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Non-equilibrium dynamics of an ultracold Bose gas under multi-pulsed interaction quenches
Chen, L; Zhang, ZD; Liang, ZX; Liang, ZX (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China.
2016-11-10
Source PublicationMODERN PHYSICS LETTERS B
ISSN0217-9849
Volume30Issue:30
AbstractWe investigate the non-equilibrium properties of a weakly interacting Bose gas subjected to a multi-pulsed quench at zero temperature, where the interaction parameter in the Hamiltonian system switches between values g(i) and g(f) for multiple times. The one body and two-body correlation functions as well as Tan's contact are calculated. The quench induced excitations are shown to increase with the number of quenches for both g(i)/g(f) > 1 and g(i)/g(f) < 1. This implies the possibility to use multi-pulsed quantum quench as a more powerful way as compared to the "one-off" quench in controllable explorations of non-equilibrium quantum many-body systems. In addition, we study the ultra-short-range property of the two-body correlation function after multiple interaction quenches, which can serve as a probe of the "Tan's contact" in the experiments. Our findings allow for an experimental probe using state of the art techniques with ultracold quantum gases.
description.department[chen, lei ; zhang, zhidong ; liang, zhaoxin] chinese acad sci, inst met res, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china ; [chen, lei] zunyi normal coll, dept phys, shanghai rd 830, zunyi 563002, peoples r china
KeywordMulti-pulsed Quench Correlation Function Tan's Contact
Subject AreaPhysics, Applied ; Physics, Condensed Matter ; Physics, Mathematical
Funding OrganizationNational Natural Science Foundation of China [11004200, 11274315, 11464052]; Science and Technology Foundation of Guizhou Province [J[2012]2345]; Key Disciplines of Guizhou Province [QXWB[2013]18]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76187
Collection中国科学院金属研究所
Corresponding AuthorLiang, ZX (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Chen, L,Zhang, ZD,Liang, ZX,et al. Non-equilibrium dynamics of an ultracold Bose gas under multi-pulsed interaction quenches[J]. MODERN PHYSICS LETTERS B,2016,30(30).
APA Chen, L,Zhang, ZD,Liang, ZX,&Liang, ZX .(2016).Non-equilibrium dynamics of an ultracold Bose gas under multi-pulsed interaction quenches.MODERN PHYSICS LETTERS B,30(30).
MLA Chen, L,et al."Non-equilibrium dynamics of an ultracold Bose gas under multi-pulsed interaction quenches".MODERN PHYSICS LETTERS B 30.30(2016).
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