List of Figures

2.1 First levels of the Coulomb, harmonic, and linear potentials
8.1 Splitting pattern of the N=2 multiplet for two-body perturbations of the harmonic oscillator
8.2 Generalized splitting pattern of the N=2 multiplet for three-body perturbations of the harmonic oscillator or for a nearly hyperscalar potential
8.3 Splitting pattern of the N = 3 multiplet for a harmonic oscillator perturbed by a linear two-body potential. In the first column, the whole N = 3 multiplet is shifted by ¯ ϵ N=3 from its unperturbed value (not shown). The effect of η induces a splitting which is further modified by the term γ, defined in Eq. (8.2.19).
8.4 Splitting pattern of the negative-parity states for a linear potential treated at first order around its hyperscalar approximation. The bottom line (70, 1)corresponds to the hyper-radial excitation of the L = 1 state. The other states belong to the L = 3 multiplet. The figure exhibits the splitting pattern one gets when switching on the corrections V 4 and V 6 to the hyperscalar potential V 0.
11.1 Scale independent ratios R1 = {2[qqq]+2[qqQ]4[QQq]}{[qqq][QQQ]} and R2 = {2[QQQ] + 2[QQq] 4[qqQ]}{[qqq] [QQQ]} for the power-law potentials rijβ with β = 0.1 and β = 1, as a function of the quark mass ratio x = M∕m.
11.2 Binding energy of qqQ, as a function of the inverse mass mQ1 for the power–law potentials r ijβ with β = 0.1 and β = 1.
11.3 Ratio R4 = (ΣΛ)Σ) for the power-law potentials r ijβ with β = 0.1 and β = 1, as a function of the quark mass ratio x = M∕m
11.4 Ratios R5 = (2Σ3Λ)(2Δ2N) and R 6 = (ΞΞ)Σ) for the power-law potentials rijβ with β = 0.1 and β = 1, as a function of the quark mass ratio M∕m
11.5 Ratios R7 = (ΣQΛQ)Λ) and R8 = (ΣQΣ Q)Λ) for the power-law potentials rijβ with β = 0.1 and β = 1, as a function of the quark mass ratio M∕m