Density Matrix Theory and ApplicationsWritten 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. |
Contents
| 1 | |
2 General Density Matrix Theory | 35 |
3 Coupled Systems | 61 |
4 Irreducible Components of the Density Matrix | 115 |
5 Radiation from Polarized Atoms Quantum Beats | 164 |
6 Some Applications | 183 |
7 The Role of Orientation and Alignment in Molecular Processes | 209 |
8 Quantum Theory of Relaxation | 274 |
Appendixes | 313 |
| 337 | |
| 341 | |
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Common terms and phrases
ˇ ˇ alignment angle angular momentum applied assumed atoms axes axially axis basis beam calculations characterized coefficients coherence collision combined completely components condition consider correlation corresponding defined definite denotes density matrix dependence derived described detail determined diagonal direction discussion distribution effects electrons elements emitted energy ensemble entanglement Equation evolution example excited experiments expression factors field final follows function given gives Hence important independent initial interaction interest interpretation introduced light linear magnetic matrix elements measurement mixture molecular molecules multipoles normalization noted observed obtain operator orbital orientation parallel parameters particles particular perturbation photons physical plane polarization vector possible probability properties pure quantum mechanical reduced refer relation relaxation relevant representation represented respect rotation scattering Sect shown shows specified spin Substitution symmetry taking tensor theory transformation transition values vanish zero