The inspiration for this book was a course of lectures which I delivered between 1977 and 1980 to undergraduates about to enter their final year in Physics and Theoretical Physics at Cambridge. The aim of the course was to provide a survey of the nature of theoretical reasoning in physics, which would put them in a receptive frame of mind for the very intensive courses of lectures on all aspects of physics in the final year. The objectives of the course are described in the first chapter and concern issues about which I feel very strongly: students can go through an undergraduate course in physics without gaining an understanding of the insights, approaches and techniques which are the tools of the professional physicist, let alone an impression of the intellectual excitement and beauty o the subject. The course was intended as an alternative to the normal mode of presentation and was entitled Theoretical Concepts in Physics.

The object of.this book is to offer an overview of and describe new developments in the credit risk model CreditRisk+. In the selection of topics and in its organization, the book addresses both experts and practitioners, as well as anyone looking for an introduction to the subject.

The one-term, 4-hours-a-week course on magnetism presented a chal-lenge known to all physicists in the field: research interests in the past half a century have been dominated by the effects of strong electron-electron interaction, while standard solid state physics textbooks re-main within the bounds of band theory which is a suitable language for weakly correlated systems, and then add a chapter on Heisenberg magnets whose very existence is in contradiction with the rest of the material, and gets never properly justified. The usual way of clarifying these matters is to go through a formal education in many-body theory, and to learn about strong correlation effects piecemeal from its applica-tions (and breakdowns). This, however, is usually the beginning of the professional career of a theoretician, and it may not be the most recom-mendable approach for others, One takes a long time to discover that there is a unified, non-formal way of thinking about strong correlation phenomena that has long been shared by experimentalists and theoreti-cians in the field; it can be called elementary and should be accessible to all - but it cannot be found in the well-known textbooks.

《量子力学（英文版）》阐释量子力学的诞生、波函数与薛定谔方程、一维定态问题、力学量用算符表示、力学量随时间的演化与对称性、中心力场、粒子在电磁场中的运动、表象变换与量子力学的矩阵形式、自旋、力学量本征值的代数解法、束缚定态微扰论、量子跃迁、散射理论、其他近似方法。为帮助读者更深入掌握有关内容，书中安排了适当的例题、练习题和思考题。每一章还选入了适量的习题，供读者选用。

《大学物理竞赛精选详解350题》共分八章。前六章按照《理工科类大学物理课程教学基本要求》的前六个板块编写，第七章含《基本要求》的第七、第九两个板块，每章均由“内容精粹”、“解题要术”、“习题精选”、“习题详解”等四节构成。第八章为综合性习题及其详解。全书共选入习题350个。

The subtitle, Nonclassical Fields, is perhaps not as accurate as it might be as a summary of content; or to put it another way, if my aim from the start had been to write a book on this topic, parts of that book would differ significantly from what follows here. Possibly the most important thing missing, and something that should be said, is that there are two quite distinct paths to a definition of nonclassicality in quantum optics. The first is grounded in the existence, or otherwise, of a nonsingular and positrve Glauber-Sudarshan P function. The physical grounding is in the treatment of optical measurements, specifically the photoelectric effect: for a given optical field, can the photoelectron counting statistics, including all correlations, be reproduced by a Poisson process of photoelectron generation driven by a classicallight intensity, allowed most generally to be stochastic? Viewed at a more informallevel, the question asks whether or not the infamous proposal of Bohr, Kramers, and Slater for the interaction of classical light and quantized atoms can be upheld in the presence of the observable photoelectron counting statistics.

The experimental discovery of Bose-Einstein condensation in trapped atomic clouds opened up the exploration of quantum phenomena in a qualitatively new regime. Our aim in the present work is to provide an introduction to this rapidly developing field.
　　The study of Bose-Einstein condensation in dilute gases draws on many different subfields of physics. Atomic physics provides the basic methods for creating and manipulating these systems, and the physical data required to characterize them. Because interactions between atoms play a key role in the behaviour of ultracold atomic clouds, concepts and methods from condensed matter physics are used extensively. Investigations of spatial and temporal correlations of particles provide links to quantum optics, where related studies have been made for photons. Trapped atomic clouds have some similarities to atomic nuclei, and insights from nuclear physics have been helpful in understanding their properties.

在工程系统的各类失效中，断裂失效是最重要的也是危害性最大的，因为大多数断裂事故往往是不可预料、突然性且会产生灾难性的后果，造成重大的经济损失和人员伤亡。鉴于断裂失效在失效学中的重要地位以及裂纹在材料断裂过程中所起的决定性作用，《中国工程院院士文库：裂纹学》将主要围绕断裂这种一级失效模式来展开介绍与裂纹有关的知识。《中国工程院院士文库：裂纹学》可供工程金属材料、机械、失效分析等领域的科研人员和工程技术人员阅读。

PhysicsandPortialDifferentialEquations，Volume//proceedsdirectlyfromVolumeIwithfiveadditionalchaptersthatbridgephysicsandappliedmathematicsinamannerthatiseasilyaccessibletoreaderswithanundergraduate-levelbackgroundinthesedisciplines.Readerswhoaremorefamiliarwithmathematicsthanphysicswilldiscovertheconnectionbetweenvariousphysicalandmechanicaldisciplinesandtheirrelatedmathematicalmodels，whicharedescribedbypartialdifferentialequations（PDEs）.Theauthorsestablishthefundamentalequationsforfieldssuchas·electrodynamics;·fluiddynamics，magnetohydrodynamics，andreactingfluiddynamics;·elastic，thermoelastic，andviscoelasticmechanics;·thekinetictheoryofgases;·specialrelativity;and·quantummechanicsReaderswhoaremorefamiliarwithphysicsthanmathematicswillbenefitfromindepthexplanationsofhowPDEsworkaseffectivemathematicaltoolstomoreclearlyexpressandpresentthebasicconceptsofphysicsThebookdescribesthemathematicalstructuresandfeaturesofthesePDEs，including·thetypesandbasiccharacteristicsoftheequations，·thebehaviorofsolutions，and·somecommonlyusedapproachestosolvingPDEs.Eachchaptercanbereadindependentlyandincludesexercisesandreferences.UsedaloneorinconjunctionwithVolumeI，thisbookisappropriateasatextbookforupper-levelundergraduateandgraduatecoursesandcanalsoserveasareferenceforresearchersinapplicationareasthatusePDEsandinphysicalandnrechanicaldisciplines.

所有的光场都经历随机涨落，有些光场的随机涨落很小，例如许多激光器的输出的光；有些光场的随机涨落相当大，例如从热光源辐射的光。描述涨落的光场的基础理论称为相干理论。最明显的涨落现象是部分偏振。实际上，相干理论所处理的问题不仅是涨落。与常规的处理方法不同，相干理论根据可观测量描述光场并解释这些可观测量，例如光的光谱以及它在传输中如何变化。本书首次给出光的相干与偏振现象的统一理论。这是由于本书作者近期在相关的研究取得突破性的进展，才能用统一处理方法探讨光的相干与偏振这两种现象。