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Article Contents

ABSTRACT

1.1.ORBITS

1.1.1.Quasiperiodicity and isolating integrals

1.1.2Angles and actions

1.1.3.Epicycle approximation

1.2.RESONANCES

1.2.1.Perturbation theory

1.2.2.Frequency analysis

1.2.3.Adiabatic deformation

1.2.4.From order to chaos

1.3.FLUCTUATIONS

1.3.1.Two-body scattering

1.3.2.Orbit-averaged Fokker-Planck equation

1.3.3.Heating of the solar neighbourhood

1.4.SPIRAL STRUCTURE

1.4.1.Secular evolution driven by spiral structure

1.4.2.Propagation of spiral waves

1.4.3.Spiral structure and normal modes

1.4.4.Driving spiral structure

5.CONCLUSION

REFERENCES