Simulating many-body physics with quantum phase-space methods
Simulating many-body physics with quantum phase-space methods
Simulating many-body physics with quantum phase-space methods
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Gaussian Basis I: Coherent-state projectorŝΛ =∣ α〉〈(α + ) ∗∣ ∣〈(α+ ) ∗∣ ∣ ∣ ∣α 〉✄ defines the +P distribution, <strong>with</strong> a doubled <strong>phase</strong> <strong>space</strong> −→ λ = (Ω,α,α + )✄ 〈 moments: O ( â † ,â )〉 = E [O(α + ,α)]✄ successful for <strong>many</strong> applications in <strong>quantum</strong> optics✄ successful simulations of short-time <strong>quantum</strong> dynamics of BEC<strong>Simulating</strong> <strong>many</strong>-<strong>body</strong> <strong>physics</strong> <strong>with</strong> <strong>quantum</strong> <strong>phase</strong>-<strong>space</strong> <strong>methods</strong> 19