關鍵字查詢 | 類別:期刊論文 | | 關鍵字:Vacuum structure of two-dimensional ϕ4 theory on the orbifold S1/Z2

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1 94/1 物理系 曹慶堂 教授 期刊論文 發佈 Vacuum structure of two-dimensional ϕ4 theory on the orbifold S1/Z2 , [94-1] :Vacuum structure of two-dimensional ϕ4 theory on the orbifold S1/Z2期刊論文Vacuum structure of two-dimensional ϕ4 theory on the orbifold S1/Z2Cho, H. T.淡江大學物理學系College Park: American Physical SocietyPhysical Review D (Particles, Fields, Gravitation and Cosmology) 72(6), 065010(7pages)We consider the vacuum structure of two-dimensional ϕ4 theory on S1/Z2 both in the bosonic and the supersymmetric cases. When the size of the orbifold is varied, a phase transition occurs at Lc=2π/m, where m is the mass of ϕ. For L<Lc, there is a unique vacuum, while for L>Lc, there are two degenerate vacua. We also obtain the 1-loop quantum corrections around these vacuum solutions, exactly in the case of L<Lc and perturbatively for L greater than but close to Lc. Including the fermions we find that the “chiral” zero modes around the fixed points are different for L<Lc and L>Lc. As for the quantum corrections, the fermionic contributions cancel the singular part of the bosonic contributions at
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