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Generated Dynamics of Markov and Quantum Processes (Hardcover, 1st ed. 2016): Martin Janssen Generated Dynamics of Markov and Quantum Processes (Hardcover, 1st ed. 2016)
Martin Janssen
R2,262 R2,005 Discovery Miles 20 050 Save R257 (11%) Ships in 12 - 19 working days

This book presents Markov and quantum processes as two sides of a coin called generated stochastic processes. It deals with quantum processes as reversible stochastic processes generated by one-step unitary operators, while Markov processes are irreversible stochastic processes generated by one-step stochastic operators. The characteristic feature of quantum processes are oscillations, interference, lots of stationary states in bounded systems and possible asymptotic stationary scattering states in open systems, while the characteristic feature of Markov processes are relaxations to a single stationary state. Quantum processes apply to systems where all variables, that control reversibility, are taken as relevant variables, while Markov processes emerge when some of those variables cannot be followed and are thus irrelevant for the dynamic description. Their absence renders the dynamic irreversible. A further aim is to demonstrate that almost any subdiscipline of theoretical physics can conceptually be put into the context of generated stochastic processes. Classical mechanics and classical field theory are deterministic processes which emerge when fluctuations in relevant variables are negligible. Quantum mechanics and quantum field theory consider genuine quantum processes. Equilibrium and non-equilibrium statistics apply to the regime where relaxing Markov processes emerge from quantum processes by omission of a large number of uncontrollable variables. Systems with many variables often self-organize in such a way that only a few slow variables can serve as relevant variables. Symmetries and topological classes are essential in identifying such relevant variables. The third aim of this book is to provide conceptually general methods of solutions which can serve as starting points to find relevant variables as to apply best-practice approximation methods. Such methods are available through generating functionals. The potential reader is a graduate student who has heard already a course in quantum theory and equilibrium statistical physics including the mathematics of spectral analysis (eigenvalues, eigenvectors, Fourier and Laplace transformation). The reader should be open for a unifying look on several topics.

Generated Dynamics of Markov and Quantum Processes (Paperback, Softcover reprint of the original 1st ed. 2016): Martin Janssen Generated Dynamics of Markov and Quantum Processes (Paperback, Softcover reprint of the original 1st ed. 2016)
Martin Janssen
R2,170 Discovery Miles 21 700 Ships in 10 - 15 working days

This book presents Markov and quantum processes as two sides of a coin called generated stochastic processes. It deals with quantum processes as reversible stochastic processes generated by one-step unitary operators, while Markov processes are irreversible stochastic processes generated by one-step stochastic operators. The characteristic feature of quantum processes are oscillations, interference, lots of stationary states in bounded systems and possible asymptotic stationary scattering states in open systems, while the characteristic feature of Markov processes are relaxations to a single stationary state. Quantum processes apply to systems where all variables, that control reversibility, are taken as relevant variables, while Markov processes emerge when some of those variables cannot be followed and are thus irrelevant for the dynamic description. Their absence renders the dynamic irreversible. A further aim is to demonstrate that almost any subdiscipline of theoretical physics can conceptually be put into the context of generated stochastic processes. Classical mechanics and classical field theory are deterministic processes which emerge when fluctuations in relevant variables are negligible. Quantum mechanics and quantum field theory consider genuine quantum processes. Equilibrium and non-equilibrium statistics apply to the regime where relaxing Markov processes emerge from quantum processes by omission of a large number of uncontrollable variables. Systems with many variables often self-organize in such a way that only a few slow variables can serve as relevant variables. Symmetries and topological classes are essential in identifying such relevant variables. The third aim of this book is to provide conceptually general methods of solutions which can serve as starting points to find relevant variables as to apply best-practice approximation methods. Such methods are available through generating functionals. The potential reader is a graduate student who has heard already a course in quantum theory and equilibrium statistical physics including the mathematics of spectral analysis (eigenvalues, eigenvectors, Fourier and Laplace transformation). The reader should be open for a unifying look on several topics.

Mathematische Modellierung - Wie funktioniert sie und was kann sie? (German, Paperback, 1. Aufl. 2022): Martin Janssen Mathematische Modellierung - Wie funktioniert sie und was kann sie? (German, Paperback, 1. Aufl. 2022)
Martin Janssen
R544 Discovery Miles 5 440 Ships in 10 - 15 working days

Mathematische Modellierung (MM) dient als Planungswerkzeug fur Entscheidungen, von denen wir alle zunehmend betroffen sind. UEber das Vorgehen und die Aussagekraft von MM ist daher ein grundlegendes Verstandnis auch ohne akademische Vorbildung wunschenswert. MM benoetigt zwei wesentliche Elemente: Das Auffinden relevanter Einflussgroessen und das Auffinden einer kleinschrittigen Regel, die den Ablauf von Szenarien schrittweise erfasst. Im Text werden prototypische Modelle vorgestellt, die weite Anwendungsbereiche haben. Die Grenzen vom MM ergeben sich aus unvermeidbaren Beschrankungen in der Genauigkeit und sie fuhren zu einer Verzweigung von Modellen in vernetzte Modellsysteme.

Musikalische Bildung. Eine Untersuchung uber Theorie und Praxis (German, Paperback): Martin Janssen Musikalische Bildung. Eine Untersuchung uber Theorie und Praxis (German, Paperback)
Martin Janssen
R2,388 Discovery Miles 23 880 Ships in 10 - 15 working days
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