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The ghost condensate <epsilon^{abc} cbar^b c^c> is considered together withthe gluon condensate <A^2> in SU(2) Euclidean Yang-Mills theories quantized inthe Landau gauge. The vacuum polarization ceases to be transverse due to thenonvanishing condensate <epsilon^{abc} cbar^b c^c>. The gluon propagator itselfremains transverse. By polarization effects, this ghost condensate induces thena splitting in the gluon mass parameter, which is dynamically generated through<A^2>. The obtained effective masses are real when <A^2> is included in theanalysis. In the absence of <A^2>, the already known result that the ghostcondensate induces effective tachyonic masses is recovered. At the one-looplevel, we find that the effective diagonal mass becomes smaller than theoff-diagonal one. This might serve as an indication for some kind of Abeliandominance in the Landau gauge, similar to what happens in the maximal Abeliangauge.Comment: 30 pages. 1 .eps figur

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

Combined study of the gluon and ghost condensates<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy="false">⟨</mml:mo><mml:msubsup><mml:mi>A</mml:mi><mml:mi>μ</mml:mi><mml:mn>2</mml:mn></mml:msubsup><mml:mo stretchy="false">⟩</mml:mo></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy="false">⟨</mml:mo><mml:msup><mml:mi>ε</mml:mi><mml:mrow><mml:mi>a</mml:mi><mml:mi>b</mml:mi><mml:mi>c</mml:mi></mml:mrow…

Combined study of the gluon and ghost condensates⟨Aμ2⟩and⟨εabc