统一理论和超对称-第3版
节选
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《统一理论和超对称(第3版)》是作者依据其为马里兰大学高年级研究生授课时所用的讲义编著而成，详细介绍了人们尝试建立一个能够描述自然界中各种基本相互作用的大统一理论的*新进展。《统一理论和超对称(第3版)》包罗甚广，涉及到粒子物理学中的大统一理论和超对称理论中的许多议题，例如自发对称破缺，大统一理论，超对称性和超引力等。作者在简要回顾了基本粒子理论之后，详细介绍了复合夸克，轻子，希格斯玻色子和CP破坏等论题，*后讨论超对称的大统一方案。这是《统一理论和超对称(第3版)》的第三版，进一步修订了书中内容，添入该领域的*新进展，特别是近年来实验方面的诸多进展。对这些新进展的集中介绍很有意义，使得《统一理论和超对称(第3版)》成为该领域中连接传统理论与研究前沿的有益桥梁。无论对该领域的研究生还是对研究人员来讲，《统一理论和超对称(第3版)》都是一部很有价值的教科书和参考文献。
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相关资料
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插图：three-quark bound states, whereas meson spectroscopy arises from nonrela tivistic quark-antiquark bound states. Accepting quarks as the constituents of hadrons, we have to search for a field theory that provides the bindingforce between the quarks.In trying to understand the Fermi statistics for baryons （such as ）, itbecame clear that if they are S-wave bound states, then the space part oftheir wave function is totally symmetric; since a particle such as consists of three strange quarks, and has spin 3/2, the spin part of its wave functionis symmetric. If there were no other degree of freedom, this would be indisagreement with the required Fermi statistics. A simple way to resolvethis problem is to introduce [11] a threefold degree of freedom for quarks,called color （quarks being color triplets） and assume that all known baryonsare singlet under this new SU（3）. Since an SU（3）c-singlet constructed outof three triplets is antisymmetric in the interchange of indices （quarks）, thetotal baryon wave function is antisymmetric in the interchange of any twoconstituents as required by Fermi statistics.It is now tempting to introduce strong forces by making SU（3）c into alocal symmetry. In fact, if this is done, we can show that exchange of theassociated gauge bosons provides a force for which the SU（3）c color singletis the lowest-lying state; and triplet, sextet, and octet states all have highermass. By choosing this mass gap large, we can understand why excitedstates corresponding to the color degree of freedom have not been found.While this argument in favor of an SU（3）c gauge theory of strong inter-action was attractive, it was not conclusive. The most convincing argumentin favor of SU（3）c gauge theory came from the experimental studies of deepinelastic neutrino and electron scattering off nucleons. These experimentsinvolved the scattering of very-high-energy （E） electronsand neutrinoswith the exchange of very high momentum transfers （i.e., q2 large）. It wasfound that the structure functions, which are analogs of form factors forlarge q2 and E, instead of falling with q2, became scale-invariant functionsdepending only on the ratio q2/2mE. This was known as the phenomenonof scaling [12]. Two different theoretical approaches were developed to un-derstand this problem. The first was an intuitive picture called the partonmodel suggested by Feynman [13] and developed by Bjorken and Paschos[14], where it was assumed that, at very high energies, the nucleon can bethought of as consisting of free pointlike constituents. The experimentalresults also showed that these pointlike constituents were spin-l/2 objects,like quarks, and the scaling function was simply the momentum distri-bution function for the partons inside the nucleon. These partons couldbe identified with quarks, thus providing a unified description of the nu-cleon as consisting of quarks at low, as well as at high, energies. The maindistinction between these two energy regimes uncovered by deep inelas-tic scattering experiments is that at low energies the forces between thequarks are strong, whereas at high energies the forces vanish letting thequarks float freely inside the nucleons.
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本书特色
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《统一理论和超对称(第3版)》是由世界图书出版公司出版的。
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内容简介
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本书是作者依据其为马里兰大学高年级研究生授课时所用的讲义编著而成，详细介绍了人们尝试建立一个能够描述自然界中各种基本相互作用的大统一理论的*新进展。本书包罗甚广，涉及到粒子物理学中的大统一理论和超对称理论中的许多议题，例如自发对称破缺，大统一理论，超对称性和超引力等。作者在简要回顾了基本粒子理论之后，详细介绍了复合夸克，轻子，希格斯玻色子和cp破坏等论题，*后讨论超对称的大统一方案。这是本书的第三版，进一步修订了书中内容，添入该领域的*新进展，特别是近年来实验方面的诸多进展。对这些新进展的集中介绍很有意义，使得本书成为该领域中连接传统理论与研究前沿的有益桥梁。无论对该领域的研究生还是对研究人员来讲，本书都是一部很有价值的教科书和参考文献。
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作者简介
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作者：（美国）莫哈帕特拉（Rabindra N.Mohapatra）
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目录
preface to the third edition preface to the second edition preface to the first edition 1 important basic concepts in particle physics 1.1 introduction 1.2 symmetries and currents 1.3 local symmetries and yang-mills fields 1.4 quantum chromodynamic theory of strong interactions 1.5 hidden symmetries of weak interactions references 2 spontaneous symmetry breaking 2.1 symmetries and their realizations 2.2 nambu-goldstone bosons for an arbitrary non-abelian group 2.3 some properties of nambu-goldstone bosons 2.4 phenomenology of massless and near-massless spin-0 bosons 2.5 the higgs-kibble mechanism in gauge theories 2.6 group theory of the higgs phenomenon 2.7 renormalizability and triangle anomalies references 3 the su(2)l x u(1) model 3.1 the su(2)l x u(1) model of glashow, weinberg, and salam 3.2 neutral-current interactions 3.3 masses and decay properties of w and z bosons 3.4 fermion masses and mixing 3.5 higher-order-induced flavor-changing neutral-current effects 3.6 the higgs bosons 3.7 su(2)l x u(1) model with two higgs doublets 3.8 puzzles of the standard model 3.9 outline of the various scenarios 3.10 beyond the standard model references 4 cp violation: weak and strong 4.1 cp violation in weak interactions 4.2 cp violation in gauge models: generalities 4.3 the kobayashi-maskawa model 4.4 left-right symmetric models of cp violation 4.5 the higgs exchange models 4.6 strong cp violation and the 0-problem 4.7 solutions to the strong cp problem without the axion 4.8 summary references 5 grand unification and the su(5) model 5.1 the hypothesis of grand unification 5.2 su(n) grand unification 5.3 sin2 ow in grand unified theories (gut) 5.4 su(5) 5.5 grand unification mass scale and sin2θw at low energies 5.6 detailed predictions of the su(5) model for proton decay 5.7 some other aspects of the su(5) model 5.8 gauge coupling unification with intermediate scales before grand unification references 6 symmetric models of weak interactions and massive neutrinos 6.1 why left-right symmetry? 6.2 the model, symmetry breaking, and gauge boson masses 6.3 limits on mzr and rnwr from charged-current weak interactions 6.4 properties of neutrinos and lepton-number-violating processes 6.5 baryon number nonconservation and higher unification 6.6 sin2θw and the scale of partial unification 6.7 left-right symmetry–an alternative formulation 6.8 higher order effects 6.9 conclusions references 7 so(10) grand unification 7.1 introduction 7.2 so(2n) in an su(n) basis [3] 7.3 fermion masses and the “charge conjugation” operator 7.4 symmetry-breaking patterns and intermediate mass scales 7.5 decoupling parity and su(2)r breaking scales 7.6 second z’ boson references 8 technicolor and compositeness 8.1 why compositeness? 8.2 technicolor and electroweak symmetry breaking 8.3 techni-composite pseudo-goldstone bosons 8.4 fermion masses 8.5 composite quarks and leptons 8.6 light quarks and leptons and ‘t hooft anomaly matching 8.7 examples of ‘t hooft anomaly matching 8.8 some dynamical constraints on composite models 8.9 other aspects of composite models 8.10 symmetry breaking via top-quark condensate references 9 global supersymmetry 9.1 supersymmetry 9.2 a supersymmetric field theory 9.3 two-component notation 9.4 superfields 9.5 vector and chiral superfields references 10 field theories with global supersymmetry 10.1 supersymmetry action 10.2 supersymmetric gauge invariant lagrangian 10.3 feynman rules for supersymmetric theories [3] 10.4 allowed soft-breaking terms references 11 broken supersymmetry and application to particle physics 11.1 spontaneous breaking of supersymmetry 11.2 supersymmetric analog of the goldberger treiman relation 11.3 d-type breaking of supersymmetry 11.4 o’raifeartaigh mechanism or f-type breaking of supersymmetry 11.5 a mass formula for supersymmetric theories and the need for soft breaking references 12 minimal supersymmetric standard model 12.1 introduction, field content and the lagrangian 12.2 constraints on the masses of superparticles 12.3 other effects of superparticles 12.4 why go beyond the mssm? 12.5 mechanisms for supersymmetry breaking 12.6 renormalization of soft supersymmetry-breaking parameters 12.7 supersymmetric left-right model references 13 supersymmetric grand unification 14 local supersymmetry (n = 1) 15 application of supergravity (n = 1) to particle physics 16 beyond n = 1 supergravity 17 superstrings and quark-lepton physics index
封面
书名:统一理论和超对称-第3版
作者:莫哈帕特拉(Rabindra N.Mohapatra)
页数:421
定价:¥49.0
出版社:世界图书出版公司
出版日期:2010-04-01
ISBN:9787510005718
PDF电子书大小:144MB 高清扫描完整版