Tensions and Luscher Terms for (2+1)-dimensional k-strings from Holographic Models

Details Tensions and Luscher Terms for (2+1)-dimensional k-strings from Holographic Models Tensions and Luscher Terms for (2+1)-dimensional k-strings from Holographic Models

2009-07-08

arxiv.org/abs/0907.1331v3

JHEP 0911:064,2009

Physics

High Energy Physics

High Energy Physics - Theory

39 pages, reference added, same version to be published in JHEP

Scientific paper

10.1088/1126-6708/2009/11/064

The leading term for the energy of a bound state of k-quarks and k-antiquarks is proportional to its separation L. These k-string configurations have a Luscher term associated with their quantum fluctuations which is typically a 1/L correction to the energy. We review the status of tensions and Luscher terms in the context of lattice gauge theory, Hamiltonian methods, and gauge/gravity correspondence. Furthermore we explore how different representations of the k-string manifest themselves in the gauge/gravity duality. We calculate the Luscher term for a strongly coupled SU(N) gauge theory in (2+1) dimensions using the gauge/gravity correspondence. Namely, we compute one-loop corrections to a probe D4-brane embedded in the Cvetic, Gibbons, Lu, and Pope supergravity background. We investigate quantum fluctuations of both the bosonic and the fermionic sectors.

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