期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP05(2013)141
关键词
Bosonic Strings; Conformal and W Symmetry; Gauge-gravity correspondence
资金
- Scottish University Physics Alliance
- Edinburgh Partnership in Engineering and Mathematics
- Engineering and Physical Sciences Research Council (EPSRC)
- Science and Technology Facilities Council [ST/J000329/1, ST/G000522/1] Funding Source: researchfish
- STFC [ST/J000329/1, ST/G000522/1] Funding Source: UKRI
We discuss an intriguing link between the symmetries of the tensionless limit of closed string theory and the 2-dimensional Galilean Conformal Algebra (2d GCA). 2d GCA has been studied in the context of the non-relativistic limit of AdS/CFT and more recently in flat-space holography as the proposed symmetry algebra of the field theory dual to 3d Minkowski spacetimes. It is best understood as a contraction of two copies of the Virasoro algebra. In this note, we link this to the tensionless limit of bosonic closed string theory showing how it emerges naturally as a contraction of the residual gauge symmetries of the tensile string in the conformal gauge. We also discuss a possible dual interpretation in terms of a point-particle like limit. We show that this different contraction, motivated by an exchange of world-sheet space and time co-ordinates, leads to the same symmetry algebra and provide further evidence in support of our claim by looking at the theory on a torus.
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