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Updated: Jan 22, 2026

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古典的確率過程から量子確率過程への対称操作と臨界挙動
Gustavo Montes1, Soham Biswas1, Thomas Gorin1
1Universidad de Guadalajara, Departamento de Física, Guadalajara, Jalísco, C.P.-44430, Mexico.
Physical review. E
|January 21, 2026
まとめ
本研究は古典的マルコフ連鎖の量子拡張を探求し、多様な緩和ダイナミクスとコヒーレンス挙動を明らかにする。発見されたコヒーレンス尺度の時間的スケーリング特性はユニークである。
科学分野:
- 量子物理学
- 統計力学
- 複雑系
背景:
- 古典的確率過程は量子アナログを用いてモデル化できる。
- 量子過程はしばしば同時にコヒーレンス生成と破壊を示す。
- マルコフ連鎖はメモリレス遷移を持つ系のモデリングにおいて基本的である。
研究 の 目的:
- 対称操作を用いて古典的マルコフ連鎖の量子拡張を生成する。
- これらの量子拡張の異なる緩和ダイナミクスを調査する。
- コヒーレンスと緩和速度の関係を分析する。
主な方法:
- 重ね合わせを介して古典的確率過程の量子アナログを構築する。
- 対称操作を用いて多様な量子マルコフ連鎖拡張を作成する。
- コヒーレンス、平衡確率、ドメイン壁減衰、純粋性を監視する。
主要な成果:
- 量子拡張は著しく異なる緩和過程を示す。
- コヒーレンス、平衡確率、ドメイン壁減衰、純粋性は拡張によって変化する。
- L1ノルムコヒーレンスと緩和速度の関係が見出された。
- コヒーレンスには有限サイズスケーリングが存在し、短い時間と長い時間で異なる臨界指数を持つ。
結論:
- マルコフ連鎖の量子拡張は豊かで多様な動的挙動を提供する。
- コヒーレンスはこれらの量子系の緩和ダイナミクスにおいて重要な役割を果たす。
- 本研究は量子情報処理と物性物理学への洞察を提供する。
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