3.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The Dodd-Walls Centre for Photonic and Quantum TechnologiesNZ255 papers
- The University of QueenslandAU54 papers
- University of OxfordGB27 papers
- Centre National de la Recherche ScientifiqueFR25 papers
- MacDiarmid Institute for Advanced Materials and NanotechnologyNZ24 papers
- Australian National UniversityAU23 papers
- California Institute of TechnologyUS21 papers
- University of WollongongAU19 papers
- ARC Centre of Excellence for Engineered Quantum SystemsAU18 papers
- University of ArizonaUS18 papers
- University of AucklandNZ18 papers
- University of California, BerkeleyUS17 papers
36 papers · 1 filter
Correcting the apparent mutation rate acceleration at shorter time scales under a Jukes-Cantor model
Christopher Tuffley, Timothy White, Michael D. Hendy +1
At macroevolutionary time scales, and for a constant mutation rate, there is an expected linear relationship between time and the number of inferred neutral mutations (the "molecul…
A laser based accelerator for ultracold atoms
A. Rakonjac, A. B. Deb, S. Hoinka +3
We present first results on our implementation of a laser based accelerator for ultracold atoms. Atoms cooled to a temperature of 420 nK are confined and accelerated by means of la…
Stacey crossed products associated to Exel systems
Astrid an Huef, Iain Raeburn
There are many different crossed products by an endomorphism of a C*-algebra, and constructions by Exel and Stacey have proved particularly useful. Here we show that every Exel cro…
Quantum dynamics of atomic bright solitons under splitting and re-collision, and implications for interferometry
A. D. Martin, J. Ruostekoski
We numerically study the classical and quantum dynamics of an atomic bright soliton in a highly-elongated one-dimensional harmonic trap with a Gaussian barrier. In the regime of th…
On the group theoretical background of assigning stepwise mutations onto phylogenies
Mareike Fischer, Steffen Klaere, Minh Anh Thi Nguyen +1
In a recent paper, Klaere et al. modeled the impact of substitutions on arbitrary branches of a phylogenetic tree on an alignment site by the so-called One Step Mutation (OSM) matr…
On some fundamental results about higher-rank graphs and their C*-algebras
Robert Hazlewood, Iain Raeburn, Aidan Sims +1
Results of Fowler and Sims show that every k-graph is completely determined by its k-coloured skeleton and collection of commuting squares. Here we give an explicit description of…
Second-order hyperbolic Fuchsian systems. Asymptotic behavior of geodesics in Gowdy spacetimes
Florian Beyer, Philippe G. LeFloch
Recent work by the authors led to the development of a mathematical theory dealing with `second--order hyperbolic Fuchsian systems', as we call them. In the present paper, we adopt…
Probing the quantum state of a 1D Bose gas using off-resonant light scattering
A. G. Sykes, R. J. Ballagh
We present a theoretical treatment of coherent light scattering from an interacting 1D Bose gas at finite temperatures. We show how this can provide a nondestructive measurement of…
Effective Field Theory for Atom-Molecule Systems I: Formulation of Effective Field Theory
Catarina E Sahlberg, C W Gardiner
We present a model of a coupled bosonic atom-molecule system, using the recently developed c-field methods as the basis in our formalism. We derive expressions for the s-wave scatt…
Rotons in interacting ultracold Bose gases
Samuel C. Cormack, Dániel Schumayer, David A. W. Hutchinson
In three dimensions, non-interacting bosons undergo Bose-Einstein condensation at a critical temperature, , which is slightly shifted by , if the particles…
Data compression on the sphere
J. D. McEwen, Y. Wiaux, D. M. Eyers
Large data-sets defined on the sphere arise in many fields. In particular, recent and forthcoming observations of the anisotropies of the cosmic microwave background (CMB) made on…
Co-universal C*-algebras associated to aperiodic k-graphs
Sooran Kang, Aidan Sims
We construct a representation of each finitely aligned aperiodic k-graph Λ on the Hilbert space H^{ap} with basis indexed by aperiodic boundary paths in Λ. We show that the canonic…
Efficient computation of the branching structure of an algebraic curve
J. Frauendiener, C. Klein, V. Shramchenko
An efficient algorithm for computing the branching structure of a compact Riemann surface defined via an algebraic curve is presented. Generators of the fundamental group of the ba…
The enumeration of permutations avoiding 2143 and 4231
Michael Albert, M. D. Atkinson, Robert Brignall
We enumerate the pattern class Av(2143,4231) and completely describe its permutations. The main tools are simple permutations and monotone grid classes.
Geometric grid classes of permutations
Michael H. Albert, M. D. Atkinson, Mathilde Bouvel +2
A geometric grid class consists of those permutations that can be drawn on a specified set of line segments of slope \pm1 arranged in a rectangular pattern governed by a matrix. Us…
Yang-Yang thermometry and momentum distribution of a trapped one-dimensional Bose gas
M. J. Davis, P. B. Blakie, A. H. van Amerongen +2
We describe the use of the exact Yang-Yang solutions for the one-dimensional Bose gas to enable accurate kinetic-energy thermometry based on the root-mean-square width of an experi…
Kumjian-Pask algebras of higher-rank graphs
Gonzalo Aranda Pino, John Clark, Astrid an Huef +1
We introduce higher-rank analogues of the Leavitt path algebras, which we call the Kumjian-Pask algebras. We prove graded and Cuntz-Krieger uniqueness theorems for these algebras,…
Smooth Gowdy symmetric generalized Taub-NUT solutions
Florian Beyer, Jörg Hennig
We study a class of S3 Gowdy vacuum models with a regular past Cauchy horizon which we call smooth Gowdy symmetric generalized Taub-NUT solutions. In particular, we prove existence…
Stationary two-black-hole configurations: A non-existence proof
Gernot Neugebauer, Jörg Hennig
Based on the solution of a boundary problem for disconnected (Killing) horizons and the resulting violation of characteristic black hole properties, we present a non-existence proo…
Suppression of Kelvon-induced decay of quantized vortices in oblate Bose-Einstein Condensates
S. J. Rooney, P. B. Blakie, B. P. Anderson +1
We study the Kelvin mode excitations on a vortex line in a three-dimensional trapped Bose-Einstein condensate at finite temperature. Our stochastic Gross-Pitaevskii simulations sho…
Quantum tunneling of a vortex between two pinning potentials
O. Fialko, A. S. Bradley, J. Brand
A vortex can tunnel between two pinning potentials in an atomic Bose-Einstein condensate on a time scale of the order of 1s under typical experimental conditions. This makes it pos…
Witten spinors on maximal, conformally flat hypersurfaces
Jörg Frauendiener, James M. Nester, László B. Szabados
The boundary conditions that exclude zeros of the solutions of the Witten equation (and hence guarantee the existence of a 3-frame satisfying the so-called special orthonormal fram…
Direct Simulation Monte Carlo method for cold atom dynamics: classical Boltzmann equation in the quantum collision regime
A. C. J. Wade, D. Baillie, P. B. Blakie
In this paper we develop a direct simulation Monte Carlo (DSMC) method for simulating highly nonequilibrium dynamics of nearly degenerate ultra-cold gases. We show that our method…
Decomposing the C*-algebras of groupoid extensions
Jonathan H. Brown, Astrid an Huef
We decompose the full and reduced C*-algebras of an extension of a groupoid by the circle into a direct sum of twisted groupoid C*-algebras.