LoschmidtEcho — quantity index
Generated by docs/atlas/generate.jl — a pure VIEW over the *_registry.jl claims + the static test/INVENTORY.jsonl AST scan. No test is executed and no src is run; test/INVENTORY.jsonl is regenerated in-place (idempotently) from that static scan; fetch/@register untouched. Assurance labels are PROVISIONAL: residuals / confidence are not shown yet (RES not wired). Badges reflect the committed test AST, not the latest CI run — a hub can read green while its @test is red between regenerations. @sweep = a graceful regime-resolution gap, not card omission.
All (Model, BC) hubs src claims for the LoschmidtEcho observable. Empty cells = this model doesn't yet have a LoschmidtEcho registered at that BC — i.e. where this quantity could be added to other models.
Definition
Loschmidt-echo family for sudden-quench dynamics. After preparing |ψ_0⟩ as the ground state of an "initial" model H_0 and quenching to the "final" model H_f (passed as the first positional argument to fetch), the Loschmidt amplitude is
(extracted from src/core/quantities.jl docstring.)
Coverage
- Models with this quantity registered: 2
- Total hubs (Model, BC pairs): 3
- Methods (derived from
@register):analytic,bdg,free_fermion_analytic - Universality classes (where applicable):
Ising
Top references (by hub count):
- Heyl2013 — 3 hubs
- Heyl2018 — 2 hubs
- CalabreseEsslerFagotti2012 — 1 hub
- EsslerFagotti2016 — 1 hub
Model × BC matrix
| Model | OBC | Infinite |
|---|---|---|
TFIM | 🟢 hub | 🟢 hub |
XXZ1D | — | 🟢 hub |