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Crossover physics in the non-equilibrium dynamics of quenched quantum impurity systems
- Source :
- Phys. Rev. Lett. 110, 240601 (2013)
- Publication Year :
- 2013
-
Abstract
- A general framework is proposed to tackle analytically local quantum quenches in integrable impurity systems, combining a mapping onto a boundary problem with the form factor approach to boundary-condition-changing operators introduced in Phys. Rev. Lett. 80, 4370 (1998). We discuss how to compute exactly two central quantities of interest: the Loschmidt echo and the distribution of the work done during the quantum quench. Our results display an interesting crossover physics characterized by the energy scale T_b of the impurity corresponding to the Kondo temperature. We discuss in detail the non-interacting case as a paradigm and benchmark for more complicated integrable impurity models, and check our results using numerical methods.<br />Comment: 4.5 pages + supplementary material. Published version
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 110, 240601 (2013)
- Publication Type :
- Report
- Accession number :
- edsarx.1303.6655
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.110.240601