Impurities in a one-dimensional Bose gas: the flow equation approach
A few years ago, flow equations were introduced as a technique for calculating the ground-state energies of cold Bose gases with and without impurities. In this paper, we extend this approach to compute observables other than the energy. As an example, we calculate the densities, and phase fluctuati...
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| Format: | Article |
| Language: | English |
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SciPost
2021-07-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.11.1.008 |