INFLUENCE OF DISSIPATION ON QUANTUM TUNNELING IN MACROSCOPIC SYSTEMS
INFLUENCE OF DISSIPATION ON QUANTUM TUNNELING IN MACROSCOPIC SYSTEMS
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DOI：
10.1103/physrevlett.46.211
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发表时间：
1981-01-01
影响因子：
8.6
通讯作者：
LEGGETT, AJ
中科院分区：
文献类型：
--
作者：
CALDEIRA, AO;LEGGETT, AJ
考虑了一个量子系统，它在T=0时可以隧穿出亚稳态，并且它与环境的相互作用在经典可达区域用唯象摩擦系数η来充分描述。只假定环境响应是线性的，发现耗散将隧道几率乘以因子EXP[−Aη(ΔQ)2ℏ]，其中ΔQ是“势垒下的距离”，A是一个数值因子，通常是序数单位。
A quantum system which can tunnel, at T= 0, out of a metastable state and whose interaction with its environment is adequately described in the classically accessible region by a phenomenological friction coefficient η, is considered. By only assuming that the environment response is linear, it is found that dissipation multiplies the tunneling probability by the factor exp [− A η (Δ q) 2 ℏ], where Δ q is the" distance under the barrier" and A is a numerical factor which is generally of order unity.