The Principle of Least Action PDF Download
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Author: Alberto G. Rojo
Publisher: Cambridge University Press
ISBN: 0521869021
Category : Mathematics
Languages : en
Pages : 269
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Book Description
This text brings history and the key fields of physics together to present a unique technical discussion of the principles of least action.
Author: Alberto G. Rojo
Publisher: Cambridge University Press
ISBN: 0521869021
Category : Mathematics
Languages : en
Pages : 269
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Book Description
This text brings history and the key fields of physics together to present a unique technical discussion of the principles of least action.
Author:
Publisher:
ISBN: 9780201021165
Category : Electromagnetism
Languages : en
Pages :
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Book Description
Author: Jennifer Coopersmith
Publisher: Oxford University Press
ISBN: 0191060720
Category : Science
Languages : en
Pages : 280
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Book Description
This is a rare book on a rare topic: it is about 'action' and the Principle of Least Action. A surprisingly well-kept secret, these ideas are at the heart of physical science and engineering. Physics is well known as being concerned with grand conservatory principles (e.g. the conservation of energy) but equally important is the optimization principle (such as getting somewhere in the shortest time or with the least resistance). The book explains: why an optimization principle underlies physics, what action is, what `the Hamiltonian' is, and how new insights into energy, space, and time arise. It assumes some background in the physical sciences, at the level of undergraduate science, but it is not a textbook. The requisite derivations and worked examples are given but may be skim-read if desired. The author draws from Cornelius Lanczos's book "The Variational Principles of Mechanics" (1949 and 1970). Lanczos was a brilliant mathematician and educator, but his book was for a postgraduate audience. The present book is no mere copy with the difficult bits left out - it is original, and a popularization. It aims to explain ideas rather than achieve technical competence, and to show how Least Action leads into the whole of physics.
Author: Karl Friedrich Siburg
Publisher: Springer Science & Business Media
ISBN: 9783540219446
Category : Computers
Languages : en
Pages : 148
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Book Description
New variational methods by Aubry, Mather, and Mane, discovered in the last twenty years, gave deep insight into the dynamics of convex Lagrangian systems. This book shows how this Principle of Least Action appears in a variety of settings (billiards, length spectrum, Hofer geometry, modern symplectic geometry). Thus, topics from modern dynamical systems and modern symplectic geometry are linked in a new and sometimes surprising way. The central object is Mather’s minimal action functional. The level is for graduate students onwards, but also for researchers in any of the subjects touched in the book.
Author: Richard Phillips Feynman
Publisher: World Scientific
ISBN: 9812563660
Category : Science
Languages : en
Pages : 142
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Book Description
Richard Feynman's never previously published doctoral thesis formed the heart of much of his brilliant and profound work in theoretical physics. Entitled ?The Principle of Least Action in Quantum Mechanics," its original motive was to quantize the classical action-at-a-distance electrodynamics. Because that theory adopted an overall space?time viewpoint, the classical Hamiltonian approach used in the conventional formulations of quantum theory could not be used, so Feynman turned to the Lagrangian function and the principle of least action as his points of departure.The result was the path integral approach, which satisfied ? and transcended ? its original motivation, and has enjoyed great success in renormalized quantum field theory, including the derivation of the ubiquitous Feynman diagrams for elementary particles. Path integrals have many other applications, including atomic, molecular, and nuclear scattering, statistical mechanics, quantum liquids and solids, Brownian motion, and noise theory. It also sheds new light on fundamental issues like the interpretation of quantum theory because of its new overall space?time viewpoint.The present volume includes Feynman's Princeton thesis, the related review article ?Space?Time Approach to Non-Relativistic Quantum Mechanics? [Reviews of Modern Physics 20 (1948), 367?387], Paul Dirac's seminal paper ?The Lagrangian in Quantum Mechanics'' [Physikalische Zeitschrift der Sowjetunion, Band 3, Heft 1 (1933)], and an introduction by Laurie M Brown.
Author: Douglas Cline
Publisher:
ISBN: 9780998837277
Category :
Languages : en
Pages :
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Book Description
Two dramatically different philosophical approaches to classical mechanics were proposed during the 17th - 18th centuries. Newton developed his vectorial formulation that uses time-dependent differential equations of motion to relate vector observables like force and rate of change of momentum. Euler, Lagrange, Hamilton, and Jacobi, developed powerful alternative variational formulations based on the assumption that nature follows the principle of least action. These variational formulations now play a pivotal role in science and engineering.This book introduces variational principles and their application to classical mechanics. The relative merits of the intuitive Newtonian vectorial formulation, and the more powerful variational formulations are compared. Applications to a wide variety of topics illustrate the intellectual beauty, remarkable power, and broad scope provided by use of variational principles in physics.The second edition adds discussion of the use of variational principles applied to the following topics:(1) Systems subject to initial boundary conditions(2) The hierarchy of related formulations based on action, Lagrangian, Hamiltonian, and equations of motion, to systems that involve symmetries.(3) Non-conservative systems.(4) Variable-mass systems.(5) The General Theory of Relativity.Douglas Cline is a Professor of Physics in the Department of Physics and Astronomy, University of Rochester, Rochester, New York.
Author: Wolfgang Yourgrau
Publisher: Courier Corporation
ISBN: 0486151131
Category : Science
Languages : en
Pages : 222
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Book Description
DIVHistorical, theoretical survey with many insights, much hard-to-find material. Hamilton’s principle, Hamilton-Jacobi equation, etc. /div
Author: Alain J Brizard
Publisher: World Scientific Publishing Company
ISBN: 9814623644
Category : Science
Languages : en
Pages : 324
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Book Description
An Introduction to Lagrangian Mechanics begins with a proper historical perspective on the Lagrangian method by presenting Fermat's Principle of Least Time (as an introduction to the Calculus of Variations) as well as the principles of Maupertuis, Jacobi, and d'Alembert that preceded Hamilton's formulation of the Principle of Least Action, from which the Euler-Lagrange equations of motion are derived. Other additional topics not traditionally presented in undergraduate textbooks include the treatment of constraint forces in Lagrangian Mechanics; Routh's procedure for Lagrangian systems with symmetries; the art of numerical analysis for physical systems; variational formulations for several continuous Lagrangian systems; an introduction to elliptic functions with applications in Classical Mechanics; and Noncanonical Hamiltonian Mechanics and perturbation theory.The Second Edition includes a larger selection of examples and problems (with hints) in each chapter and continues the strong emphasis of the First Edition on the development and application of mathematical methods (mostly calculus) to the solution of problems in Classical Mechanics.New material has been added to most chapters. For example, a new derivation of the Noether theorem for discrete Lagrangian systems is given and a modified Rutherford scattering problem is solved exactly to show that the total scattering cross section associated with a confined potential (i.e., which vanishes beyond a certain radius) yields the hard-sphere result. The Frenet-Serret formulas for the Coriolis-corrected projectile motion are presented, where the Frenet-Serret torsion is shown to be directly related to the Coriolis deflection, and a new treatment of the sleeping-top problem is given.
Author: W. A. Roberts
Publisher:
ISBN: 9780975090312
Category : Art and science
Languages : en
Pages : 167
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Book Description
Author: P. Koslowski
Publisher: Springer Science & Business Media
ISBN: 9781402003646
Category : Business & Economics
Languages : en
Pages : 300
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Book Description
The theory of ethical economy analyses the ethical presuppositions of the market economy. It demonstrates that ethics is the pre-coordination in the motives of the economic agents anteceding the coordination of the price system in the market process. Ethical economy develops a positive theory of economic, ethical, and religious coordination of self-interested action described as a super-assurance game of prisoners' dilemma situations. It conceptualises ethics as the corrective of market failure and religion as the corrective of ethics failure. The formal ethics of coordination is then complemented by a theory of the material-substantive ethics of value qualities. One principle of ethical economy is the classical principle of double effect that is used for a theory of managerial and general decision-making. Unintended side-effects (externalities) are a central problem of decisions of large impact. Management decision making must exploit the potential for positive side-effects and control the negative side-effects of managerial decisions. The theory of ethical economy analyses the principles of just price and fair pricing and the relevance of the theory of just price for the pricing behaviour of the modern firm. Principles of Ethical Economy forms a theoretical synthesis of the market theory of modern economics and of the natural right tradition of ethics. It creates new insights into the ethics of the market as well as in the economics presuppositions and consequences of ethical duties, virtues, and goods.
