期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.170402
关键词
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资金
- National Science Council of Republic of China [NSC-99-2112-006-008-MY3]
- ARO
- JSPS-RFBR [12-02-92100]
- MEXT Kakenhi on Quantum Cybernetics
- JSPS via its FIRST program
- Grants-in-Aid for Scientific Research [21102002, 22224007] Funding Source: KAKEN
We present a general theory of non-Markovian dynamics for open systems of noninteracting fermions (bosons) linearly coupled to thermal environments of noninteracting fermions (bosons). We explore the non-Markovian dynamics by connecting the exact master equations with the nonequilibirum Green's functions. Environmental backactions are fully taken into account. The non-Markovian dynamics consists of nonexponential decays and dissipationless oscillations. Nonexponential decays are induced by the discontinuity in the imaginary part of the self-energy corrections. Dissipationless oscillations arise from band gaps or the finite band structure of spectral densities. The exact analytic solutions for various non-Markovian thermal environments show that non-Markovian dynamics can be largely understood from the environmental-modified spectra of open systems.
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