期刊
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
卷 -, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1742-5468/2012/07/P07016
关键词
correlation functions; form factors; integrable quantum field theory; exact results
资金
- EPSRC [EP/I032487/1]
- ERC [279391 EDEQS]
- ESF network INSTANS
- INFN
- Engineering and Physical Sciences Research Council [EP/I032487/1] Funding Source: researchfish
- EPSRC [EP/I032487/1] Funding Source: UKRI
We consider the time evolution of order parameter correlation functions after a sudden quantum quench of the magnetic field in the transverse field Ising chain. Using two novel methods based on determinants and form factor sums respectively, we derive analytic expressions for the asymptotic behaviour of one- and two-point correlators. We discuss quenches within the ordered and disordered phases as well as quenches between the phases and to the quantum critical point. We give detailed accounts of both methods.
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