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- W4297182569 abstract "We give a microscopic derivation of time-dependent correlation functions of the $1D$ cubic nonlinear Schr{o}dinger equation (NLS) from many-body quantum theory. The starting point of our proof is our previous work on the time-independent problem and work of the second author on the corresponding problem on a finite lattice. An important new obstacle in our analysis is the need to work with a cutoff in the number of particles, which breaks the Gaussian structure of the free quantum field and prevents the use of the Wick theorem. We overcome it by the means of complex analytic methods. Our methods apply to the nonlocal NLS with bounded convolution potential. In the periodic setting, we also consider the local NLS, arising from short-range interactions in the many-body setting. To that end, we need the dispersion of the NLS in the form of periodic Strichartz estimates in $X^{s,b}$ spaces." @default.
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- W4297182569 date "2017-03-13" @default.
- W4297182569 modified "2023-09-23" @default.
- W4297182569 title "A microscopic derivation of time-dependent correlation functions of the $1D$ cubic nonlinear Schr{o}dinger equation" @default.
- W4297182569 doi "https://doi.org/10.48550/arxiv.1703.04465" @default.
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