156
4 Two-Particle Systems in the Berggren Basis
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
0
5
10
15
20
25
u(r)
r (fm)
u
pn
(r)
u
nn
(r)
Re[u pp (r)]
Im[u pp (r)]
Fig. 4.1 Wave functions of the 1 S 0 antibound state of dineutron u nn (r) (dashed line), virtual state
of diproton u pp (r) (solid lines), and antibound state of deuteron u pn (r) (dotted line). Dineutron and
deuteron wave functions are purely imaginary as they are antibound. The real and imaginary parts
of the diproton wave function are explicitly stated
0
0.1
0.2
0.3
0.4
0.5
0.6
0
5
10
15
20
25
u(r)
r(fm)
3 S
1
3 D
1
Fig. 4.2 3 S 1 (solid line) and 3 D 1 (dashed line) channel wave functions of the weakly bound 1 +
deuteron ground state