Abstract
In conclusion, in this thesis I have studied the effects of interactions, quantum and thermal fluctuations on a one-dimensional Bose gas. In the introductory Chap. 2, I have recaped a few hallmarks of one-dimensional quantum systems, such as collectivization of motion and excitations, that prevents the existence of well-defined quasi-particles and seals the breakdown of Fermi liquid theory. Fermionization of interacting bosons manifests itself through the appearance of a Fermi sea structure in quasi-momentum space, and in real space, through a fictitious Pauli principle that is not due to statistics but to interactions. For systems with spin, the charge and spin sectors of the Hilbert space decouple, and their excitations split in real space too, challenging the notion of elementary particle.
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Lang, G. (2018). General Conclusion. In: Correlations in Low-Dimensional Quantum Gases. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-030-05285-0_6
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DOI: https://doi.org/10.1007/978-3-030-05285-0_6
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