期刊
EUROPEAN PHYSICAL JOURNAL A
卷 35, 期 1, 页码 81-133出版社
SPRINGER
DOI: 10.1140/epja/i2007-10540-1
关键词
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We review recent progress in studying mesons within gauge/gravity duality, in the context of adding flavour degrees of freedom to generalizations of the AdS/CFT correspondence. Our main focus is on the top-down approach of considering models constructed within string theory. We explain the string-theoretical constructions in detail, aiming at non-specialists. These give rise to a new way of describing strongly coupled confining large-N gauge theories similar to large-N QCD. In particular, we consider gravity dual descriptions of spontaneous chiral symmetry breaking, and compare with lattice results. A further topic covered is the behaviour of flavour bound states in finite-temperature field theories dual to a gravity background involving a black hole. We also describe the bottom up phenomenological approach to mesons within AdS/QCD. Some previously unpublished results are also included.
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