Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap

We report on the transport of mixed quantum degenerate gases of bosonic 87Rb and fermionic 40K in a harmonic potential provided by a modified QUIC trap. The samples are transported over a distance of 6 mm to the geometric center of the anti-Helmholtz coils of the QUIC trap. This transport mechanism was implemented by a small modification of the QUIC trap and is free of losses and heating. It allows all experiments using QUIC traps to use the highly homogeneous magnetic fields that can be created in the center of a QUIC trap and improves the optical access to the atoms, e.g., for experiments with optical lattices. This mechanism may be cascaded to cover even larger distances for applications with quantum degenerate samples.Comment: 7 pages, 8 figure

Josephson oscillation of a superfluid Fermi gas

Using the complete numerical solution of a time-dependent three-dimensional mean-field model we study the Josephson oscillation of a superfluid Fermi gas (SFG) at zero temperature formed in a combined axially-symmetric harmonic plus one-dimensional periodic optical-lattice (OL) potentials after displacing the harmonic trap along the axial OL axis. We study the dependence of Josephson frequency on the strength of the OL potential. The Josephson frequency decreases with increasing strength as found in the experiment of Cataliotti et al. [Science 293 (2001) 843] for a Bose-Einstein condensate and of the experiment of Pezze et al. [Phys. Rev. Lett. 93 (2004) 120401] for an ideal Fermi gas. We demonstrate a breakdown of Josephson oscillation in the SFG for a large displacement of the harmonic trap. These features of Josephson oscillation of a SFG can be tested experimentally.Comment: 7 pages, 10 figure

Circular 99

We initiated this study to develop a single small scale boiling tank and test a drying technique on samples of velvet antler

Further Education Funding Council : circular : 99/47 : monitoring growth 1998-99

"Guidance on the monitoring of growth for 16 to 18 year olds and for widening participation" -- front cover

Nucleon Form Factors '99

We review recent progress in the experimental knowledge of and theoretical speculations about nucleon form factors, with special emphasis on the large Q2 region.Comment: 4 pages, latex, no figures. Report on the Form Factor session held during the Nucleon99 workshop, Frascati, Italy, June 1999, to be published in Nucl. Phys.

Further Education Funding Council : circular : 99/52 : final funding unit return for 1998-99

"Method of making the final return of funding units for 1998-99. Returns from colleges, higher education institutions and external institutions are requested by 4 February 2000" -- front cover

Light Quark Masses 99

I give a short historical and a critical review of the determinations of light quark masses from QCD at dawn of the next millennium. QCD spectral sum rules combined with ChPT give, to order $\alpha_s^3$, the world average for the running masses: $\bar{m}_s$(2 GeV)= $(118.9\pm 12.2)$ MeV, $\bar{m}_d(2~{GeV})=(6.3\pm 0.8)$ MeV, $\bar{m}_u(2~{GeV})=(3.5\pm 0.4)$ MeV and the corresponding values of the invariant masses given in Eq. 24. Lower and upper bounds derived from the positivity of spectral moments are presented in Tables 2 and 3. For a comparison, we critically review the recent lattice results (section 8 and Table 5) and attempt to deduce the present {\it QCD grand average} determination (Table 6): $\bar{m}_s$(2 GeV)= $(110.9\pm 8.8)$ MeV, to be used with a great care. Then, we deduce the value: $B_6^{1/2}-0.45(\rm resp.~0.32)B_8^{3/2}\simeq 1.6\pm 0.4~(\rm resp.~1.1\pm 0.3)$ and the lower bound $1.1\pm 0.2$ (resp. $0.7\pm 0.1$), for the combination of the penguin operators, governing the CP-violating parameters $\epsilon'/\epsilon$ without (resp. with) the inclusion of the final state interaction effects. The result signals a possible deviation from the leading 1/N prediction by about $1\sim 3\sigma$, which should be tested using accurate non-perturbative calculations.Comment: Latex2e two-column 13 pages 5 Tables + 1 figure. Review talk given at QCD 99 (Montpellier 7-13th July 1999) and plenary talk at QCD Confinement 2000 (Osaka 7-10th March 2000) Report-n0: Montpellier preprint PM/99-50. Updated version and application to epsilon'/epsilo

Archiving scientific blogs with ArchivePress

A poster describing the ArchivePress blog archiving approach and project, presented at the International Digital Curation Conference, London, December 2009

Further Education Funding Council : circular : 99/43 : audit of 1998-99 final funding unit claim and of the 1998-99 individualised student record data

"Guidance to heads of institutions and audit committee chairs receiving Council funds in 1998-99 and to external auditors undertaking audits of 1998-99 final funding unit claims and student number returns. Includes guidance on in-year audit checks for 1999-2000. Audit reports requested by 4 February 2000" -- front cover