Conference Summary August 6, 2006

Conference Summary

August 6, 2006

Outline

The Conference Committee

The Conference Organization

Topical Summary

Looking Forward to QFS2007 in Kazan

Outline

The Conference Committee

The Conference Organization

Topical Summary

Looking Forward to QFS2007 in Kazan

To find information on any QFS or LT conference:Go to the web and to Google and type “QFS98”

The Conference Committee

ConferenceTakao Mizusaki Co-Chair Kyoto UniversityAkira Matsubara Co-Chair Kyoto University

The Conference Committee

ConferenceTakao Mizusaki Co-Chair Kyoto UniversityAkira Matsubara Co-Chair Kyoto University

Program Yuichi Okuda (chair)  Tokyo Tech.

Katsuhiko Nagai Hiroshima UniversityHiroshi Fukuyama University of Tokyo

The Conference Committee

ConferenceTakao Mizusaki Co-Chair Kyoto UniversityAkira Matsubara Co-Chair Kyoto University

Program Yuichi Okuda (chair)  Tokyo Tech.

Katsuhiko Nagai Hiroshima UniversityHiroshi Fukuyama University of Tokyo

Publication  Osamu Ishikawa Osaka City University

The Conference Committee

Toshikazu Arai Kyoto UniversityAkira Fukuda Kyoto UniversityKohji Fukuda Kyoto University

Yutaka Sasaki Kyoto UniversityAnju Sawada Kyoto University

Makoto Tsubota Osaka City UniversityTomohiro Ueno Kyoto University

The Conference Committee

Toshikazu Arai Kyoto UniversityAkira Fukuda Kyoto UniversityKohji Fukuda Kyoto University

Yutaka Sasaki Kyoto UniversityAnju Sawada Kyoto University

Makoto Tsubota Osaka City UniversityTomohiro Ueno Kyoto University

Others, including students

Major Topics – Talks and Posters

Superfluid 3HeSuperfluid 4He

Quantum Crystals and SupersolidVortices and Turbulence

Cold AtomsNormal Liquid 3He and 4He

TechniquesOther Topics

Special Sessions

Physics in MicrogravityQuantum TurbulenceLiquid 3He in Aerogel

Supersolid 4HeQuantum Fluids in Nanopores and Graphite

Cryogenic Instrumentation

Poster Preview

Excursions

Superb Banquet

Helpful People

Poster Preview

Excursions

Superb Banquet

Helpful People

Plenty of Heat

Major Topics – Talks and Posters

Superfluid 3HeSuperfluid 4He

Quantum CrystalsVortices and Turbulence

Cold AtomsNormal Liquid 3He and 4He

TechniqueOther Topics

Special Sessions

Physics in MicrogravityQuantum TurbulenceLiquid 3He in Aerogel

Supersolid 4HeQuantum Fluids in Nanopores and Graphite

Cryogenic Instrumentation

Vortices and Turbulence

Advances in particle velocimetry to visualize vortices and turbulence in superfluids

Direct images of tracer particles – what are they imaging?

The use of Hydrogen, with ability to vary the particle size

Electron bubbles – potential to visualize vortex lines

Is the normal fluid uniform in a counterflow channel?

ULT quantum turbulence observations from Lancaster

Theory of a Twisted Vortex state

The decay of turbulence needs more theoretical study.

Cold Atoms

Creation of a Fermionic System in the unitary regimeof the BCS-BEC crossover.

Optical lattices make a bridge between atomic and solid state physics

Feshbach resonances continue to offer possibilities

Weak-Link dymanics/coherence for cold atom collections

Questions about the physics of Fermions with unbalanced spin populations are open.

The Gross-Pitaevskii equation remains important – It is remarkable how useful this equation is.

Supersolids

Robust observations in behavior for all the Penn State torsionaloscillator experiments. Very consistent and stable results over many samples in several geometries; wide pressure range.

Complete absence of clear positive results by any other technique:

pressure-driven flowtransverse sound4th sound

But:rotating cryostat – may be showing somethinghigh frequency, low amplitude sound resonances

Paris melting curve experiment – and the grain boundary interpretation, consistent with those experiments.

More on Supersolids

Some important questions:

Is the reported interpretation of a critical velocity really acritical velocity? Or, is it a critical amplitude or acceleration?

Is the grain boundary interpretation relevant to experiments athigher pressure?

What will torsional oscillator results be like when samples are grownbe techniques other than blocked capillary?

What role does annealing play?

What is the role of disorder in the solid?

Why does the NCRI have such an abrupt corner at low temperature?

What is the real role of 3He?

Superfluid 3He

Interplay between Andreev statets at a surface and the superfluid 3He collective modes

Acoustic experiments – both longitudinal and transverse

Key question: What is the nature of the A-like phase of superfluid 3He in Aerogel?

How does anisotropy in Aerogel effect superfluid 3He?

Behavior of the PCP is not agreed on.

Sample-dependent texture of the order parameter.

Confined Geometry – other than Aerogel

Quantum criticality in 2-D 3He films

Behavior of 3He in two dimensions

Low dimensional behavior in nanopores – two perspectives: (1)1-D physics in the pores, (2) Adsorption phenomena, e.g.on nanotube bundles

Quantum phase transitions in porous media

Other interesting results

Visualization of magnetic domains in U2D2 3He.

Optical modes in solid 4He

Phase synchronization in aperture arrays; potential forHigh precision gyroscopes.

Behavior of the phase near Lambda transition (SOC).

Electric induction in He II counterflow.

Other interesting results

Visualization of magnetic domains in U2D2 3He.

Phase synchronization in aperture arrays; potential forHigh precision gyroscopes.

Behavior of the phase near Lambda transition (SOC).

Electric induction in He II counterflow.

The connection between 3He and the early universe.

And, many, many others.

The field is remarkably vibrant and stimulating!

New advances will be forthcoming

Superfluid 3HeSuperfluid 4HeQuantum CrystalsVortices and TurbulenceCold Atoms

This conference has been an exceptional gathering –

Kind and helpful hosts.A beautiful city of history and culture.Fine and convenient local meeting rooms.Many colleagues, old and new.

Most important:

Excellent and exciting physics,with very stimulating conversations.

Short personal thankyou:

Tomohiro Ueno

Keiya ShirahamaHarry Kojima

Takao Mizusaki

The Conference Committee

ConferenceTakao Mizusaki Co-Chair Kyoto UniversityAkira Matsubara Co-Chair Kyoto University

Program Yuichi Okuda (chair)  Tokyo Tech.

Katsuhiko Nagai Hiroshima UniversityHiroshi Fukuyama University of Tokyo

Publication  Osamu Ishikawa Osaka City University

 Toshikazu Arai Kyoto UniversityAkira Fukuda Kyoto UniversityKohji Fukuda Kyoto University

Yutaka Sasaki Kyoto UniversityAnju Sawada Kyoto University

Makoto Tsubota Osaka City UniversityTomohiro Ueno Kyoto University

Next meetings:

Kazan – QFS2007Amsterdam – LT25 - 2008

??? – QFS2009

To find information on any QFS or LT conference:Go to the web and to Google and type “QFS98”

Includes guidelines for those who may wish to host at QFS meeting.

Conference summary prepared and delivered by:

Bob Hallock, Univ. of Mass.

August 6, 2006.