Exact results for static and radiative fields of a quark in N=4 super Yang-Mills
| Autor: | Bartomeu Fiol, Blai Garolera, Aitor Lewkowycz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Quark
Physics High Energy Physics - Theory Nuclear and High Energy Physics FOS: Physical sciences Observable Yang–Mills existence and mass gap Expectation value Operator (computer programming) High Energy Physics - Theory (hep-th) Radiative transfer Fundamental representation Preprint Mathematical physics |
| Popis: | In this work (which supersedes our previous preprint arXiv:1112.2345) we determine the expectation value of the N=4$ SU(N) SYM Lagrangian density operator in the presence of an infinitely heavy static particle in the symmetric representation of SU(N), by means of a D3-brane probe computation. The result that we obtain coincides with two previous computations of different observables, up to kinematical factors. We argue that these agreements go beyond the D-brane probe approximation, which leads us to propose an exact formula for the expectation value of various operators. In particular, we provide an expression for the total energy loss by radiation of a heavy particle in the fundamental representation. 14 pages. This submission supersedes our previous preprint arXiv:1112.2345. v2: numerical factors fixed, minor clarifications, added references |
| Databáze: | OpenAIRE |
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