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• W2019978547 abstract "We extend the recently developed causal superfermion approach to the real-time transport theory to time-dependent decay problems.Its usefulness is illustrated for the Anderson model of a quantum dot with tunneling rates depending on spin due to the ferromagnetic electrodes and/or spin polarization of the tunnel junction. We set up a second quantization scheme for density operators in the Liouville-Fock space constructing causal field superoperators using the fundamental physical principles of causality/probability conservation and the fermion-parity superselection (univalence). The time-dependent perturbation series for the time-evolution is renormalized by explicitly performing the wide-band limit on the superoperator level. The short and long-time reservoir correlations are shown to be tightly linked to the occurrence of causal field destruction and creation superoperators, respectively. The effective theory takes as a reference a damped local system, providing an interesting starting point for numerical calculations of memory kernels in real-time. A remarkable feature of this approach is the natural appearance of a measurable fermion-parity protected decay mode. It already can be calculated exactly in the Markovian, infinite temperature limit by leading order perturbation theory, yet persists unaltered for the finite temperature, interaction and tunneling spin polarization. Furthermore, we show how a Liouville-space analog of the Pauli principle directly leads to the exact result in the noninteracting limit: surprisingly, it is obtained in finite (second) order renormalized perturbation theory, both for the self-energy as well as the time-evolution propagator. For this limit we calculate the time-evolution of the full density operator starting from an arbitrary initial state on the quantum dot, including spin and pairing coherences and two-particle correlations." @default.
• W2019978547 created "2016-06-24" @default.
• W2019978547 creator A5028925628 @default.
• W2019978547 creator A5034474860 @default.
• W2019978547 date "2014-07-14" @default.
• W2019978547 modified "2023-09-30" @default.
• W2019978547 title "Time-dependent quantum transport: Causal superfermions, exact fermion-parity protected decay modes, and Pauli exclusion principle for mixed quantum states" @default.
• W2019978547 cites W1480932028 @default.
• W2019978547 cites W1511429392 @default.
• W2019978547 cites W1518564315 @default.
• W2019978547 cites W1597531255 @default.
• W2019978547 cites W1867281886 @default.
• W2019978547 cites W1879957557 @default.
• W2019978547 cites W1966039918 @default.
• W2019978547 cites W1969529452 @default.
• W2019978547 cites W1969547155 @default.
• W2019978547 cites W1970351501 @default.
• W2019978547 cites W1971126185 @default.
• W2019978547 cites W1972299476 @default.
• W2019978547 cites W1973787174 @default.
• W2019978547 cites W1974510142 @default.
• W2019978547 cites W1979180077 @default.
• W2019978547 cites W1980838577 @default.
• W2019978547 cites W1983016196 @default.
• W2019978547 cites W1988333998 @default.
• W2019978547 cites W1992656825 @default.
• W2019978547 cites W1994397640 @default.
• W2019978547 cites W1995191547 @default.
• W2019978547 cites W1995967122 @default.
• W2019978547 cites W1997604660 @default.
• W2019978547 cites W1999592269 @default.
• W2019978547 cites W2000189880 @default.
• W2019978547 cites W2000555114 @default.
• W2019978547 cites W2003372226 @default.
• W2019978547 cites W2004113116 @default.
• W2019978547 cites W2004178309 @default.
• W2019978547 cites W2007722473 @default.
• W2019978547 cites W2009543193 @default.
• W2019978547 cites W2017035007 @default.
• W2019978547 cites W2017091712 @default.
• W2019978547 cites W2017334187 @default.
• W2019978547 cites W2020764480 @default.
• W2019978547 cites W2022897182 @default.
• W2019978547 cites W2023440999 @default.
• W2019978547 cites W2027867619 @default.
• W2019978547 cites W2030518444 @default.
• W2019978547 cites W2033754002 @default.
• W2019978547 cites W2033823650 @default.
• W2019978547 cites W2036124572 @default.
• W2019978547 cites W2036145037 @default.
• W2019978547 cites W2037148379 @default.
• W2019978547 cites W2037529485 @default.
• W2019978547 cites W2037827594 @default.
• W2019978547 cites W2042307356 @default.
• W2019978547 cites W2046913864 @default.
• W2019978547 cites W2051566497 @default.
• W2019978547 cites W2051809846 @default.
• W2019978547 cites W2058895267 @default.
• W2019978547 cites W2060410101 @default.
• W2019978547 cites W2060901068 @default.
• W2019978547 cites W2062084505 @default.
• W2019978547 cites W2065175659 @default.
• W2019978547 cites W2065504579 @default.
• W2019978547 cites W2066274441 @default.
• W2019978547 cites W2066290325 @default.
• W2019978547 cites W2066482319 @default.
• W2019978547 cites W2069827915 @default.
• W2019978547 cites W2070136364 @default.
• W2019978547 cites W2072004094 @default.
• W2019978547 cites W2072858933 @default.
• W2019978547 cites W2073135831 @default.
• W2019978547 cites W2073801793 @default.
• W2019978547 cites W2076068770 @default.
• W2019978547 cites W2077518292 @default.
• W2019978547 cites W2080499610 @default.
• W2019978547 cites W2081962889 @default.
• W2019978547 cites W2083292401 @default.
• W2019978547 cites W2086046045 @default.
• W2019978547 cites W2087002433 @default.
• W2019978547 cites W2087276830 @default.
• W2019978547 cites W2088356940 @default.
• W2019978547 cites W2088435151 @default.
• W2019978547 cites W2089580208 @default.
• W2019978547 cites W2089896158 @default.
• W2019978547 cites W2090032613 @default.
• W2019978547 cites W2093203498 @default.
• W2019978547 cites W2094172353 @default.
• W2019978547 cites W2102986313 @default.
• W2019978547 cites W2104275208 @default.
• W2019978547 cites W2122404627 @default.
• W2019978547 cites W2127686923 @default.
• W2019978547 cites W2137482880 @default.
• W2019978547 cites W2140088238 @default.
• W2019978547 cites W2143723312 @default.
• W2019978547 cites W2147195941 @default.
• W2019978547 cites W2160043413 @default.
• W2019978547 cites W2162920910 @default.
• W2019978547 cites W2165621485 @default.
• W2019978547 cites W2165922946 @default.
• W2019978547 cites W2170098818 @default.

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