Conserving Gapless Mean-Field Theory for Bose-Einstein Condensates(General)

スポンサーリンク

概要

• 論文の詳細を見る

• We formulate a conserving gapless mean-field theory for Bose-Einstein condensates on the basis of a Luttinger-Ward thermodynamic functional. It is applied to a weakly interacting uniform gas with density n and s-wave scattering length a to clarify its fundamental thermodynamic properties. It is found that the condensation here occurs as a first-order transition. The shift of the transition temperature ΔT_c from the ideal-gas result T_0 is positive and given to the leading order by ΔT_c=2.33an^<1/3>T_0, in agreement with a couple of previous estimates. The theory is expected to form a new theoretical basis for trapped Bose-Einstein condensates at finite temperatures.

• 社団法人日本物理学会の論文
• 2005-07-15

著者

• Kita Takafumi

  Division Of Physics Graduate School Of Science Hokkaido University

関連論文

• Ab Initio Calculations of H_ for Nb, NbSe_2, and MgB_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Conserving Gapless Mean-Field Theory for Weakly Interacting Rose Gases(Condensed Matter: Structure, Mechanical and Thermal Properties)
• Nonmagnetic Impurity Effects in MgB_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Theory of Flux-Flow Resistivity near H_ for s-Wave Type-II Superconductors(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Gap Anisotropy and de Haas-van Alphen Effect in Type-II Superconductors
• Theory of Interacting Bloch Electrons in a Magnetic Field(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Conserving Gapless Mean-Field Theory for Bose-Einstein Condensates(General)
• Ab Initio Calculations of H_ for Nb, NbSe_2, and MgB_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Gap Anisotropy and de Haas-van Alphen Effect in Type-II Superconductors

スポンサーリンク