Spontaneous Symmetry Breaking in (1+1)-Dimensional Light-Frontφ^4 Theory(The Physics of Elementary Particles and Fields)

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概要

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• Spontaneous symmetry breaking in (1+1)-dimensionalφ^4 theory is studied with discretized light-front quantization. To compute the critical coupling we calculate the vacuum expectation value of a zero mode through the commutation relations [a_0, a_n] in the Tamm-Dancoff-like approximation. We also estimate effects of non-diagonal interactions to the critical coupling. Our result of the critical coupling is λ_cr = 28.0 μ^2/&plank;, which is consistent with the equal-time result 22 μ^2/&plank; ≤ λ_cr ≤ 55.5 μ^2/&plank;.

• 一般社団法人日本物理学会の論文
• 2003-01-15

著者

• OSHIMA Kazuto

  Gunma National College of Technology

• Oshima Kazuto

  Gunma College Of Technology

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