R J Ballagh
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Explore the profile of R J Ballagh including associated specialties, affiliations and a list of published articles.
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8
Citations
8
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Recent Articles
1.
Sykes A, Ballagh R
Phys Rev Lett
. 2012 Jan;
107(27):270403.
PMID: 22243293
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 the atomic...
2.
Tai K, Gibbs H, Rushford M, Peyghambarian N, Satchell J, Boshier M, et al.
Opt Lett
. 2009 Sep;
9(6):243-5.
PMID: 19721558
We report what to our knowledge are the first observations of an increase in the on-axis intensity of an intense cw on-resonance beam resulting from nonlinear absorption and diffraction during...
3.
Challis K, Ballagh R, Gardiner C
Phys Rev Lett
. 2007 Mar;
98(9):093002.
PMID: 17359154
We present a theoretical treatment of Bragg scattering of a degenerate Fermi gas in the weakly interacting BCS regime. Our numerical calculations predict correlated scattering of Cooper pairs into a...
4.
Simula T, Engels P, Coddington I, Schweikhard V, Cornell E, Ballagh R
Phys Rev Lett
. 2005 Mar;
94(8):080404.
PMID: 15783870
Repulsive laser potential pulses applied to vortex lattices of rapidly rotating Bose-Einstein condensates create propagating density waves which we have observed experimentally and modeled computationally to high accuracy. We have...
5.
Norrie A, Ballagh R, Gardiner C
Phys Rev Lett
. 2005 Mar;
94(4):040401.
PMID: 15783533
We apply the classical field method to simulate the production of correlated atoms during the collision of two Bose-Einstein condensates. Our nonperturbative method includes the effect of quantum noise, and...
6.
Simula T, Penckwitt A, Ballagh R
Phys Rev Lett
. 2004 Mar;
92(6):060401.
PMID: 14995219
We have performed numerical simulations of giant vortex structures in rapidly rotating Bose-Einstein condensates within the Gross-Pitaevskii formalism. We reproduce the qualitative features, such as oscillation of the giant vortex...
7.
Penckwitt A, Ballagh R, Gardiner C
Phys Rev Lett
. 2002 Dec;
89(26):260402.
PMID: 12484806
We give a simple unified theory of vortex nucleation and vortex lattice formation in which (i) the thermal cloud plays a crucial role; (ii) the basic process is due to...
8.
Blakie P, Ballagh R
Phys Rev Lett
. 2001 May;
86(18):3930-3.
PMID: 11328063
We demonstrate that Bragg scattering from a condensate can be sensitive to the spatial phase distribution of the initial state. This allows preferential scattering from a selected spatial region, and...