| Preface | p. v |
| Some General Aspects of Quantum Tunneling and Coherence Application to the BEC Atomic Gases | p. 1 |
| Tunnelling in Two Dimensions | p. 35 |
| Introduction | p. 35 |
| Dynamics and the Zoology of Wavefunctions | p. 39 |
| Integrable and near-integrable dynamics | p. 40 |
| Mixed dynamics | p. 44 |
| Chaotic dynamics | p. 45 |
| Tunnelling in Integrable and Near-integrable Systems | p. 48 |
| Exactly integrable case | p. 49 |
| Analytic continuation of KAM tori | p. 53 |
| Wilkinson's formula | p. 58 |
| Chaos-assisted Tunnelling | p. 63 |
| Overview and statistics | p. 63 |
| Scattering matrix approach | p. 69 |
| Chaos and Complex Trajectories | p. 75 |
| A dynamical perspective | p. 76 |
| Complete chaos in the energy domain | p. 84 |
| Conclusion | p. 95 |
| References | p. 96 |
| Quantum Environments: Spin Baths, Oscillator Baths, and Applications to Quantum Magnetism | p. 101 |
| Introduction | p. 101 |
| Effective Hamiltonians: Spin Baths and Oscillator Baths | p. 103 |
| Truncation to low energies | p. 104 |
| Spin baths and nanomagnets - a worked example | p. 107 |
| Some other systems coupled to spin baths | p. 118 |
| Coupling to the oscillator bath | p. 127 |
| Tunneling Dynamics: Resonance, Relaxation, Decoherence | p. 142 |
| Generalities | p. 142 |
| Dynamics of the spin-boson problem | p. 146 |
| Other bosonic models | p. 152 |
| Central spin model | p. 158 |
| Quantum Nanomagnetism | p. 171 |
| Resonant tunneling relaxation | p. 173 |
| Macroscopic quantum coherence | p. 189 |
| References | p. 194 |
| Coherent Magnetic Moment Reversal in Small Particles with Nuclear Spins | p. 199 |
| Motivation for This Work | p. 199 |
| Introduction to Physical Problems and Models | p. 201 |
| Physical system | p. 201 |
| What to calculate; preliminary arguments | p. 204 |
| The Discrete WKB Method | p. 207 |
| Tunnel Splitting for the Hamiltonian (1) | p. 210 |
| Inclusion of Nuclear Spins | p. 212 |
| One-coflip splittings | p. 212 |
| Two co-flip splittings | p. 217 |
| Higher coflip processes; effective Hamiltonian | p. 220 |
| Conclusions | p. 223 |
| References | p. 226 |
| Tunneling from Super- to Normal-deformed Minima in Nuclei | p. 229 |
| Introduction | p. 229 |
| Superdeformation in Nuclei | p. 230 |
| General properties | p. 230 |
| Tunneling from SD states | p. 233 |
| Experiments | p. 234 |
| Feeding of SD banks | p. 236 |
| Cold cascades within SD rotational bands | p. 239 |
| Decay from SD Bands: Tunneling Out of the False Vacuum | p. 240 |
| Physics from decay out of SD bands | p. 240 |
| Decay mechanisms | p. 240 |
| Spectra from decay out SD states | p. 242 |
| Spin/parity quantum numbers, energies and decay scheme of SD bands | p. 248 |
| Identical bands | p. 254 |
| Quenching of pairing with excitation energy | p. 255 |
| Onset of chaos with excitation energy | p. 259 |
| Some Other Examples of Tunneling in Nuclear Physics | p. 262 |
| [Delta]I = 4 bifurcation in SD bands | p. 262 |
| Sub-barrier fusion | p. 263 |
| Proton emitters | p. 264 |
| Comments on Tunneling in Nuclei | p. 267 |
| Analogies with other systems | p. 268 |
| Summary | p. 268 |
| References | p. 270 |
| Solitons in the Bose Condensate | p. 277 |
| Introduction | p. 277 |
| Preliminaries: Mean Fields, the Condensate Wave Function, and the Pseudopotential | p. 279 |
| Separation of Variables in a Box, Jacobi Solutions for the 1-dimensional NLSE | p. 285 |
| Stationary State Solutions of the NLSE and Condensate Collisions | p. 293 |
| An Elementary Introduction to Solitons | p. 302 |
| References | p. 323 |
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