經典英文物理教材係列：鏇量與時空（第1捲） [Spinors and space-time] 下載 mobi epub pdf 電子書 2024

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內容簡介

　　《鏇量與時空(第1捲)》 is the first to present a comprehensive development of space-time geometry using the 2-spinor formalism. There are also several other new features in our presentation. One of these is the systematic and consistent use of the abstract index approach to tensor and spinor calculus. We hope that the purist differential geometer who casually leafs through the book will not automatically be put off by the appearance of numerous indices. Except for the occasional bold-face upright ones， our indices differ from the more usual ones in being abstract markers without reference to any basis or coordinate system. Our use of abstract indices leads to a number of simplifications over conventional treatments.

內頁插圖

目錄

Preface
1 The geometry of world-vectors and spin-vectors
1.1 M inkowski vector space
1.2 Null directions and spin transformations
1.3 Some properties of Lorentz transformations
1.4 Null flags and spin-vectors
1.5 Spinorial objects and spin structure
1.6 The geometry ofspinor operations

2 Abstract indices and spinor algebra
2.1 Motivation for abstract-index approach
2.2 The abstract-index formalism for tensor algebra
2.3 Bases
2.4 The total reflexivity of on a manifold
2.5 Spinor algebra

3 Spinors and worid-tensors
3.1 World-tensors as spinors
3.2 Null flags and complex null vectors
3.3 Symmetry operations
3.4 Tensor representation of spinor operations
3.5 Simple propositions about tensors and spinors at a point
3.6 Lorentz transformations

4 Differentiation and curvature
4.1 Manifolds
4.2 Covariant derivative
4.3 Connection-independent derivatives
4.4 Differentiation ofspinors
4.5 Differentiation ofspinor components
4.6 The curvature spinors
4.7 Spinor formulation of the Einstein-Cartan-Sciama-Kibble theory
4.8 The Weyl tensor and the BeI-Robinson tensor
4.9 Spinor form of commutators
4.10 Spinor form of the Bianchi identity
4.11 Curvature spinors and spin-coefficients
4.12 Compacted spin-coefficient formalism
4.13 Cartans method
4.14 Applications to 2-surfaces
4.15 Spin-weighted spherical harmonics

5 Fields in space-time
5.1 The electromagnetic field and its derivative operator
5.2 Einstein-Maxwell equations in spinor form
5.3 The Rainich conditions
5.4 Vector bundles
5.5 Yang-Mills fields
5.6 Conformal rescalings
5.7 Massless fields
5.8 Consistency conditions
5.9 Conformal invariance of various field quantities
5.10 Exact sets of fields
5.11 Initial data on a light cone
5.12 Explicit field integrals
Appendix： diagrammatic notation
References
Subject and author index
Index of symbols

前言/序言

　　To a very high degree of accuracy，the space—time we inhabit can be taken to be a smooth four-dimensional manifold．endowed with the smooth Lorentzian metric of Einstein’S special or general relativity．The formalism
　　most commonly used for the mathematical treatment of manifolds and their metrics iS。ofcourse，the tensor calculus(or such essentially equivalent alternatives as Cartan’S calculus of moving frames)．But in the specific case of four dimensions and Lorentzian metric there happens to exist——by accident or providence—another formalism which iS in many ways more appropriate，and that is the formalism of 2-spinors．Yet 2-spinor calculus is still comparatively unfamiliar even now—some seventy years after Cartan first introduced the general spinor concept，and over fifty years since Dirac，in his equation for the electron。revealed a fundamentally mportant role for spinors in relativistic physics and van der Waerden
　　provided the basic 2．spinor algebra and notation．
　　The present work was written in the hope of giving greater currency to these ideas．We develop the 2-spinor calculus in considerable detail．
　　assuming no prior knowledge of the Subjeer，and show how it may be viewed either as a useful supplement or as a practical alternative to the more familiar world-tensor calculus．We shail concentrate，here，entirely on 2-spinors。rather than the 4-spinors that have become the more familiar tools of theoretical physicists．The reason for this iS that only with 2．
　　spmors does one 0btain a practical alternative to the standard vectortensor calculus．2 spinors being the more primitive elements out of which 4·spinors(as weil as world·tensorsl can be readily built．
　　Spinor calculus may be regarded as applying at a deeper level of structure of space-time than that described by the standard world．tensorcalculus．By comparison，world-tensors are Iess refined．fail to make trans．
　　parent some of the subtler properties of space——time brousht particularly to light by quantum mechanics and，not Ieast，make certain types of mathematical calculations inordinately heavy．f Their strength Iies in a generaI applicability to manifolds of arbitrary dimension．rather than in supplying a specific space—time calculus．)

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