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Xu, Zhongshan; Du, Yiqiang1,2,3; Erdmenger, Johanna1,2; Meyer, Rene1,2; Tian, Yu4; Xian, Zhuo-Yu
Holographic superfluid solitons with backreaction
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordDARK SOLITONS CROSSOVER DYNAMICS WAVES
AbstractSolitons are important nonperturbative excitations in superfluids. For holographic superfluids, we numerically construct "dark'' solitons that have the symmetry-restored phase at their core. A central point is that we include the gravitational backreaction of the matter fields, which becomes important at low temperatures. We study in detail the properties of these solitons under variation of the backreaction strength via tuning the gravitational constant. In particular, the depletion fraction of the particle number density at the core of the solitons is carefully investigated. In agreement with the probe-limit analysis, the depletion fraction shows the same qualitative behavior as in Bogoliubov-de Gennes theory, even if the backreaction is included. We find that the depletion decreases with increasing backreaction strength. Moreover, the inclusion of backreaction enables us to obtain the effective energy density of solitons within holography, which together with an evaluation of the surface tension leads to a simple physical explanation for the snake instability of dark solitons.
2020
ISSN2470-0010
Volume101Issue:8Pages:86011
Cooperation Status国际
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1103/PhysRevD.101.086011
Indexed BySCIE
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27003
CollectionSCI期刊论文
Affiliation1.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
2.Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany
3.Wurzburg Dresden Cluster Excellence Ctqmat, D-97074 Wurzburg, Germany
4.Hanyang Univ, Dept Phys, 222 Wangshimni Ro, Seoul 04763, South Korea
5.MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
6.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xu, Zhongshan,Du, Yiqiang,Erdmenger, Johanna,et al. Holographic superfluid solitons with backreaction[J]. PHYSICAL REVIEW D,2020,101(8):86011.
APA Xu, Zhongshan,Du, Yiqiang,Erdmenger, Johanna,Meyer, Rene,Tian, Yu,&Xian, Zhuo-Yu.(2020).Holographic superfluid solitons with backreaction.PHYSICAL REVIEW D,101(8),86011.
MLA Xu, Zhongshan,et al."Holographic superfluid solitons with backreaction".PHYSICAL REVIEW D 101.8(2020):86011.
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