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19932026
most citedThe role of artificial intelligence in achieving the Sustainable Development Goals

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cond-mat.other2019★ 58 cited

Coherent vortex dynamics in a strongly-interacting superfluid on a silicon chip

Yauhen P. Sachkou, Christopher G. Baker, Glen I. Harris +8

Two-dimensional superfluidity and quantum turbulence are directly connected to the microscopic dynamics of quantized vortices. However, surface effects have prevented direct observ…

cond-mat.other2009★ 6 cited

Geometric scaling in the spectrum of an electron captured by a stationary finite dipole

Dániel Schumayer, Brandon P. van Zyl, Rajat K. Bhaduri +1

We examine the energy spectrum of a charged particle in the presence of a {\it non-rotating} finite electric dipole. For {\emph{any}} value of the dipole moment above a certain…

cond-mat.other2009★ 16 cited

Quantifying Finite Temperature Effects in Atom Chip Interferometry of Bose-Einstein Condensates

R. G. Scott, D. A. W. Hutchinson, T. E. Judd +1

We quantify the effect of phase fluctuations on atom chip interferometry of Bose-Einstein condensates. At very low temperatures, we observe small phase fluctuations, created by mea…

cond-mat.other2009★ 5 cited

Adiabatic cooling of a tunable Bose-Fermi mixture in an optical lattice

O. Soe Sorensen, N. Nygaard, P. B. Blakie

We consider an atomic Fermi gas confined in a uniform optical lattice potential, where the atoms can pair into molecules via a magnetic field controlled narrow Feshbach resonance.…

cond-mat.other2008★ 21 cited

PGPE theory of finite temperature collective modes for a trapped Bose gas

A. Bezett, P. B. Blakie

We develop formalism based on the projected Gross Pitaevskii equation to simulate the finite temperature collective mode experiments of Jin et al. [PRL 78, 764 (1997)]. We examine…

cond-mat.other2008★ 14 cited

Incoherence of Bose-Einstein condensates at supersonic speeds due to quantum noise

R. G. Scott, D. A. W. Hutchinson

We calculate the effect of quantum noise in supersonic transport of Bose-Einstein condensates. When an obstacle obstructs the flow of atoms, quantum fluctuations cause atoms to be…

cond-mat.other2008★ 2 cited

Statistical mechanics of a Feshbach coupled Bose-Fermi gas in an optical lattice

O. Soe Sorensen, N. Nygaard, P. B. Blakie

We consider an atomic Fermi gas confined in a uniform optical lattice potential, where the atoms can pair into molecules via a magnetic field controlled narrow Feshbach resonance.…

cond-mat.other2008★ 19 cited

Analysis of the Holzmann-Chevallier-Krauth theory for the trapped quasi-two-dimensional Bose gas

R. N. Bisset, D. Baillie, P. B. Blakie

We provide an in depth analysis of the theory proposed by Holzmann, Chevallier and Krauth (HCK) [Europhys. Lett., {\bf 82}, 30001 (2008)] for predicting the temperature at which th…

cond-mat.other2008★ 31 cited

Dynamical thermalization and vortex formation in stirred 2D Bose-Einstein condensates

T. M. Wright, R. J. Ballagh, A. S. Bradley +2

We present a quantum mechanical treatment of the mechanical stirring of Bose-Einstein condensates using classical field techniques. In our approach the condensate and excited modes…

cond-mat.other2008★ 560 cited

Spontaneous vortices in the formation of Bose-Einstein condensates

C. N. Weiler, T. W. Neely, D. R. Scherer +3

Phase transitions are ubiquitous in nature, ranging from protein folding and denaturisation, to the superconductor-insulator quantum phase transition, to the decoupling of forces i…

cond-mat.other2008★ 69 cited

Quasicondensation and coherence in the quasi-two-dimensional trapped Bose gas

R. N. Bisset, M. J. Davis, T. P. Simula +1

We simulate a trapped quasi-two-dimensional Bose gas using a classical field method. To interpret our results we identify the uniform Berezinskii-Kosterlitz-Thouless (BKT) temperat…

cond-mat.other2008★ 37 cited

Theory of correlations between ultra-cold bosons released from an optical lattice

E. Toth, A. M. Rey, P. B. Blakie

In this paper we develop a theoretical description of the correlations between ultra-cold bosons after free expansion from confinement in an optical lattice. We consider the system…

cond-mat.other2007★ 41 cited

Superfluidity of an interacting trapped quasi-2D Bose gas

T. P. Simula, M. J. Davis, P. B. Blakie

We investigate the harmonically trapped interacting Bose gas in a quasi-2D geometry using the classical field method. The system exhibits quasi-long-range order and non-classical r…

cond-mat.other2007★ 23 cited

Two point correlations of a trapped interacting Bose gas at finite temperature

A. Bezett, E. Toth, P. B. Blakie

We develop a computationally tractable method for calculating correlation functions of the finite temperature trapped Bose gas that includes the effects of s-wave interactions. Our…

cond-mat.other2007★ 30 cited

Bose-Einstein condensation in an optical lattice

P. B. Blakie, Wen-Xin Wang

In this paper we develop an analytic expression for the critical temperature for a gas of ideal bosons in a combined harmonic lattice potential, relevant to current experiments usi…

cond-mat.other2007★ 35 cited

Dynamical instabilities of Bose-Einstein condensates at the band-edge in one-dimensional optical lattices

Andrew J. Ferris, Matthew J. Davis, Reece W. Geursen +2

We report on experiments that demonstrate dynamical instability in a Bose-Einstein condensate at the band-edge of a one-dimensional optical lattice. The instability manifests as ra…

cond-mat.other2007★ 52 cited

The Quantum de Laval Nozzle: stability and quantum dynamics of sonic horizons in a toroidally trapped Bose gas containing a superflow

P. Jain, A. S. Bradley, C. W. Gardiner

We study an experimentally realizable system containing stable black hole-white hole acoustic horizons in toroidally trapped Bose-Einstein condensates - the quantum de Laval nozzle…

cond-mat.other2007★ 140 cited

Analogue model of a FRW universe in Bose-Einstein condensates: Application of the classical field method

Piyush Jain, Silke Weinfurtner, Matt Visser +1

Analogue models of gravity have been motivated by the possibility of investigating phenomena not readily accessible in their cosmological counterparts. In this paper, we investigat…

cond-mat.other2007★ 6 cited

Calorimetry of Bose-Einstein condensates

P. B. Blakie, E. Toth, M. J. Davis

We outline a practical scheme for measuring the thermodynamic properties of a Bose-Einstein condensate as a function of internal energy. We propose using Bragg scattering and contr…

cond-mat.other2007★ 3 cited

Reconstruction of Rb-Rb inter-atomic potential from ultracold Bose-gas collision

Dániel Schumayer, Oliver Melchert, Werner Scheid +1

Scattering phase shifts obtained from 87Rb Bose-gas collision experiments are used to reconstruct effective potentials resulting, self-consistently, in the same scattering events o…

cond-mat.other2006★ 12 cited

Quantum Scattering of Distinguishable Bosons using an Ultracold Atom Collider

Angela S. Mellish, Niels Kjaergaard, Paul S. Julienne +1

We describe a new implementation of magnetic collider for investigating cold collisions between ultracold atomic clouds in different spin states, and we use this to investigate sca…

cond-mat.other2006★ 5 cited

Density functional theory of the trapped Fermi gas in the unitary regime

Brandon P. van Zyl, D. A. W. Hutchinson, Melodie Need

We investigate a density-functional theory (DFT) approach for an unpolarized trapped dilute Fermi gas in the unitary limit . A reformulation of the recent work of T. Papenbrock [Ph…

cond-mat.other2006★ 20 cited

Transmission and Reflection of Bose-Einstein Condensates Incident on a Gaussian Potential Barrier

A. M. Martin, R. G. Scott, T. M. Fromhold

We investigate how Bose-Einstein condensates, whose initial state is either irrotational or contains a single vortex, scatter off a one-dimensional Gaussian potential barrier. We f…

cond-mat.other2006★ 34 cited

Disruption of reflecting Bose-Einstein condensates due to inter-atomic interactions and quantum noise

R. G. Scott, D. A. W. Hutchinson, C. W. Gardiner

We perform fully three-dimensional simulations, using the truncated Wigner method, to investigate the reflection of Bose-Einstein condensates from abrupt potential barriers. We sho…