Struct PhysicsCollector 

pub struct PhysicsCollector { /* private fields */ }

Geometry and Fourier phases shared by every measurement of a run.

Implementations

impl PhysicsCollector

pub fn new( lattice: &Lattice, n_temps: usize, options: &PhysicsOptions, components: usize, ) -> Result<Self, String>

pub fn with_overlap(self, lattice: &Lattice) -> Self

Adds replica-overlap moments overlap2, overlap4 and overlap_structure_factor_min, filled by Self::measure_overlap, and overlap2_all_pairs, filled by Self::measure_overlap_all_pairs. Call before the first measurement.

pub fn measure_overlap( &mut self, lattice: &Lattice, a: &[i8], b: &[i8], occupied: &[bool], temperature: usize, weight: f64, )

Accumulates the overlap q_i = a_i b_i of one replica pair at temperature.

Self::end_sweep counts replicas, not pairs, so weight should be replicas per measured pair to normalize these moments per pair.

pub fn measure_overlap_all_pairs( &mut self, replicas: &[&[i8]], temperature: usize, weight: f64, )

Accumulates Q2, q² averaged over every pair of replicas, at temperature. Unlike the fixed pairs of Self::measure_overlap, Q2 does not change when replicas are relabeled. weight is the replica count that Self::end_sweep adds per sweep.

pub fn measure<S: Spin>( &mut self, lattice: &Lattice, spins: &[S], couplings: &[S::Value], occupied: &[bool], temperature: usize, ) -> [f64; 2]

Returns (physical energy/site, magnetization squared/site²) for diagnostics.

pub fn measure_cached<S: Spin>( &mut self, lattice: &Lattice, spins: &[S], couplings: &[S::Value], occupied: &[bool], temperature: usize, cached: CachedTotals, ) -> [f64; 2]

Like Self::measure, but takes energy and magnetization from cached instead of repeating the bond pass. One-component collectors only; XY helicity moments need the bond pass, so two-component collectors ignore it.

pub fn end_sweep(&mut self, n_replicas: usize)

pub fn finish(self) -> PhysicsResult

Moments are NaN when no sweep was measured.