{
 "family": "xxz-chain-domain-wall",
 "description": "Clean open XXZ spin-1/2 chain at the Heisenberg point (J = 1, Delta = 1, no fields), started from a domain wall: the left half spin-up, the right half spin-down. Observable: <Z_i>(t) on every site at 41 times in [0, 20]. Total magnetisation is conserved.",
 "hamiltonian": {
  "type": "xxz_chain",
  "J": 1.0,
  "delta": 1.0,
  "field": {
   "dist": "uniform",
   "W": 0.0
  }
 },
 "initial_state": {
  "type": "domain_wall"
 },
 "observable": {
  "pauli": "Z",
  "sites": "all"
 },
 "times": {
  "T": 20.0,
  "num": 41
 },
 "exact": {
  "size": 18
 },
 "scaling": {
  "size": 32
 },
 "budget_seconds": {
  "exact_suite": 240,
  "scaling": 240,
  "accuracy_probe": 60
 },
 "conserved": [
  "total_z"
 ],
 "score": {
  "metric": "mean_instance_max_abs_error",
  "round_for_display_only": true
 },
 "suite": {
  "version": "public-v2",
  "seeds": [
   20261013
  ],
  "source_independent": true
 },
 "accuracy_probe": {
  "size": 20,
  "seed": 20261113
 }
}