Non-critical String Theory

Non-critical String Theory PDF Author: Stanislav Klimenko
Publisher: Nova Publishers
ISBN: 9781594542671
Category : Science
Languages : en
Pages : 224

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Book Description
The relativistic string theory was born in 1960s. The stimulus was an observation that the dual model of hadronic interactions proposed by Veneziano is adequate not to the quantum theory of usual (null-dimensional) particles but to the theory of one-dimensional relativistic objects -- the strings. It has been immediately found that a self-consistent quantum theory of (bosonic) relativistic strings can be constructed in frames of standard quantisation scheme only in a space-time of dimension 26. Inclusion of fermions has decreased this critical dimension to 10. However, it is evident from the experiment, that elementary particles and their constituents 'live' in the space-time of dimension 4. The attempt to show that extra 6 dimensions are compactified on the scale of Planck's length, in the spirit of old ideas by Kaluza-Klein, just created further complications. This book differs from traditional presentations of the classical and quantum theory of relativistic strings by two aspects. First, it proposes and consistently implements an idea of mathematical modelling and computer visualisation of topologically non-trivial solutions of the classical equations of motion of relativistic strings. Second, on this basis it successfully implements a quantisation scheme, originating from the papers by G P Pron'ko, which uses a different set of dynamical variables, canonically equivalent to the variables of standard scheme, in frames of Hamiltonian formalism and Dirac's quantisation procedure.

Non-critical String Theory

Non-critical String Theory PDF Author: Stanislav Klimenko
Publisher: Nova Publishers
ISBN: 9781594542671
Category : Science
Languages : en
Pages : 224

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Book Description
The relativistic string theory was born in 1960s. The stimulus was an observation that the dual model of hadronic interactions proposed by Veneziano is adequate not to the quantum theory of usual (null-dimensional) particles but to the theory of one-dimensional relativistic objects -- the strings. It has been immediately found that a self-consistent quantum theory of (bosonic) relativistic strings can be constructed in frames of standard quantisation scheme only in a space-time of dimension 26. Inclusion of fermions has decreased this critical dimension to 10. However, it is evident from the experiment, that elementary particles and their constituents 'live' in the space-time of dimension 4. The attempt to show that extra 6 dimensions are compactified on the scale of Planck's length, in the spirit of old ideas by Kaluza-Klein, just created further complications. This book differs from traditional presentations of the classical and quantum theory of relativistic strings by two aspects. First, it proposes and consistently implements an idea of mathematical modelling and computer visualisation of topologically non-trivial solutions of the classical equations of motion of relativistic strings. Second, on this basis it successfully implements a quantisation scheme, originating from the papers by G P Pron'ko, which uses a different set of dynamical variables, canonically equivalent to the variables of standard scheme, in frames of Hamiltonian formalism and Dirac's quantisation procedure.

String Theory and M-Theory

String Theory and M-Theory PDF Author: Katrin Becker
Publisher: Cambridge University Press
ISBN: 9780521860697
Category : Science
Languages : en
Pages : 756

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Book Description
String theory is one of the most exciting and challenging areas of modern theoretical physics. This book guides the reader from the basics of string theory to recent developments. It introduces the basics of perturbative string theory, world-sheet supersymmetry, space-time supersymmetry, conformal field theory and the heterotic string, before describing modern developments, including D-branes, string dualities and M-theory. It then covers string geometry and flux compactifications, applications to cosmology and particle physics, black holes in string theory and M-theory, and the microscopic origin of black-hole entropy. It concludes with Matrix theory, the AdS/CFT duality and its generalizations. This book is ideal for graduate students and researchers in modern string theory, and will make an excellent textbook for a one-year course on string theory. It contains over 120 exercises with solutions, and over 200 homework problems with solutions available on a password protected website for lecturers at www.cambridge.org/9780521860697.

2D-Gravity in Non-Critical Strings

2D-Gravity in Non-Critical Strings PDF Author: E. Abdalla
Publisher: Springer Science & Business Media
ISBN: 3540483365
Category : Science
Languages : en
Pages : 325

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Book Description
A comprehensive survey of the use of the Liouville (and super-Liouville) equation in (super)string theory outside the critical dimension, and of the complementary approach based on the discretized space-time - known as the matrix model approach. The authors pay particular attention to supersymmetry, both in the continuum formulation and through the consideration of the super-eigenvalue problem. The methods presented here are important in a large number of complex problems, e.g. random surfaces, 2-D gravity and large-N quantum chromodynamics, and this comparitive study of the different methods permits a cross-evaluation of the results when both methods are valid, combined with new predictions when only one of the methods may be applied.

Why String Theory?

Why String Theory? PDF Author: Joseph Conlon
Publisher: CRC Press
ISBN: 1482242494
Category : Mathematics
Languages : en
Pages : 256

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Book Description
Physics World's 'Book of the Year' for 2016 An Entertaining and Enlightening Guide to the Who, What, and Why of String Theory, now also available in an updated reflowable electronic format compatible with mobile devices and e-readers. During the last 50 years, numerous physicists have tried to unravel the secrets of string theory. Yet why do these scientists work on a theory lacking experimental confirmation? Why String Theory? provides the answer, offering a highly readable and accessible panorama of the who, what, and why of this large aspect of modern theoretical physics. The author, a theoretical physics professor at the University of Oxford and a leading string theorist, explains what string theory is and where it originated. He describes how string theory fits into physics and why so many physicists and mathematicians find it appealing when working on topics from M-theory to monsters and from cosmology to superconductors.

Not Even Wrong

Not Even Wrong PDF Author: Peter Woit
Publisher: Basic Books
ISBN: 046500363X
Category : Science
Languages : en
Pages : 336

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Book Description
At what point does theory depart the realm of testable hypothesis and come to resemble something like aesthetic speculation, or even theology? The legendary physicist Wolfgang Pauli had a phrase for such ideas: He would describe them as "not even wrong," meaning that they were so incomplete that they could not even be used to make predictions to compare with observations to see whether they were wrong or not. In Peter Woit's view, superstring theory is just such an idea. In Not Even Wrong , he shows that what many physicists call superstring "theory" is not a theory at all. It makes no predictions, even wrong ones, and this very lack of falsifiability is what has allowed the subject to survive and flourish. Not Even Wrong explains why the mathematical conditions for progress in physics are entirely absent from superstring theory today and shows that judgments about scientific statements, which should be based on the logical consistency of argument and experimental evidence, are instead based on the eminence of those claiming to know the truth. In the face of many books from enthusiasts for string theory, this book presents the other side of the story.

String Theory in a Nutshell

String Theory in a Nutshell PDF Author: Elias Kiritsis
Publisher: Princeton University Press
ISBN: 0691188963
Category : Science
Languages : en
Pages : 883

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Book Description
The essential introduction to modern string theory—now fully expanded and revised String Theory in a Nutshell is the definitive introduction to modern string theory. Written by one of the world’s leading authorities on the subject, this concise and accessible book starts with basic definitions and guides readers from classic topics to the most exciting frontiers of research today. It covers perturbative string theory, the unity of string interactions, black holes and their microscopic entropy, the AdS/CFT correspondence and its applications, matrix model tools for string theory, and more. It also includes 600 exercises and serves as a self-contained guide to the literature. This fully updated edition features an entirely new chapter on flux compactifications in string theory, and the chapter on AdS/CFT has been substantially expanded by adding many applications to diverse topics. In addition, the discussion of conformal field theory has been extensively revised to make it more student-friendly. The essential one-volume reference for students and researchers in theoretical high-energy physics Now fully expanded and revised Provides expanded coverage of AdS/CFT and its applications, namely the holographic renormalization group, holographic theories for Yang-Mills and QCD, nonequilibrium thermal physics, finite density physics, and entanglement entropy Ideal for mathematicians and physicists specializing in theoretical cosmology, QCD, and novel approaches to condensed matter systems An online illustration package is available to professors

The Little Book of String Theory

The Little Book of String Theory PDF Author: Steven S. Gubser
Publisher: Princeton University Press
ISBN: 1400834430
Category : Science
Languages : en
Pages : 183

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Book Description
The essential beginner's guide to string theory The Little Book of String Theory offers a short, accessible, and entertaining introduction to one of the most talked-about areas of physics today. String theory has been called the "theory of everything." It seeks to describe all the fundamental forces of nature. It encompasses gravity and quantum mechanics in one unifying theory. But it is unproven and fraught with controversy. After reading this book, you'll be able to draw your own conclusions about string theory. Steve Gubser begins by explaining Einstein's famous equation E = mc2, quantum mechanics, and black holes. He then gives readers a crash course in string theory and the core ideas behind it. In plain English and with a minimum of mathematics, Gubser covers strings, branes, string dualities, extra dimensions, curved spacetime, quantum fluctuations, symmetry, and supersymmetry. He describes efforts to link string theory to experimental physics and uses analogies that nonscientists can understand. How does Chopin's Fantasie-Impromptu relate to quantum mechanics? What would it be like to fall into a black hole? Why is dancing a waltz similar to contemplating a string duality? Find out in the pages of this book. The Little Book of String Theory is the essential, most up-to-date beginner's guide to this elegant, multidimensional field of physics.

Applications of Random Matrices in Physics

Applications of Random Matrices in Physics PDF Author: Édouard Brezin
Publisher: Springer Science & Business Media
ISBN: 140204531X
Category : Science
Languages : en
Pages : 519

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Book Description
Random matrices are widely and successfully used in physics for almost 60-70 years, beginning with the works of Dyson and Wigner. Although it is an old subject, it is constantly developing into new areas of physics and mathematics. It constitutes now a part of the general culture of a theoretical physicist. Mathematical methods inspired by random matrix theory become more powerful, sophisticated and enjoy rapidly growing applications in physics. Recent examples include the calculation of universal correlations in the mesoscopic system, new applications in disordered and quantum chaotic systems, in combinatorial and growth models, as well as the recent breakthrough, due to the matrix models, in two dimensional gravity and string theory and the non-abelian gauge theories. The book consists of the lectures of the leading specialists and covers rather systematically many of these topics. It can be useful to the specialists in various subjects using random matrices, from PhD students to confirmed scientists.

String Theory For Dummies

String Theory For Dummies PDF Author: Andrew Zimmerman Jones
Publisher: John Wiley & Sons
ISBN: 047046724X
Category : Science
Languages : en
Pages : 387

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Book Description
A clear, plain-English guide to this complex scientific theory String theory is the hottest topic in physics right now, with books on the subject (pro and con) flying out of the stores. String Theory For Dummies offers an accessible introduction to this highly mathematical "theory of everything," which posits ten or more dimensions in an attempt to explain the basic nature of matter and energy. Written for both students and people interested in science, this guide explains concepts, discusses the string theory's hypotheses and predictions, and presents the math in an approachable manner. It features in-depth examples and an easy-to-understand style so that readers can understand this controversial, cutting-edge theory.

Superstrings

Superstrings PDF Author: P. C. W. Davies
Publisher: Cambridge University Press
ISBN: 9780521437752
Category : Science
Languages : en
Pages : 248

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Book Description
Superstring theory is one of the most exciting and actively pursued branches of physics today. The far-reaching claims made for this theory would, if correct, provide the much sought-after Theory of Everything, the unification of physics. It would enable the fundamental building blocks of matter to be identified and amalgamated in a common description, with a unified theory of all the forces of nature. This book explains the theory for laymen, in an introduction to the subject which originated in the BBC Radio programme, Desperately Seeking Superstrings. A clear, concise, non-mathematical explanation of the theory and its profound implications is followed by transcripts of interviews with all the most important physicists involved in its development. Superstrings makes a fascinating topic at the forefront of modern scientific research accessible to physicists, philosophers and general readers alike.