Kvantfysik
6 824 produkter
6 824 produkter
265 kr
»Möt den nya Stephen Hawking«– The Sunday Times
Världen består inte av individuella objekt utan av relationer.
Sedan kvantteorin formulerades har den förändrat vår förståelse av verkligheten i grunden. Men den motsägelsefulla världsbild som framträdde var så gåtfull att fysiker lade frågan om kvantfysikens innebörd åt sidan i över ett halvsekel.
I Helgoland ger Carlo Rovelli gåtan ett svar som är lika elegant som omvälvande. Han visar fram en annan och mer nyanserad verklighet än den som är grundad i elementarpartiklarnas schematiska materialism. En verklighet vars fundamentala grammatik stavas processer, händelser – och relationer.
- Nyhet
352 kr
Skickas inom 3-6 vardagar
89 kr
Våra kroppar är uppbyggda av biljoner mikroskopiska celler, och i cellernas innersta värld gäller kvantfysikens lagar. Kvantfysiken beskriver hur fåglarna hittar hem över tusentals kilometer och hur en ödla kan hänga upp och ner i taket. Kvantfysiken förklarar också fotosyntesen som är grunden för allt liv på jorden den process som ger en maskros kraften att spränga genom asfalten.
I kvantfysikens värld kan en partikel befinna sig på många ställen vid samma tidpunkt. Den kan förflytta sig genom att välja alla vägar mellan två punkter - samtidigt. Och information kan se ut att färdas över stora avstånd utan att det tar någon tid alls. I den mikroskopiska världen kan det se ut som att naturens lagbundenhet faller samman till osäkerhet och slump bara genom att man tittar på den. Men det är faktiskt inte sant den följer bara andra lagar: kvantfysikens skenbart paradoxala vägar i atomernas och molekylernas värld.
Kvantfysiken är också nyckeln till att förstå den genetik och biokemi som till slut förklarar hur vår kropp och vårt medvetande fungerar och kan påverkas. Kunskapen om kvantfysikens betydelse för medicin och biologi kan göra det möjligt att diagnosticera och behandla sjukdomar på nya sätt, och kanske i framtiden besvara de verkligt svåra frågorna hur uppstod och utvecklades livet på jorden?
706 kr
Skickas inom 7-10 vardagar
Changes and additions to the new edition of this classic textbook include a new chapter on symmetries, new problems and examples, improved explanations, more numerical problems to be worked on a computer, new applications to solid state physics, and consolidated treatment of time-dependent potentials.
990 kr
Skickas inom 7-10 vardagar
This book gives a modern, comprehensive introduction to the principles of quantum mechanics, to the main approximation methods and to the application of quantum theory to a wide variety of systems. The needs of students having an average mathematical ability are kept very much in mind, with the avoidance of complex mathematical arguments and any undue compression of material
1 008 kr
Skickas inom 7-10 vardagar
Quantum field theory (QFT) is one of the great achievements of physics, of profound interest to mathematicians. Most pedagogical texts on QFT are geared toward budding professional physicists, however, whereas mathematical accounts are abstract and difficult to relate to the physics. This book bridges the gap. While the treatment is rigorous whenever possible, the accent is not on formality but on explaining what the physicists do and why, using precise mathematical language. In particular, it covers in detail the mysterious procedure of renormalization. Written for readers with a mathematical background but no previous knowledge of physics and largely self-contained, it presents both basic physical ideas from special relativity and quantum mechanics and advanced mathematical concepts in complete detail. It will be of interest to mathematicians wanting to learn about QFT and, with nearly 300 exercises, also to physics students seeking greater rigor than they typically find in their courses. Erratum for the book can be found at michel.talagrand.net/erratum.pdf.
153 kr
Ibland är det enkla faktiskt bäst. Den här smarta guiden förklarar den moderna vetenskapens förbryllande värld. Texterna är korta och informativa och följs åt av pedagogiska bilder så att du snabbt kan få grepp om allt från tankeexperimentet med Schrödingers katt till kvantteleportering.
Oavsett om du pluggar naturvetenskap, vill friska upp minnet, bredda din allmänbildning eller briljera i sociala sammanhang är Kvantfysik på 1 minut fullspäckad med allt du behöver för att snabbt och enkelt förstå kvantfysikens grunder.
794 kr
Skickas inom 7-10 vardagar
Modern Quantum Mechanics is a classic graduate level textbook, covering the main concepts from quantum mechanics in a clear, organized and engaging manner. The original author, J. J. Sakurai, was a renowned particle theorist. This third edition, revised by Jim Napolitano, introduces topics that extend its value into the twenty-first century, such as modern mathematical techniques for advanced quantum mechanical calculations, while at the same time retaining fundamental topics such as neutron interferometer experiments, Feynman path integrals, correlation measurements, and Bell's inequalities. A solutions manual is available.
662 kr
Skickas inom 7-10 vardagar
This modern text describes the remarkable developments in quantum condensed matter physics following the experimental discoveries of quantum Hall effects and high temperature superconductivity in the 1980s. After a review of the phases of matter amenable to an independent particle description, entangled phases of matter are described in an accessible and unified manner. The concepts of fractionalization and emergent gauge fields are introduced using the simplest resonating valence bond insulator with an energy gap, the Z2 spin liquid. Concepts in band topology and the parton method are then combined to obtain a large variety of experimentally relevant gapped states. Correlated metallic states are described, beginning with a discussion of the Kondo effect on magnetic impurities in metals. Metals without quasiparticle excitations are introduced using the Sachdev-Ye-Kitaev model, followed by a discussion of critical Fermi surfaces and strange metals. Numerous end-of-chapter problems expand readers' comprehension and reinforce key concepts.
718 kr
Skickas inom 7-10 vardagar
Quantum mechanics impacts on many areas of physics from pure theory to applications. However it is difficult to interpret, and philosophical contradictions and counter-intuitive results are apparent at a fundamental level. This book presents current understanding of the theory, providing a historical introduction and discussing many of its interpretations. Fully revised from the first edition, this book contains state-of-the-art research including loophole-free experimental Bell test, and theorems on the reality of the wave function including the PBR theorem, and a new section on quantum simulation. More interpretations are now included, and these are described and compared, including discussion of their successes and difficulties. Other sections have been expanded, including quantum error correction codes and the reference section. It is ideal for researchers in physics and maths, and philosophers of science interested in quantum physics and its foundations.
538 kr
Skickas inom 5-8 vardagar
As the study of time has flourished in the physical and human sciences, the philosophy of time has come into its own as a lively and diverse area of academic research. Philosophers investigate not just the metaphysics of time, and our experience and representation of time, but the role of time in ethics and action, and philosophical issues in the sciences of time, especially with regard to quantum mechanics and relativity theory. This Handbook presents twenty-three specially written essays by leading figures in their fields: it is the first comprehensive collaborative study of the philosophy of time, and will set the agenda for future work.
543 kr
Skickas inom 5-8 vardagar
The second edition of this successful textbook provides an up-to-date account of the optical physics of solid state materials. The basic principles of absorption, reflection, luminescence, and light scattering are covered for a wide range of materials, including insulators, semiconductors and metals. The text starts with a review of classical optics, and then moves on to the treatment of optical transition rates by quantum theory. In addition to the traditional discussion of crystalline materials, glasses and molecular solids are also covered. The first edition included a number of subjects that are not normally covered in standard texts, notably semiconductor quantum wells, molecular materials, vibronic solid state lasers, and nonlinear optics. The basic structure of the second edition is unchanged, but all of the chapters have been updated and improved. Futhermore, a number of important new topics have been added, including:· Optical control of spin· Quantum dots· Plasmonics· Negative refraction· Carbon nanostructures (graphene, nanotubes and fullerenes) · NV centres in diamondThe text is aimed at final year undergraduates, masters students and researchers. It is mainly written for physicists, but might also be useful for electrical engineers, materials scientists and physical chemists. The topics are written in a clear tutorial style with worked examples, chapter summaries and exercises. A solutions manual is available on request for instructors.
137 kr
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A Brief History of Time for the 21st CenturyAt the heart of our galaxy lies a monster so deadly, not even light can escape its grasp. Its secrets lie waiting to be discovered. It’s time to explore our universe’s most mysterious inhabitantsBlack Holes At the heart of the Milky Way lies a supermassive black hole 4 million times more massive than our Sun. A place where space and time are so warped that light is trapped if it ventures within 12 million km. According to Einstein, inside lies the end of time. According to 21st-century physics, the reality may be far more bizarre. Black holes lie where the most massive stars used to shine and at the edge of our current understanding. They are naturally occurring objects, the inevitable creations of gravity when too much matter collapses into not enough space. And yet, although the laws of nature predict them, they fail fully to describe them.Black holes are places in space and time where the laws of gravity, quantum physics and thermodynamics collide. Originally thought to be so intellectually troubling that they simply could not exist, it is only in the past few years that we have begun to glimpse a new synthesis; a deep connection between gravity and quantum information theory that describes a holographic universe in which space and time emerge from a network of quantum bits, and wormholes span the void.In this groundbreaking book, Professor Brian Cox and Professor Jeff Forshaw take you to the edge of our understanding of black holes; a scientific journey to the research frontier spanning a century of physics, from Einstein to Hawking and beyond, that ends with the startling conclusion that our world may operate like a giant quantum computer.
329 kr
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Kvantfysikens fader, Max Planck, hamnade mitt i den spricka som nazisterna rev upp mellan civilisation och barbari, vetenskap och terror, sanning och lögn. På grund av sina nära band till judiska vänner och kolleger, fick Max Planck se de flesta av sina arbeten förstöras och sitt namn ställas på glömskans rand under andra världskriget. Men lyckligtvis bevarades en stor del av hans brev för eftervärlden. Där finns bland annat den viktiga korrespondensen med vännen och kollegan Albert Einstein, liksom Plancks vädjanden till Hitler om att skona hans son från döden.
I Brandon Browns prisbelönta biografi får vi följa den visionära fysiker som kom att skissera de grundläggande formlerna för kvantteorin och som tilldelades Nobelpriset 1918. Föga anande man att den vetenskapsnation som han företrädde skulle komma att falla samman, och en grym epok i Tysklands historia ta sin början.
856 kr
It starts by introducing the basic mathematics required for quantum mechanics, and then goes on to present, in detail, the notions of quantum mechanics, entanglement, quantum gates, and quantum algorithms, of which Shor's factorisation and Grover's search algorithm are discussed extensively.
811 kr
Skickas inom 7-10 vardagar
One of the most cited books in physics of all time, Quantum Computation and Quantum Information remains the best textbook in this exciting field of science. This 10th anniversary edition includes an introduction from the authors setting the work in context. This comprehensive textbook describes such remarkable effects as fast quantum algorithms, quantum teleportation, quantum cryptography and quantum error-correction. Quantum mechanics and computer science are introduced before moving on to describe what a quantum computer is, how it can be used to solve problems faster than 'classical' computers and its real-world implementation. It concludes with an in-depth treatment of quantum information. Containing a wealth of figures and exercises, this well-known textbook is ideal for courses on the subject, and will interest beginning graduate students and researchers in physics, computer science, mathematics, and electrical engineering.
- Nyhet
228 kr
Skickas inom 3-6 vardagar
Kvantfysik är ett svårt ämne och denna bok vill reda ut underliga och misstänkt felaktiga resonemang. För det första är verklighetsbegreppet ofta förvirrat. Det är meningslöst att tala om vad som händer innan en mätning görs. Ett exempel är det s.k. ”Schrödingers katt”. Att tilldela exemplet en superposition – katten är både död och levande – är utom mening. Georg cantor söker ’bevisa’ att reella talmängden är större än den naturliga. Intuitivt förstår vi det, men Cantors ’bevis’ håller inte. Kurt Gödels ofullständighetsbevis för aritmetiken och en nedgörande kritik av formalismen, bygger på klasssisk logik, men gör sig skyldig till ett flagrant missbruk av denna logik.
Världens matematiska grund : partikelfysik och kvantmekanik för gymnasieskolan
Inbunden, Svenska, 2020
291 kr
Skickas inom 5-8 vardagar
Världen beskrivs på grundläggande nivå av partikelfysik och kvantmekanik. Det är förståeligt nog ämnen som fascinerar många. De har ett rykte om sig att vara matematiskt komplicerade, vilket är helt sant. Behandlingen i gymnasiet tenderar därför att bli icke-matematisk, vilket är synd. Eleverna missar då den djupare förståelsen av fysiken och får inte upptäcka hur mycket av den matematik de lärt sig som behövs för att förstå världen. Gymnasiets naturvetenskapliga program innehåller mycket matematik. Idén bakom boken är att visa hur djup förståelse vi kan få om universums grundläggande lagar genom att använda så mycket som möjligt av denna matematik. Boken riktar sig till intresserade gymnasieelever och lärare. Den kan även vara intressant för personer som lämnat gymnasiet, men minns sin gymnasiematematik. Den kan användas som kurslitteratur till kurserna matematik specialisering eller naturvetenskaplig fördjupning. Erik Thomé är doktor i fysik vid Uppsala universitet. Han arbetar nu som gymnasielektor i fysik, matematik och filosofi på Öresundsgymnasiet Landskrona.
142 kr
Skickas inom 5-8 vardagar
Quantum physics is not mystifying. The implications are mind-bending, and not yet fully understood, but this revolutionary theory is truly illuminating. It stands as the best explanation of the fundamental nature of our world.‘An authoritative and beautifully written account of the quest to understand quantum theory and the origin of space and time.’ Professor Brian Cox Spanning the history of quantum discoveries, from Einstein and Bohr to the present day, Something Deeply Hidden is the essential guide to the most intriguing subject in science. Acclaimed physicist and writer Sean Carroll debunks the myths, resurrects and reinstates the Many-Worlds interpretation, and presents a new path towards solving the apparent conflict between quantum mechanics and Einstein’s theory of general relativity. In doing so, he fills a gap in the science that has existed for almost a century.A magisterial tour, Something Deeply Hidden encompasses the cosmological and everyday implications of quantum reality and multiple universes. And – finally – it all makes sense.***'Carroll takes us by the hand and with a benign smile and a chatty style, leads us to a place where… at every instant an almost infinite number of copies of you are splitting off to live alternative lives… a wild conceptual ride.' The Sunday Times, BOOKS OF THE YEAR'Like all great writers, Carroll has the remarkable ability of putting the reader utterly at ease with his lucid and addictive prose. He leads you so gently and comfortably into his quantum world that you quickly forget you are being given access to the most profound ideas about the nature of reality.' Jim Al-Khalili'Sean Carroll’s immensely enjoyable Something Deeply Hidden brings readers face-to-face with the fundamental quantum weirdness of the universe – or should I say universes? And by the end, you may catch yourself finding quantum weirdness not all that weird.' Jordan Ellenberg
762 kr
Skickas inom 7-10 vardagar
'Quantum Cosmology' offers a guided introduction to the quantum aspects of the cosmos. Starting with an overview of early universe cosmology, the book builds up to advanced topics such as the Wheeler-DeWitt equation, gravitational path integrals, and the no-boundary proposal for the wave function of the universe. Readers will explore tunneling processes via Coleman-DeLuccia instantons, the quantum origin of primordial fluctuations, the thermodynamics of horizons, and basic notions of string cosmology. Concepts such as wormholes and semi-classical geometry are introduced with clarity and physical motivation. The book assumes some familiarity with general relativity and quantum mechanics, but little prior knowledge of cosmology. It includes a wide range of exercises, with solutions provided. Written in a pedagogical style, it bridges the gap between undergraduate courses and the research level in this frontier area of theoretical physics.
295 kr
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I en fuktig tunnel under Donaufloden och i den varma luften mellan två kanarieöar utfördes i början av millenniet experiment som kastade nytt ljus över kvantmekanikens mysterier. Med hjälp av sammanflätade fotoner lyckades Anton Zeilinger tillsammans med sina kolleger överföra kvantegenskaper mellan partiklar på stora avstånd. Fenomenet som kommit att kallas kvantteleportering öppnar för oanade sätt att lagra och överföra information. En ny era av teknologiska genombrott står för dörren.
Som en pedagogisk introduktion till kvantfysikens värld ger den här boken berättelsen om den vetenskapliga upptäckt som skulle leda hela vägen till 2022 års Nobelpris i fysik.
Med ett förord av Ulf Danielsson.
249 kr
Skickas inom 10-15 vardagar
David Bohm was one of the foremost scientific thinkers and philosophers of our time. Although deeply influenced by Einstein, he was also, more unusually for a scientist, inspired by mysticism. Indeed, in the 1970s and 1980s he made contact with both J. Krishnamurti and the Dalai Lama whose teachings helped shape his work. In both science and philosophy, Bohm's main concern was with understanding the nature of reality in general and of consciousness in particular. In this classic work he develops a theory of quantum physics which treats the totality of existence as an unbroken whole. Writing clearly and without technical jargon, he makes complex ideas accessible to anyone interested in the nature of reality.
586 kr
Skickas inom 7-10 vardagar
Written by noted quantum computing theorist Scott Aaronson, this book takes readers on a tour through some of the deepest ideas of maths, computer science and physics. Full of insights, arguments and philosophical perspectives, the book covers an amazing array of topics. Beginning in antiquity with Democritus, it progresses through logic and set theory, computability and complexity theory, quantum computing, cryptography, the information content of quantum states and the interpretation of quantum mechanics. There are also extended discussions about time travel, Newcomb's Paradox, the anthropic principle and the views of Roger Penrose. Aaronson's informal style makes this fascinating book accessible to readers with scientific backgrounds, as well as students and researchers working in physics, computer science, mathematics and philosophy.
141 kr
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'Quantum mechanics for real. This is the good stuff, the most mysterious aspects of how reality works, set out with crystalline clarity. The place to start' Sean Carroll, physicist, California Institute of Technology, author of The Particle at the End of the UniverseThis is the ultimate practical introduction to quantum mechanics. World-renowned physicist Leonard Susskind and data engineer Art Friedman give you the basic skills you need to tackle this famously difficult topic yourself.They provide clear, lively explanations of basic concepts, introduce the key fields of quantum mechanics and include step-by-step exercises. Making a complex subject 'as simple as possible, but no simpler', this is a practical toolkit for amateur scientists that you won't find anywhere else.
705 kr
Skickas inom 7-10 vardagar
Quantum physics allows entirely new forms of computation and cryptography, which could perform tasks currently impossible on classical devices, leading to an explosion of new algorithms, communications protocols and suggestions for physical implementations of all these ideas. As a result, quantum information has made the transition from an exotic research topic to part of mainstream undergraduate courses in physics. Based on years of teaching experience, this textbook builds from simple fundamental concepts to cover the essentials of the field. Aimed at physics undergraduate students with a basic background in quantum mechanics, it guides readers through theory and experiment, introducing all the central concepts without getting caught up in details. Worked examples and exercises make this useful as a self-study text for those who want a brief introduction before starting on more advanced books. Solutions are available online at www.cambridge.org/9781107014466.
324 kr
Skickas inom 10-15 vardagar
This book reveals glimpses of how the quantum physics of atoms and molecules influences, and even controls, the way our cells function and how we and our fellow animals interact with our environment. Simply put, how birds fly and why grass grows.Certainly, biochemistry and molecular biology are the foundations for the biology of living cells, but there is more—quantum coherence and entanglement influencing the functioning of proteins and enzymes, and strictly speaking, without the quantum phenomena we wouldn’t even be here.In the end, however, this book is based on the solid ground of science, presenting the many fascinating phenomena of how quantum physics makes life possible without any unwarranted mystification.
277 kr
Skickas inom 7-10 vardagar
The developer of path integrals, Nobel Prize–winning physicist Richard Feynman, presents unique insights into this method and its applications. Feynman starts with an intuitive view of fundamental quantum mechanics, gradually introducing path integrals. Later chapters explore more advanced topics, including the perturbation method, quantum electrodynamics, and statistical mechanics. 1965 edition, emended in 2005.
358 kr
Skickas inom 7-10 vardagar
The more science tells us about the world, the stranger it looks. Ever since physics first penetrated the atom, early in this century, what it found there has stood as a radical and unanswered challenge to many of our most cherished conceptions of nature. It has literally been called into question since then whether or not there are always objective matters of fact about the whereabouts of subatomic particles, or about the locations of tables and chairs, or even about the very contents of our thoughts. A new kind of uncertainty has become a principle of science.This book is an original and provocative investigation of that challenge, as well as a novel attempt at writing about science in a style that is simultaneously elementary and deep. It is a lucid and self-contained introduction to the foundations of quantum mechanics, accessible to anyone with a high school mathematics education, and at the same time a rigorous discussion of the most important recent advances in our understanding of that subject, some of which are due to the author himself.
126 kr
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Stephen Hawking's worldwide bestseller, A Brief History of Time, has been a landmark volume in scientific writing. Its author's engaging voice is one reason, and the compelling subjects he addresses is another: the nature of space and time, the role of God in creation, the history and future of the universe. But it is also true that in the years since its publication, readers have repeatedly told Professor Hawking of their great difficulty in understanding some of the book's most important concepts. This is the origin of and the reason for A Briefer History of Time: its author's wish to make its content accessible to readers - as well as to bring it up-to-date with the latest scientific observations and findings.Although this book is literally somewhat 'briefer', it actually expands on the great subjects of the original. Purely technical concepts, such as the mathematics of chaotic boundary conditions, are gone. Conversely, subjects of wide interest that were difficult to follow because they were interspersed throughout the book have now been given entire chapters of their own, including relativity, curved space, and quantum theory.This reorganization has allowed the authors to expand areas of special interest and recent progress, from the latest developments in string theory to exciting developments in the search for a complete, unified theory of all the forces of physics. Like prior editions of the book-but even more so - A Briefer History of Time will guide nonscientists everywhere in the ongoing search for the tantalizing secrets at the heart of time and space.Thirty-eight full-colour illustrations enhance the text and make A Briefer History of Time an exhilarating addition in its own right to the literature of science.
126 kr
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THE NEW YORK TIMES BESTSELLER‘Neat, and extremely simple: only a deep thinker such as Sean Carroll could introduce the complexity of Einstein’s general relativity in such a luminous and straightforward manner.’Carlo Rovelli, author of Seven Brief Lessons on PhysicsImmense, strange and infinite, the world of modern physics often feels impenetrable to the undiscerning eye – a jumble of muons, gluons and quarks, impossible to explain without several degrees and a research position at CERN.But it doesn’t have to be this way!Allow world-renowned theoretical physicist and bestselling author Sean Carroll to guide you through the biggest ideas in the universe. Elegant and simple, Carroll unravels a web of theory to get to the heart of the truths they represent about the world around us.—In Quanta and Fields, the second in this landmark trilogy, Carroll delves into the baffling and beautiful world of quantum mechanics. From Schrödinger to Feynman, Carroll travels through the quantum revolution with the greatest minds of the twentieth century. Exploring how several decades of research overturned centuries of convention, Carroll provides a dazzling tour of the most exciting ideas in modern science.