Pith Number

pith:2VYI4APV

pith:2026:2VYI4APVPIFIXPC3IOZFQIEJEE

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Expectation values after an integrable boundary quantum quench

D\'avid F\"ulepi, M\'at\'e Lencs\'es, Zolt\'an Bajnok

Form factors of bulk and boundary-changing operators determine the real-time evolution after an integrable boundary quench.

arxiv:2605.04823 v2 · 2026-05-06 · hep-th · cond-mat.stat-mech

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\usepackage{pith}
\pithnumber{2VYI4APVPIFIXPC3IOZFQIEJEE}

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4 Citations open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

We develop a general framework for analyzing the resulting real-time dynamics based on form factors of bulk and boundary-changing operators. [...] we examine the time evolution of the pre-quench vacuum and compute the vacuum-to-vacuum matrix elements of local operators inserted after the quench.

C2weakest assumption

The boundary conditions are integrable both before and after the quench, and the form-factor expansion remains valid and convergent for the time-dependent matrix elements in the massive theory.

C3one line summary

A form factor framework is introduced to compute expectation values and time evolution after an integrable boundary quantum quench, applied to the Lee-Yang model at conformal and massive points with TCSA validation.

Receipt and verification

First computed	2026-06-19T16:12:54.671733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5708e01f57a0a8bbc5b43b2582089211fe6660075cf0ffb0ad700d0f882fb10

Aliases

arxiv: 2605.04823 · arxiv_version: 2605.04823v2 · doi: 10.48550/arxiv.2605.04823 · pith_short_12: 2VYI4APVPIFI · pith_short_16: 2VYI4APVPIFIXPC3 · pith_short_8: 2VYI4APV

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2VYI4APVPIFIXPC3IOZFQIEJEE \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d5708e01f57a0a8bbc5b43b2582089211fe6660075cf0ffb0ad700d0f882fb10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6d2a563660a7f3077b3117aa0692a8bb29a8ba152ca7aed7b8a9f633fb7c25e",
    "cross_cats_sorted": [
      "cond-mat.stat-mech"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2026-05-06T12:14:11Z",
    "title_canon_sha256": "258ae3c389f0c736e4714f81f7ac965ce3c021edd4bdb70cfaae36bc2882b033"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.04823",
    "kind": "arxiv",
    "version": 2
  }
}