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Showing 2004 · quant-phShow all
3 papers · 2 filters
quant-ph2004★ 27 cited
Uniform Semiclassical Approach to Fidelity Decay: from Weak to Strong Perturbation
Wen-ge Wang, Baowen Li
We study fidelity decay by a uniform semiclassical approach, in the three perturbation regimes, namely, the perturbative regime, the Fermi-golden-rule (FGR) regime, and the Lyapuno…
quant-ph2004★ 32 cited
Uniform semiclassical approach to fidelity decay in the deep Lyapunov regime
Wen-ge Wang, G. Casati, Baowen Li +1
We use the uniform semiclassical approximation in order to derive the fidelity decay in the regime of large perturbations. Numerical computations are presented which agree with our…
quant-ph2004
Statistical properties of radiation fields in a compact space
Zhe Chang, Cheng-Bo Guan
We discuss radiation fields in a compact space of finite size instead of that in a cavity for investigating the coupled atom-radiation field system. Representations of $T(1)\times…