Hypersymmetry

Author : György Darvas
Publisher : Walter de Gruyter GmbH & Co KG
Page : 163 pages
File Size : 46,8 Mb
Release : 2020-12-16
Category : Science
ISBN : 9783110713480

Get Book

Hypersymmetry by György Darvas Pdf

The book describes how field-charges, split into isotopic pairs, can commute and identifies the group of transformations that governs this exchange between their states. Invariance under this group is defined as Hypersymmetry. The book develops the physical consequences of Hypersymmetry such as conserved property, quanta and mediating bosons of the interaction field. Since all this expands beyond the standard model, the work determines the energy limits of the applicability of Hypersymmetry and discusses, how to remove the unwanted mass of the predicted set of bosons. Finally, it presents how the model can be applied in the four fundamental interactions. • Comprehensive work covering recent research. • Detailed calculations for a step by step understanding. • Useful reading for master students and researchers in theoretical and experimental physics. • A practical textbook for courses on the physics of the isotopic field-charges, their conservation and interactions.

Author : Istvan Hargittai,Magdolna Hargittai
Publisher : Springer Science & Business Media
Page : 475 pages
File Size : 50,9 Mb
Release : 2007-08-29
Category : Science
ISBN : 9780585312347

Get Book

Symmetry through the Eyes of a Chemist by Istvan Hargittai,Magdolna Hargittai Pdf

We have been gratified by the warm reception of our book, by reviewers, colleagues, and students alike. Our interest in the subject matter of this book has not decreased since its first appearance; on the contrary. The first and second editions envelop eight other symmetry-related books in the creation of which we have participated: I. Hargittai (ed.), Symmetry: Unifying Human Understanding, Pergamon Press, New York, 1986. I. Hargittai and B. K. Vainshtein (eds.), Crystal Symmetries. Shubnikov Centennial Papers, Pergamon Press, Oxford, 1988. M. Hargittai and I. Hargittai, Fedezziikf6l a szimmetri6t! (Discover Sym- try, in Hungarian), Tank6nyvkiad6, Budapest, 1989. I. Hargittai (ed.), Symmetry 2: Unifying Human Understanding, Pergamon Press, Oxford, 1989. I. Hargittai (ed.), Quasicrystals, Networks, and Molecules of Fivefold Sym- try, VCH, New York, 1990. I. Hargittai (ed.), Fivefold Symmetry, World Scientific, Singapore, 1992. I. Hargittai and C. A. Pickover (eds.), Spiral Symmetry, World Scientific, Singapore, 1992. I. Hargittai and M. Hargittai, Symmetry: A Unifying Concept, Shelter Publi- tions, Bolinas, California, 1994. We have also pursued our molecular structure research, and some books have appeared related to these activities: vi Preface to the Second Edition I. Hargittai and M. Hargittai (eds.), Stereochemical Applications of Gas-Phase Electron Diffraction, Parts A and B, VCH, New York, 1988. R. Gillespie and I. Hargittai, VSEPR Model of Molecular Geometry, Allyn and Bacon, Boston, 1991. A. Domenicano and I. Hargittai (eds.), Accurate Molecular Structures, Oxford University Press, Oxford, 1992.

Author : Magdolna Hargittai,Istvan Hargittai
Publisher : Springer Science & Business Media
Page : 528 pages
File Size : 48,7 Mb
Release : 2009-02-28
Category : Science
ISBN : 9781402056284

Get Book

Symmetry through the Eyes of a Chemist by Magdolna Hargittai,Istvan Hargittai Pdf

It is gratifying to launch the third edition of our book. Its coming to life testi?es about the task it has ful?lled in the service of the com- nity of chemical research and learning. As we noted in the Prefaces to the ?rst and second editions, our book surveys chemistry from the point of view of symmetry. We present many examples from ch- istry as well as from other ?elds to emphasize the unifying nature of the symmetry concept. Our aim has been to provide aesthetic pl- sure in addition to learning experience. In our ?rst Preface we paid tribute to two books in particular from which we learned a great deal; they have in?uenced signi?cantly our approach to the subject matter of our book. They are Weyl’s classic, Symmetry, and Shubnikov and Koptsik’s Symmetry in Science and Art. The structure of our book has not changed. Following the Int- duction (Chapter 1), Chapter 2 presents the simplest symmetries using chemical and non-chemical examples. Molecular geometry is discussed in Chapter 3. The next four chapters present gro- theoretical methods (Chapter 4) and, based on them, discussions of molecular vibrations (Chapter 5), electronic structures (Chapter 6), and chemical reactions (Chapter 7). For the last two chapters we return to a qualitative treatment and introduce space-group sym- tries (Chapter 8), concluding with crystal structures (Chapter 9). For the third edition we have further revised and streamlined our text and renewed the illustrative material.

Author : Sergio Ferrara
Publisher : World Scientific
Page : 1371 pages
File Size : 43,5 Mb
Release : 1987-10-01
Category : Science
ISBN : 9789814513531

Get Book

Supersymmetry: Lectures And Reprints (In 2 Volumes) by Sergio Ferrara Pdf

These volumes, a collection of a series of articles with commentary notes by the editor, describe supersymmetric theories for particle interactions from the earliest developments to the latest advancements. The book, divided into two volumes, will mainly focus its attention on subjects related to the application of N = 1 supersymmetry and supergravity to unified theories, encompassing all fundamental forces of nature. Particular emphasis is given to the ultraviolet cancellations in supersymmetric field theories, naturalness and hierarchy of scales, spontaneous symmetry breaking, super-Higgs effect and its applications to high energy physics. Both perturbative and non-perturbative aspects of supersymmetric field theories are covered. Over a hundred seminar papers are reprinted in these volumes.

Author : Brink Lars,Henneaux Marc,Vasiliev Mikhail A
Publisher : World Scientific
Page : 404 pages
File Size : 50,8 Mb
Release : 2016-11-01
Category : Science
ISBN : 9789813144118

Get Book

Higher Spin Gauge Theories by Brink Lars,Henneaux Marc,Vasiliev Mikhail A Pdf

Symmetries play a fundamental role in physics. Non-Abelian gauge symmetries are the symmetries behind theories for massless spin-1 particles, while the reparametrization symmetry is behind Einstein's gravity theory for massless spin-2 particles. In supersymmetric theories these particles can be connected also to massless fermionic particles. Does Nature stop at spin-2 or can there also be massless higher spin theories. In the past strong indications have been given that such theories do not exist. However, in recent times ways to evade those constraints have been found and higher spin gauge theories have been constructed. With the advent of the AdS/CFT duality correspondence even stronger indications have been given that higher spin gauge theories play an important role in fundamental physics. All these issues were discussed at a recent international workshop in Singapore where the leading scientists in the field participated. This volume presents an up-to-date, detailed overview of the theories including its historic background, as well as the latest accomplishments in understanding the foundational properties of higher spin physics.

Author : Anonim
Publisher : Unknown
Page : 738 pages
File Size : 47,5 Mb
Release : 1994
Category : Chemistry, Physical and theoretical
ISBN : UOM:39015028263237

Get Book

Russian Journal of Physical Chemistry by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 980 pages
File Size : 46,5 Mb
Release : 1993
Category : Chemistry
ISBN : CORNELL:31924063375756

Get Book

Acta Chimica Hungarica by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 604 pages
File Size : 55,8 Mb
Release : 1999-07
Category : Crystallography
ISBN : STANFORD:36105028743099

Get Book

Crystallography Reports by Anonim Pdf

Current Russian research in crystallography.

Author : Anonim
Publisher : Unknown
Page : 542 pages
File Size : 55,6 Mb
Release : 1980
Category : Coordination compounds
ISBN : UCLA:L0064152341

Get Book

Soviet Journal of Coordination Chemistry by Anonim Pdf

Author : Emil Makovicky
Publisher : Walter de Gruyter GmbH & Co KG
Page : 260 pages
File Size : 43,5 Mb
Release : 2016-08-22
Category : Science
ISBN : 9783110417142

Get Book

Symmetry by Emil Makovicky Pdf

A large range of symmetries in art is presented through clear and aesthetically outstanding examples of historical ornaments. Compendious comments illustrate the selected photographic material by addressing the interested and specialist reader alike. Contents: Introduction Fundamental categories The convenient start: Plane groups of symmetry Intertwined patterns: Layer groups of symmetry Two-colored periodic ornamentation Polychromatic patterns Beyond 2D groups: Hypersymmetry, superstructures, two symmetries in one pattern, the "order-disorder" patterns, homothety and similarity, inversion and nonlinear patterns Quasiperiodic patterns Fractals and fractal character Style and symmetry – symmetry and style References Index

Author : Mark Ladd,Rex Palmer
Publisher : Springer Science & Business Media
Page : 784 pages
File Size : 49,8 Mb
Release : 2014-07-08
Category : Science
ISBN : 9781461439547

Get Book

Structure Determination by X-ray Crystallography by Mark Ladd,Rex Palmer Pdf

The advances in and applications of x-ray and neutron crystallography form the essence of this new edition of this classic textbook, while maintaining the overall plan of the book that has been well received in the academic community since the first edition in 1977. X-ray crystallography is a universal tool for studying molecular structure, and the complementary nature of neutron diffraction crystallography permits the location of atomic species in crystals which are not easily revealed by X-ray techniques alone, such as hydrogen atoms or other light atoms in the presence of heavier atoms. Thus, a chapter discussing the practice of neutron diffraction techniques, with examples, broadens the scope of the text in a highly desirable way. As with previous editions, the book contains problems to illustrate the work of each chapter, and detailed solutions are provided. Mathematical procedures related to the material of the main body of the book are not discussed in detail, but are quoted where needed with references to standard mathematical texts. To address the computational aspect of crystallography, the suite of computer programs from the fourth edition has been revised and expanded. The programs enable the reader to participate fully in many of the aspects of x-ray crystallography discussed in the book. In particular, the program system XRAY* is interactive, and enables the reader to follow through, at the monitor screen, the computational techniques involved in single-crystal structure determination, albeit in two dimensions, with the data sets provided. Exercises for students can be found in the book, and solutions are available to instructors.

Author : Mark F.C. Ladd,Rex A. Palmer
Publisher : Springer Science & Business Media
Page : 850 pages
File Size : 51,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461501015

Get Book

Structure Determination by X-ray Crystallography by Mark F.C. Ladd,Rex A. Palmer Pdf

I was highly flattered when I was asked by Mark Ladd and Rex Palmer if I would write the Foreword to this Fourth Edition of their book. "Ladd & Palmer" is such a well-known and classic book on the subject of crystal structure determination, one of the standards in the field: I did feel daunted by the prospect, and wondered if I could do justice to it. The determination of crystal structures by X-ray crystallography has come a long way since the 1912 discoveries of von Laue and the Braggs. In the intervening years great advances have been made, so that today it is almost taken for granted that crystal structures can be determined in which hundreds, if not thousands, of sepa rate atomic positions can be found with apparent ease. In the early years the struc tures of relatively simple materials, such as the alkali halides, were often argued over and even disputed, whereas today we routinely see published structures of most complex molecular crystals, including the structures of viruses and proteins.

Author : A. Kitaigorodskii
Publisher : Springer Science & Business Media
Page : 285 pages
File Size : 40,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781475703405

Get Book

The Theory of Crystal Structure Analysis by A. Kitaigorodskii Pdf

Structure analysis is based on the phenomena of the diffraction of radia tion by materials. In the first ten to twenty years after Laue's discovery, a very complete theory was developed for the diffraction of x-rays and, later, of electrons. This theory led to equations by means of which it was possible to compute the intensity pattern for a given structure. The theory of structure analysis came to mean that of the diffraction of radiation. In 1935, Patterson pointed out a way leading to the solution of the inverse problem: the finding of the structure from a given intensity distribution pattern. At first the conservatism of researchers, and then the war, hampered the de velopment and broad application of the ideas set forth in this work. It was only during the last ten years that all the rich possibilities of the Patterson method - the method of the analysis of the convolution of the electron density - were brought to light and applied in practice.

Author : Mark Ladd
Publisher : World Scientific
Page : 530 pages
File Size : 49,7 Mb
Release : 2019-11-19
Category : Science
ISBN : 9781786346339

Get Book

The Essence Of Crystallography by Mark Ladd Pdf

'To summarise, Professor Ladd has written a highly engaging text designed to provide the underlying principles of crystal structure determination through X-ray diffraction data. This text would be most appropriate for an early stage postgraduate or researcher interested in learning both the underlying principles of crystallography and gaining some practice with structure-solving software.'Contemporary PhysicsDesigned for those who wish to understand and engage with the principles behind the process of crystal structure determination by X-ray diffraction, this title contains a comprehensive series of chapters, each of which concludes with a set of problems, for which solutions are provided. An ideal resource for senior undergraduates and early-stage postgraduates, The Essence of Crystallography has an accompanying website with programs written for the text, including an interactive simulation of crystal structure determination using prepared intensity data sets.

Author : Zhengbing Hu,Sergey V. Petoukhov,Matthew He
Publisher : Springer
Page : 787 pages
File Size : 51,5 Mb
Release : 2019-05-16
Category : Technology & Engineering
ISBN : 9783030120825

Get Book

Advances in Artificial Systems for Medicine and Education II by Zhengbing Hu,Sergey V. Petoukhov,Matthew He Pdf

This book includes the proceedings of the Second International Conference of Artificial Intelligence, Medical Engineering, Education (AIMEE2018), held in Moscow, Russia, on 6–8 October 2018. The conference covered advances in the development of artificial intelligence systems and their applications in various fields, from medicine and technology to education. The papers presented in the book discuss topics in mathematics and biomathematics; medical approaches; and technological and educational approaches. Given the rapid development of artificial intelligence systems, the book highlights the need for more intensive training for a growing number of specialists, particularly in medical engineering, to increase the effectiveness of medical diagnosis and treatment. The book is intended for specialists, students and other readers who would like to know where artificial intelligence systems can beneficially be applied in the future.