Decoherence and dynamical entropy generation in quantum field theory
Decoherence and dynamical entropy generation in quantum field theory
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量子场论中的退相干和动态熵产生
DOI:
10.1016/j.physletb.2011.12.049
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发表时间:
2012
影响因子:
4.4
通讯作者:
Michael G. Schmidt
中科院分区:
文献类型:
--
作者:
Jurjen F. Koksma;Tomislav Prokopec;Michael G. Schmidt
We formulate a novel approach to decoherence based on neglecting observationally inaccessible correlators. We apply our formalism to a renormalised interacting quantum field theoretical model. Using out-of-equilibrium field theory techniques we show that the Gaussian von Neumann entropy for a pure quantum state increases to the interacting thermal entropy. This quantifies decoherence and thus measures how classical our pure state has become. The decoherence rate is equal to the single particle decay rate in our model. We also compare our approach to existing approaches to decoherence in a simple quantum mechanical model. We show that the entropy following from the perturbative master equation suffers from physically unacceptable secular growth.
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DOI:
10.1103/physrevd.83.085011
发表时间:
2010
期刊:
Journal of Physics A
影响因子:
--
作者:
J. Koksma;T. Prokopec;M. G. Schmidt
通讯作者:
M. G. Schmidt
DOI:
--
发表时间:
1993
期刊:
Physical Review D, Particles and fields
影响因子:
--
作者:
B. Hu;A. Matacz
通讯作者:
A. Matacz
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
S. Borsányi;Urko Reinosa University of Sussex;Kitp Santa Barbara;Ecole Polytechnique Cnrs
通讯作者:
Ecole Polytechnique Cnrs
DOI:
10.1103/physrevd.47.1576
发表时间:
1993-02
期刊:
Physical review. D, Particles and fields
影响因子:
--
作者:
B. Hu;Juan Pablo Paz;Yuhong Zhang
通讯作者:
B. Hu;Juan Pablo Paz;Yuhong Zhang
影响因子:
3.5
作者:
C. Kiefer;I. Lohmar;D. Polarski;A. Starobinsky
通讯作者:
C. Kiefer;I. Lohmar;D. Polarski;A. Starobinsky