public class ComplexCouplingsAnalyzer
extends CLIAnalyzer
(For Fig 3b) Computes the lowest eigenvalue of the smeared energy density,
for a model with S-matrix consisting of \(n\) pairs of sinh-Gordon factors
with complex coupling constant, \(B=1\pm k a i\), where \(k=1..n\),
and \(a>0\) is a constant. \(n\) is varied over a certain range.
Takes four command line arguments: the number \(N\) of discretization steps,
the rapidity cutoff \(R\), the maximum number of S-matrix factors pairs (\(n\)
is varied from 1 to this value), and the step size in the coupling, \(a\).