RADIATIVE DECAY: NONPERTURBATIVE APPROACHES

RADIATIVE DECAY: NONPERTURBATIVE APPROACHES
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辐射衰变:非微扰方法

DOI:
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发表时间:
1995
期刊:
影响因子:
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通讯作者:
H. Spohn
H. Spohn
中科院分区:
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文献类型:
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作者:
M. Hübner;H. Spohn

文献摘要

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在辐射衰变中,耦合系统中的电子在外加辐射场的束缚下,在较长的时间内弛豫到基态。我们的中心问题是在相应的薛定谔方程的基础上证明这种行为。我们认为,自旋玻色子哈密顿量是一个简单但在物理上仍然可以接受的测试案例。我们将辐射衰变与散射理论联系起来,证明了波算符的存在性。对其他方法进行了回顾和比较。列举了一些具有挑战性的公开问题。
In radiative decay the coupled system, electron bound by some external potential plus radiation field, relaxes to the ground state in the long time limit. Our central issue is to prove such a behaviour on the basis of the corresponding Schrodinger equation. We argue that the spin-boson Hamiltonian is a simple, but physically still acceptable test case. We relate radiative decay to scattering theory and prove the existence of wave operators. Other approaches are reviewed and compared. Some challenging open problems are listed.