Composite Operator Method Analysis of the Underdoped Cuprates Puzzle

Figure 10

(Color online) Spectral density function , real and imaginary parts of the self-energy , noninteracting dispersion as functions of frequency at (a) and (b) for , , and . ((c) and (d)) Imaginary part of the self-energy as a function of temperature at (squares) and (circles) for and . The blue line is just a guide to the eye.

(a)

(b)

(c)

(d)