<div class="csl-bib-body">
<div class="csl-entry">Huber, D. (2021). <i>Dynamical mean-field theory for hard-core bosons</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2021.88340</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2021.88340
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/17350
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dc.description.abstract
We formulate dynamical mean-field theory for hard-core bosons by extending bosonic DMFT with broken canonical commutation relations to use for LaCoO3, amongst others. Pointwise convergence of results with finite on-site repulsion toresults with explicit hard-core constraints is found by simulations of different models. Further we find, that a formulation analogous to Dyson-Mori form for fermions is not generally applicable for hard-core bosons due to a divergence at half filled lattice. Last we show a phase transition visible in the occupation of sublattices which can be driven by a change of coupling constants.
