A systematic $1/c$-expansion of form factor sums for dynamical correlations in the Lieb-Liniger model
We introduce a framework for calculating dynamical correlations in the Lieb-Liniger model in arbitrary energy eigenstates and for all space and time, that combines a Lehmann representation with a $1/c$ expansion. The $n^{\rm th}$ term of the expansion is of order $1/c^n$ and takes into account all $...
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| Format: | Article |
| Language: | English |
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SciPost
2020-12-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.9.6.082 |