Using two measures theory to approach bags and confinement

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Abstract

We consider the question of bags and confinement in the framework of a theory which uses two volume elements √-gd4x and φd 4x, where φ is a metric independent density. For scale invariance a dilaton field φ is considered. Using the first order formalism, curvature ( φR and √-gR2 ) terms , gauge field term( φ √-FaμνFa αβgμαgνβ and √-gFaμνFa αβgμαgνβ ) and dilaton kinetic terms are introduced in a conformally invariant way. Exponential potentials for the dilaton break down (softly) the conformal invariance down to global scale invariance, which also suffers s.s.b. after integrating the equations of motion. The model has a well defined flat space limit. As a result of the s.s.b. of scale invariance phases with different vacuum energy density appear. Inside the bags the gauge dynamics is normal, that is non confining, while for the outside, the gauge field dynamics is confining.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalBlejske Delavnice iz Fizike - Bled Workshops in Physics
Volume12
Issue number2
StatePublished - 1 Dec 2011
Event14th Workshop on What Comes Beyond the Standard Models - Bled, Slovenia
Duration: 11 Jul 201121 Jul 2011

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