Bose–Einstein condensation in binary mixture of Bose gases

Phat, Tran Huu; Hoa, Le Viet; Anh, Nguyễn Tuấn; Long, Nguyen Van

doi:10.1016/j.aop.2009.07.003

Cited by 24 publications

(20 citation statements)

References 53 publications

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“…[33][34][35][36][37][38][39][40] and the phase diagram at finite tem perature was investigated in Refs. [41][42][43][44], O ur focus in this paper is on the calculation o f static interfa cial properties o f BEC binary m ixtures w ithin G ross-Pitaevskii (GP) theory [45]. Research on this problem , in particular on the interfacial tension o f phase-separated m ixtures o f BECs [24], has led to interesting results [23,46], In particular, in [46] accurate analytical approxim ations (e.g., series expansions) w ere provided, covering certain ranges o f condensate healing lengths and interparticle repulsive interaction strengths.…”

Section: Introductionmentioning

confidence: 99%

Static interfacial properties of Bose-Einstein-condensate mixtures

et al. 2015

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The interfacial profiles and interfacial tensions of phase-separated binary mixtures of Bose-Einstein condensates are studied theoretically. The two condensates are characterized by their respective healing lengths and £2 and by the interspecies repulsive interaction K. An exact solution to the Gross-Pitaevskii (GP) equations is obtained for the special case I 2/ I 1 = 1/2 and K = 3/2. Furthermore, applying a double-parabola approximation (DPA) to the energy density featured in GP theory allows us to define a DPA model, which is much simpler to handle than GP theory but nevertheless still captures the main physics. In particular, a compact analytic expression for the interfacial tension is derived that is useful for all f ,, | 2, and K. An application to wetting phenomena is presented for condensates adsorbed at an optical wall. The wetting phase boundary obtained within the DPA model nearly coincides with the exact one in GP theory.

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Section: Introductionmentioning

confidence: 99%

Static interfacial properties of Bose-Einstein-condensate mixtures

et al. 2015

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“…Let us begin with the idealized binary mixture of Bose gases, without external field, given by the Lagrangian density [19,20],…”

Section: Casimir Force Of Bose-einstein Condensate Mixturesmentioning

confidence: 99%

Casimir Force of Two-Component Bose–Einstein Condensates Confined by a Parallel Plate Geometry

Thụ

Theu

2017

J Stat Phys

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Using field theory we calculate the Casimir energy and Casimir force of two-component BoseEinstein condensates restricted between two parallel plates, in which Dirichlet and periodic boundary conditions applied. Our results show that, in one-loop approximation, the Casimir force equals to summation of the one of each component and it is vanishing in some cases: (i) inter-distance between two plates becomes large enough; (ii) intraspecies interaction is zero; (iii) interspecies interaction is full strong segregation.

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“…It is easy to check that Eq. (27) will get the form (22) when letting h 1 , h 2 tend to infinity. The small-k behavior of (27) reads…”

Section: B-two Hard-wall Casementioning

confidence: 99%

“…The phase separation in binary mixtures of Bose-Einstein condensates was theoretically predicted [1,2] and observed later in experiments [3][4][5][6][7][8]. Since then many works have been devoted to explore the statics, the dynamics and the ripplon modes of two segregated BECs [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. However, most of them concerned with the systems in infinite space, while all experimental realizations have been carried out in restricted regions of space with spatial structure being more and more complicated.…”

Section: Introductionmentioning

confidence: 99%

Ripplon Modes of Two Segregated Bose-Einstein Condensates in Confined Geometry

Phat¹,

Quyết²

2016

Comm. in Phys.

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The ripplon modes of two segregated Bose-Einstein condensates (BECs) confined by one and two hard walls are respectively studied by means of the hydrodynamic approach within the Gross-Pitaevskii (GP) theory. For the system at rest we find that due to the spatial restriction the dispersion relations are of the form \(\omega \sim {k^2}\) in low momentum limit for both cases, while for the system in motion parallel to the interface the dispersion relations for both cases are \(\omega \sim k\) at low momentum limit and, furthermore, the system becomes unstable.

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Bose–Einstein condensation in binary mixture of Bose gases

Cited by 24 publications

References 53 publications

Static interfacial properties of Bose-Einstein-condensate mixtures

Static interfacial properties of Bose-Einstein-condensate mixtures

Casimir Force of Two-Component Bose–Einstein Condensates Confined by a Parallel Plate Geometry

Ripplon Modes of Two Segregated Bose-Einstein Condensates in Confined Geometry

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