Elementary Excitations in Quantum Fluids

1. Front Matter

   Pages I-X

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2. Introduction

   1. Introduction

      • K. Ohbayashi, M. Watabe

      Pages 1-5

3. Theory of Liquid 4He at Finite Temperatures

   1. Front Matter

      Pages 7-7

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   2. Microscopic Theory of Strongly Coupled Boson Quantum Fluids

      • C. E. Campbell, B. E. Clements

      Pages 8-22

   3. Elementary Excitations in Bose-Condensed Liquids and Gases at Finite Temperatures

      • A. Griffin

      Pages 23-30

4. Experimental Study of Elementary Excitations: Raman Scattering and Neutron Scattering

   1. Front Matter

      Pages 31-31

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   2. Raman Scattering of Liquid 4He

      • K. Ohbayashi

      Pages 32-52

   3. Polarization Study of Raman Scattering from Quantum Fluids

      • Masayuki Udagawa, Mitsuo Watabe, Kohji Ohbayashi

      Pages 53-58

   4. Temperature Dependence of S(Q, ω) for Liquid ⁴He

      • E. C. Svensson

      Pages 59-95

   5. Upscattering of Ultra-Cold Neutrons (UCN) by Excitations in Superfluid 4He

      • R. Golub

      Pages 96-98

   6. Excitations in 4He Films

      • H. J. Lauter, V. L. P. Frank, H. Godfrin, P. Leiderer

      Pages 99-104

5. Theoretical Study of Elementary Excitations and Related Properties: Raman Scattering and the Dynamic Structure Factor S(k, ω)

   1. Front Matter

      Pages 105-105

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   2. Theory of Inelastic Light Scattering from 4He

      • J. W. Halley

      Pages 106-116

   3. Effect of the Three-Excitation States on the Raman Scattering from Superfluid 4He

      • Fumiaki Iwamoto

      Pages 117-131

   4. Reflections on Excitations in Superfluid Helium

      • J. Ruvalds

      Pages 132-139

   5. On Pitaevskii’s Branch near the Two-Roton Threshold at Finite Temperatures

      • Katsuhiko Nagai

      Pages 140-143

   6. Determination of the Roton-Maxon Interaction

      • Kenji Fukushima, Fumikazu Iseki

      Pages 144-149

   7. Two-Particle Excitations and Pair Correlations in He-II

      • R. Sridhar

      Pages 150-154

   8. Two-Component Character of S(k, ω) in Superfluid ⁴He

      • K. Ishikawa, K. Yamada

      Pages 155-159

   9. Theory of Temperature Dependence of Elementary Excitation Energy

      • S. Sasaki

      Pages 160-166

This volume is the proceedings of the Hiroshima Symposium on Elementary Excitations in Quantum Fluids, which was held on August 17 and 18, 1987, in Hiroshima, Japan, and was attended by thirty-two scientists from seven countries. Quantum fluids have been the subject of intense study as a consequence of their superfluid properties at very low temperatures. Elementary excitations in them are an important concept about which many important discoveries have been made in recent years. This symposium was arranged by a group of physicists from Hiroshima University to provide an opportunity to discuss these recent developments. It was conceived as a satellite conference of the 18th International Conference on Low Temperature Physics (LT 18), which was held in Kyoto, August 20-26, 1987. Emphasis was placed on the dynamic structures and correlations of ele­ mentary excitations, which resulted in invited speakers being selected from this field. However, enthusiastic contributors reported notable new results on various other aspects of the elementary excitations, which made the sympo­ sium lively and successful. It is our great satisfaction to present this volume, which includes papers of good quality and originality. We thank all the parti­ cipants for their cooperation throughout this symposium, and for preparing their manuscripts within a reasonable time.

• dispersion
• electron
• neutron diffraction
• scattering
• vortices

• Faculty of Integrated Arts and Sciences, Hiroshima University, Hiroshima 730, Japan

  Kohji Ohbayashi, Mitsuo Watabe

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