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Density Matrix Theory and Applications

The Second Edition of this highly regarded text continues to provide a systematic treatment of density matrix techniques. The text discusses basic principles and recent studies in atomic and molecular reactions. A new chapter explores the role of orientation and alignment in molecular physics.

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  • "Quantum mechanics has been mostly concerned with those states of systems that are represented by state vectors. In many cases, however, the system of interest is incompletely determined; for example, it may have no more than a certain probability of being in the precisely defined dynamical state characterized by a state vector. Because of this incomplete knowledge, a need for statistical averaging arises in the same sense as in classical physics. The density matrix was introduced by J. von Neumann in 1927 to describe statistical concepts in quantum mechanics. The main virtue of the density matrix is its analytical power in the construction of general formulas and in the proof of general theorems. The evaluation of averages and probabilities of the physical quantities characterizing a given system is extremely cumbersome without the use of density matrix techniques. The representation of quantum mechanical states by density matrices enables the maximum information available on the system to be expressed in a compact manner and hence avoids the introduction of unnecessary vari ables. The use of density matrix methods also has the advantage of providing a uniform treatment of all quantum mechanical states, whether they are completely or incom~'\etely known. Until recently the use of the density matrix method has been mainly restricted to statistical physics. In recent years, however, the application of the density matrix has been gaining more and more importance in many other fields of physics."
  • "Written in a clear pedagogic style, this book deals with the application of density matrix theory to atomic and molecular physics. The aim is to precisely characterize sates by a vector and to construct general formulas and proofs of general theorems. The basic concepts and quantum mechanical fundamentals (reduced density matrices, entanglement, quantum correlations) are discussed in a comprehensive way. The discussion leads up to applications like coherence and orientation effects in atoms and molecules, decoherence and relaxation processes. This third edition has been updated and extended throughout and contains a completely new chapter exploring nonseparability and entanglement in two-particle spin-1/2 systems. The text discusses recent studies in atomic and molecular reactions. A new chapter explores nonseparability and entanglement in two-particle spin-1/2 systems."
  • "The Second Edition of this highly regarded text continues to provide a systematic treatment of density matrix techniques. The text discusses basic principles and recent studies in atomic and molecular reactions. A new chapter explores the role of orientation and alignment in molecular physics."@en
  • "The Second Edition of this highly regarded text continues to provide a systematic treatment of density matrix techniques. The text discusses basic principles and recent studies in atomic and molecular reactions. A new chapter explores the role of orientation and alignment in molecular physics."

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  • "Electronic books"
  • "Electronic books"@en

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  • "Teorii︠a︡ matrit︠s︡y plotnosti i ee prilozhenii︠a︡"
  • "Density matrix : theory and applications"
  • "Density Matrix Theory and Applications"
  • "Density Matrix Theory and Applications"@en
  • "Density matrix theory and applications"
  • "Density matrix theory and applications"@en
  • "Teoriâ matricy plotnosti i ee priloženiâ"

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