeto, Henrietta O. Ekwealor, Azubike Ahmad, Ishaq Ezema, Fabian I. Department of Physics and Astronomy University of Nigeria Nsukka Nigeria National Centre for Physics Quaid-i-Azam University campus Islamabad Pakistan Nanosciences African Network iThemba LABS-National Research South Africa UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology College of Graduate Studies University of South Africa Pretoria South Africa NPU-NCP Joint International Research Centre on Advanced Nanomaterials and Defects Engineering Northwestern Polytechnical University Xi’an China Department of Physics University of Delta Agbor Nigeria Department of applied Sciences and Dental therapy Federal college of Dental technology and therapy Enugu South Africa Africa Centre of Excellence for sustainable Power and Energy Development University of Nigeria Nsukka Nigeria
Ferrite materials have found applications in various fields, particularly in biomedical fields. This work involves the preparation of Magnesium ferrite nanoparticles (MgFNPs) by biosynthesis protocol using polyethylen... 详细信息
来源: 评论
Intrinsic magnetism in KTaO3 heterostructures
arXiv
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arXiv 2024年
作者: Krantz, Patrick W. Tyner, Alexander Goswami, Pallab Chandrasekhar, Venkat Department of Physics Northwestern University EvanstonIL60208 United States Graduate Program for Applied Physics Northwestern University EvanstonIL60208 United States
There has been intense recent interest in the two-dimensional electron gases (2DEGs) that form at the surfaces and interfaces of KTaO3 (KTO), with the discovery of superconductivity at temperatures significantly highe... 详细信息
来源: 评论
Nonlinear Hall Effect in KTaO3Two-Dimensional Electron Gases
arXiv
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arXiv 2024年
作者: Krantz, Patrick W. Tyner, Alexander Goswami, Pallab Chandrasekhar, Venkat Department of Physics Northwestern University EvanstonIL60208 United States Graduate Program for Applied Physics Northwestern University EvanstonIL60208 United States
The observation of a Hall effect, a finite transverse voltage induced by a longitudinal current, usually requires the breaking of time-reversal symmetry, for example through the application of an external magnetic fie... 详细信息
来源: 评论