Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Wilkin, N."'
Publikováno v:
Sci. Rep. 10, 17411 (2020)
Phyllotaxis, the regular arrangement of leaves or other lateral organs in plants including pineapples, sunflowers and some cacti, has attracted scientific interest for centuries. More recently there has been interest in phyllotaxis within physical sy
Externí odkaz:
http://arxiv.org/abs/2001.10501
Autor:
Tomlinson, A. A., Wilkin, N. K.
Phyllotactic states are regular lattice-like structures on cylinders and are a botanical classification scheme. In this communication, we report a sequence of transitions between phyllotactic states for particles with a repulsive particle-particle in
Externí odkaz:
http://arxiv.org/abs/2001.03948
Autor:
Wilkin, N. K., Gunn, J. M. F.
Instabilities are predicted for a sufficiently long hollow photonic optical fiber, or "cavity", containing a one dimensional Bose-gas in the presence of a classical, far red-detuned, confined weak electromagnetic mode. We examine both a single beam w
Externí odkaz:
http://arxiv.org/abs/1310.6771
Publikováno v:
PRL. 101, 110401 (2008)
With the imminent advent of mesoscopic rotating BECs in the lowest Landau level (LLL) regime, we explore LLL vortex nucleation. An exact many-body analysis is presented in a weakly elliptical trap for up to 400 particles. Striking non-mean field feat
Externí odkaz:
http://arxiv.org/abs/0707.3065
In rapidly rotating bose systems we show that there is a region of anomalous hydrodynamics whilst the system is still condensed, which coincides with the mean field quantum Hall regime. An immediate consequence is the absence of a normal fluid in any
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509746
Publikováno v:
Phys. Rev. Lett. 87, 120405 (2001)
We investigate the groundstates of weakly interacting bosons in a rotating trap as a function of the number of bosons, $N$, and the average number of vortices, $N_V$. We identify the filling fraction $\nu\equiv N/N_V$ as the parameter controlling the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0107005
Autor:
Smith, R A, Wilkin, N K
We consider a model of $N$ two-dimensional bosons in a harmonic potential with weak repulsive delta-function interactions. We show analytically that, for angular momentum $L\le N$, the elementary symmetric polynomials of particle coordinates measured
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005230
Autor:
Cooper, N. R., Wilkin, N. K.
Publikováno v:
Phys. Rev. B 60, R16279 (1999)
We study the properties of rotating Bose-Einstein condensates in parabolic traps, with coherence length large compared to the system size. In this limit, it has been shown that unusual groundstates form which cannot be understood within a conventiona
Externí odkaz:
http://arxiv.org/abs/cond-mat/9907498
Autor:
Wilkin, N. K., Gunn, J. M. F.
We provide evidence for several novel phases in the dilute limit of rotating BECs. By exact calculation of wavefunctions and energies for small numbers of particles, we show that the states near integer angular momentum per particle are best consider
Externí odkaz:
http://arxiv.org/abs/cond-mat/9906282
Autor:
Wilkin, N. K., Jensen, Henrik Jeldtoft
We investigate the effects of disorder on a layered superconductor. The clean system is known to have a first order phase transition which is clearly identified by a sharp peak in the specific heat. The peak is lost abruptly as the strength of the di
Externí odkaz:
http://arxiv.org/abs/cond-mat/9705271