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Publications (2)11.24 Total impact

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    Wolfgang Mück, Maurizio Prisco
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    ABSTRACT: Using techniques developed in a previous paper three-point functions in field theories described by holographic renormalization group flows are computed. We consider a system of one active scalar and one inert scalar coupled to gravity. For the GPPZ flow, their dual operators create states that are interpreted as glueballs of the N=1 SYM theory, which lies at the infrared end of the renormalization group flow. The scattering amplitudes for three-glueball processes are calculated providing precise predictions for glueball decays in N=1 SYM theory. Numerical results for low-lying glueballs are included. Comment: 34 pages v2: comments on local terms and references added, v3: version published in JHEP
    Journal of High Energy Physics 02/2004; · 5.62 Impact Factor
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    Massimo Bianchi, Wolfgang Mück, Maurizio Prisco
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    ABSTRACT: We exploit a gauge invariant approach for the analysis of the equations governing the dynamics of active scalar fluctuations coupled to the fluctuations of the metric along holographic RG flows. In the present approach, a second order ODE for the active scalar emerges rather simply and makes it possible to use the Green's function method to deal with (quadratic) interaction terms. We thus fill a gap for active scalar operators, whose three-point functions have been inaccessible so far, and derive a general, explicitly Bose symmetric formula thereof. As an application we compute the relevant three-point function along the GPPZ flow and extract the irreducible trilinear couplings of the corresponding superglueballs by amputating the external legs on-shell. Comment: v2: reference added, typos corrected v3: sign convention for background changed, agrees with version published in JHEP
    Journal of High Energy Physics 10/2003; · 5.62 Impact Factor