Spontaneous Broken Symmetries, Loop Expansions and Magnon Fields

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概要

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• We demonstrate that the finite temperature effective potential methods used in φ^4 field theory to study the symmetry behavior can be successfully applied to magnon fields. The Heisenberg Hamiltonian is converted into field theoretical form by the use of the Holstein-Primakoff transformations and continuum limit methods. Diagrammatic procedures are utilized to calculate the effective potential to the two-loop approximation. The critical temperature is determined by locating the point where the symmetry is restored. In constrast with φ^4 theory, the gauge symmetry is broken above the critical point and is restored below the critical point. Both high and low temperature approximations are utilized.

• 理論物理学刊行会の論文
• 1977-07-25

著者

• Swanson Mark

  Physics Department University Of Missouri

• HUANG Justin

  Physics Department, National Central University

• SWANSON Mark

  Physics Department, University of Missouri

関連論文

• Spontaneous Broken Symmetries, Loop Expansions and Magnon Fields

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