The Regge limit for Green functions in conformal field theory

被引:8
|
作者
Banks, T. [1 ,2 ,3 ,4 ]
Festuccia, G. [1 ,2 ]
机构
[1] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA
[2] Univ Calif Santa Cruz, SCIPP, Santa Cruz, CA 95064 USA
[3] Rutgers State Univ, Dept Phys, Piscataway, NJ 08540 USA
[4] Rutgers State Univ, NHETC, Piscataway, NJ 08540 USA
来源
关键词
Conformal and W Symmetry; QCD; Gauge-gravity correspondence; POLE BEHAVIOR; PARTIAL-WAVES; MODEL; SLOPE;
D O I
10.1007/JHEP06(2010)105
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We define a Regge limit for off-shell Green functions in quantum field theory, and study it in the particular case of conformal field theories (CFT). Our limit differs from that defined in [32-35], the latter being only a particular corner of the Regge regime. By studying the limit for free CFTs, we are able to reproduce the Low-Nussinov [39, 40], BFKL [24-26] approach to the pomeron at weak coupling. The dominance of Feynman graphs where only two high momentum lines are exchanged in the t-channel, follows simply from the free field analysis. We can then define the BFKL kernel in terms of the two point function of a simple light-like bilocal operator. We also include a brief discussion of the gravity dual predictions for the Regge limit at strong coupling.
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页数:23
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