Mobile impurities in integrable models
| Autor: | Dimitri M. Gangardt, Andrew S. Campbell |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Computer Science::Machine Learning
Integrable system FOS: Physical sciences General Physics and Astronomy Computer Science::Digital Libraries 01 natural sciences 010305 fluids & plasmas Bethe ansatz Superfluidity Statistics::Machine Learning Viscosity Impurity Quantum mechanics Phase (matter) 0103 physical sciences 010306 general physics Mathematical Physics Physics Condensed Matter::Quantum Gases Scattering Order (ring theory) Mathematical Physics (math-ph) lcsh:QC1-999 Quantum Gases (cond-mat.quant-gas) Computer Science::Mathematical Software Condensed Matter::Strongly Correlated Electrons Condensed Matter - Quantum Gases lcsh:Physics |
| Zdroj: | SciPost Physics, Vol 3, Iss 2, p 015 (2017) |
| ISSN: | 2542-4653 |
| Popis: | We use a mobile impurity or depleton model to study elementary excitations in one-dimensional integrable systems. For Lieb-Liniger and bosonic Yang-Gaudin models we express two phenomenological parameters characterising renormalised inter- actions of mobile impurities with superfluid background: the number of depleted particles, $N$ and the superfluid phase drop $\pi J$ in terms of the corresponding Bethe Ansatz solution and demonstrate, in the leading order, the absence of two-phonon scattering resulting in vanishing rates of inelastic processes such as viscosity experienced by the mobile impurities Comment: 25 pages, minor corrections made to the manuscript |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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