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isospin

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isospin
isospin Physics. (ˈaɪsəʊspɪn) [Contraction of isotopic spin, isobaric spin.] A vector quantity associated with elementary particles and atomic nuclei which is used to give mathematical expression to the fact that the strong interaction is independent of electric charge; its quantum number (symbol T ... Oxford English Dictionary
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Isospin multiplet
In particle physics, isospin multiplets are families of hadrons with approximately equal masses. This makes the isospin symmetry a good approximation. References Hadrons wikipedia.org
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is isospin spin
In nuclear physics and particle physics, isospin is a quantum number related to the up- and down quark content of the particle. Isospin symmetry is a subset of the flavour symmetry seen in the interactions of baryons and mesons.
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Weak isospin - Wikipedia
In particle physics, weak isospin is a quantum number relating to the electrically charged part of the weak interaction: Particles with half-integer weak isospin can interact with the W ± bosons; particles with zero weak isospin do not. Weak isospin is a construct parallel to the idea of isospin under the strong interaction.Weak isospin is usually given the symbol T or I, with the third ...
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Weak isospin
isospin can interact with the bosons; particles with zero weak isospin do not. Weak isospin is a construct parallel to the idea of isospin under the strong interaction. wikipedia.org
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Isoscalar
In particle physics, isoscalar refers to the scalar transformation of a particle or field under the SU(2) group of isospin. Isoscalars are a singlet state, with total isospin 0 and the third component of isospin 0, much like a singlet state in a 2-particle addition of spin. wikipedia.org
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Isovector
In particle physics, isovector refers to the vector transformation of a particle under the SU(2) group of isospin. An isovector state is a triplet state with total isospin 1, with the third component of isospin either 1, 0, or -1, much like a triplet state in the two-particle wikipedia.org
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Seesaw mechanism
Call the neutrino part of a Weyl spinor a part of a left-handed lepton weak isospin doublet; the other part is the left-handed charged lepton as it In particular, since has weak isospin like the Higgs field , and has weak isospin 0, the mass parameter can be generated from Yukawa interactions with wikipedia.org
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أيزوسبين
في نظرية الجسيمات الأولية، الأيزوسبين Isospin هو رقم كمي للنكهة، يصف التناظر الداخلي لـ التفاعل القوي ويستخدم لتصنيف الهادرونات. صاغ يوجين فيجنر الاسم isospin في عام 1937 وكان في البداية يرمز إلى العزم المغزلي النظيري . wikipedia.org
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Gell-Mann–Okubo mass formula
In physics, the Gell-Mann–Okubo mass formula provides a sum rule for the masses of hadrons within a specific multiplet, determined by their isospin (I) isospin and hypercharge. wikipedia.org
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为什么需要伊辛模型、海森堡模型、t-J 模型等一系列模型？
至于现实中的材料则更加奇妙了，在A2BO3的立方结构中，构造出honeycomb格子，其中d轨道原子受到晶体场和soc作用，在合适的电子填充数下可以得到有效的isospin 1/2，接着这个isospin的exchange效果，因为是edge sharing而精确抵消，其中三种不同朝向的边由于不同的edge zhihu
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Baryon
Properties Isospin and charge The concept of isospin was first proposed by Werner Heisenberg in 1932 to explain the similarities between protons and The mathematics of isospin was modeled after that of spin. wikipedia.org
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Gell-Mann–Nishijima formula
The Gell-Mann–Nishijima formula (sometimes known as the NNG formula) relates the baryon number B, the strangeness S, the isospin I3 of quarks and hadrons The modern version of the formula relates all flavour quantum numbers (isospin up and down, strangeness, charm, bottomness, and topness) with the baryon wikipedia.org
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Delta baryon
Ordinary nucleons (symbol N, meaning either a proton or neutron), by contrast, have a mass of about , and both intrinsic spin and isospin of . The relative probabilities of allowed final charge states are given by their respective isospin couplings. wikipedia.org
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Hypercharge
Definition Hypercharge is one of two quantum numbers of the SU(3) model of hadrons, alongside isospin . Relation with electric charge and isospin The Gell-Mann–Nishijima formula relates isospin and electric charge where I3 is the third component of isospin wikipedia.org
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