A light scalar from walking solutions in gauge-string duality
A light scalar from walking solutions in gauge-string duality
复制标题
规范弦二元性中行走解的光标量
DOI:
10.1016/j.physletb.2010.02.023
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发表时间:
2010
影响因子:
4.4
通讯作者:
Elander D
中科院分区:
文献类型:
--
作者:
Elander D
We consider the type-IIB background generated by the strong-coupling limit of NcD5 branes wrapped on S2, and focus our attention on a special class of solutions that exhibit walking behavior. We compute numerically the spectrum of scalar fluctuations around vacua of this class. Besides two cuts, and sequences of single poles converging on one of the branch points, the spectrum contains one isolated scalar, the mass of which is suppressed by the length of the walking region. Approximate scale-invariance symmetry in the walking region suggests that this might be interpreted as a light dilaton, the pseudo-Goldstone boson of dilatations.
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DOI:
--
发表时间:
2002
期刊:
影响因子:
--
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--
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