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Exotic hybrid quark potentials

“…For subsequent applications, we will need to know the 10-dimensional geometry. One possibility here is to take [9] ds 2 = R 2 w dt 2 + d x 2 + dr 2 + e −sr 2 g…”

Model of the N -quark potential in SU ( N ) gauge theory using gauge-string duality

“…In discussing baryonic Wilson loops, we adapt the formalism [17,18] proposed within the AdS/CFT correspondence [19] to our purposes. First, we take the following ansatz for the background geometry [20] ds 2 = e sr 2 R 2 r 2 dt 2 + d x 2 + dr 2 + e −sr 2 g…”

“…Summary and discussion.-In this Letter, we have modeled the N -quark potential using the now standard ideas motivated by gauge-string duality. Our work based on the background geometry (1), which is singled out by the earlier works [11,20], provides the first convinc-…”

Aspects of quarkonium propagation in a thermal medium as seen by string models

“…(3) Because the results provided by the models are consistent with the lattice calculations and QCD phenomenology. In particular, this takes place for the equation of state [10], expectation value of the Polyakov loop [11], Debye screening mass [8], spatial string tension and heavy quark diffusion coefficients [12]. (4) Because analytic formulas can be obtained by solving these models.…”

“…Here there is an important issue that arises when one tries to split the correlator in two parts non-perturbatively. 10 We won't discuss it here, in part because in string models the octet channel is not understood even on the very basic level, and in part because for our purposes it is enough, as shown before for v = 0 [8], to use the singlet channel.…”