ExtensiveMoments

class ExtensiveMoments : public feasst::Analyze 

Accumulate extensive moments for derivatives from fluctuations. This is currently implemented for a grand canonical ensemble:

\(N_i^j N_k^m U^p\)

where \(i,k\) are particle types, and the powers \(j,m,p\) are collected from 0 to a maximum order cutoff.

Public Functions

std::string header(const Criteria &criteria, const System &system, const TrialFactory &trials) const: Return the header for writing.

void initialize(Criteria *criteria, System *system, TrialFactory *trial_factory): Initialize and precompute before trials.

void update(const Criteria &criteria, const System &system, const TrialFactory &trial_factory): Perform update action.

std::string write(const Criteria &criteria, const System &system, const TrialFactory &trial_factory): Write the moments by serialization of a 5d accumulator. If checkpoints do not work, this file can be read using feasst_deserialize

const Accumulator &moments(const int p, const int m, const int k, const int j, const int i) const: Return the extensive moments.

Arguments