核心概念
高度激發的里德堡原子鏈中,緩慢的熱化現象源於系統經典極限中存在著異常穩定的週期軌道,這些軌道抑制了量子混沌的出現。
統計資料
論文指出 Z2 軌道的角頻率約為 1.22J(2S)^2,與實驗值 1.33J 相差不到 10%。
研究發現,對於 Z2 軌道,半經典漲落的增長率與 √S 成反比。
引述
"The surprisingly long-lasting oscillations observed in the dynamics of highly excited states of chains of Rydberg atoms defy the expectation that interacting systems should thermalize fast."
"Here we generalize the Rydberg (pseudospin S = 1/2) system to a chain of arbitrary spin S. Its classical limit features unexpectedly stable periodic orbits that are essential to understand the emergence of robust, parametrically suppressed quantum chaoticity, with semi-classical coherence times diverging as √S."