Matches in SemOpenAlex for { <https://semopenalex.org/work/W2014768009> ?p ?o ?g. }
- W2014768009 abstract "Restricting the functional integral to the Gribov region $ensuremath{Omega}$ leads to a deep modification of the behavior of Euclidean Yang-Mills theories in the infrared region. For example, a gluon propagator of the Gribov type, $frac{{k}^{2}}{{k}^{4}+{stackrel{^}{ensuremath{gamma}}}^{4}}$, can be viewed as a propagating pair of unphysical modes, called here $i$-particles, with complex masses $ifmmodepmelsetextpmfi{}i{stackrel{^}{ensuremath{gamma}}}^{2}$. From this viewpoint, gluons are unphysical and one can see them as being confined. We introduce a simple toy model describing how a suitable set of composite operators can be constructed out of $i$-particles whose correlation functions exhibit only real branch cuts, with associated positive spectral density. These composite operators can thus be called physical and are the toy analogy of glueballs in the Gribov-Zwanziger theory." @default.
- W2014768009 created "2016-06-24" @default.
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- W2014768009 date "2010-07-30" @default.
- W2014768009 modified "2023-09-26" @default.
- W2014768009 title "Gribov horizon and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>i</mml:mi></mml:math>-particles: About a toy model and the construction of physical operators" @default.
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- W2014768009 doi "https://doi.org/10.1103/physrevd.82.025021" @default.
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