Mesons from global anti-de Sitter space

Erdmenger, Johanna and Filev, Veselin G. (2010) Mesons from global anti-de Sitter space. Journal of High Energy Physics, 2011 (1). ISSN 1029-8479

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Abstract

In the context of gauge/gravity duality, we study both probe D7– and probe D5–branes in global Anti-de Sitter space. The dual field theory is N = 4 theory on R × S^3 with added flavour. The branes undergo a geometrical phase transition in this geometry as function of the bare quark mass m_q in units of 1/R with R the S^3 radius. The meson spectra are obtained from fluctuations of the brane probes. First, we study them numerically for finite quark mass through the phase transition. Moreover, at zero quark mass we calculate the meson spectra analytically both in supergravity and in free field theory on R × S^3 and find that the results match: For the chiral primaries, the lowest level is given by the zero point energy or by the scaling dimension of the operator corresponding to the fluctuations, respectively. The higher levels are equidistant. Similar results apply to the descendents. Our results confirm the physical interpretation that the mesons cannot pair-produce any further when their zero-point energy exceeds their binding energy.

Item Type:	Article
Uncontrolled Keywords:	AdS/CFT correspondence, Gauge/gravity correspondence
Divisions:	School of Theoretical Physics > Preprints
Date Deposited:	05 Oct 2017 19:25
Last Modified:	18 Dec 2022 08:35
URI:	https://dair.dias.ie/id/eprint/264

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