Restoration and Dynamical Breakdown of the φ\to -φSymmetry in the (1+1)-dimensional Massive sine-Gordon Field Theory

Details Restoration and Dynamical Breakdown of the φ\to -φSymmetry in the (1+1)-dimensional Massive sine-Gordon Field Theory Restoration and Dynamical Breakdown of the φ\to -φSymmetry in the (1+1)-dimensional Massive sine-Gordon Field Theory

1999-08-07

arxiv.org/abs/hep-th/9908055v1

J.Phys.G26:1187-1205,2000

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 14 figures (EPS)

Scientific paper

10.1088/0954-3899/26/8/307

Within the framework of the Gaussian wave-functional approach, we investigate the influences of quantum and finite-temperature effects on the Z_2-symmetry(\phi \to -\phi) of the (1+1)-dimensional massive sine-Gordon field theory. It is explicitly demonstrated that by quantum effects the Z_2-symmetry can be restored in one region of the parameter space and dynamically spontaneously broken in another region. Moreover, a finite-temperature effect can further restore the Z_2-symmetry only.

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