返回
Mesons in large-N QCD
DOI:10.1007/JHEP06(2013)071.png)
摘要
En 中文
We present the results of a systematic, first-principles study of the spectrum and decay constants of mesons for different numbers of color charges N, via lattice computations. We restrict our attention to states in the non-zero isospin sector, evaluating the masses associated with the ground-state and first excitation in the pseudoscalar, vector, scalar, and axial vector channels. Our results are based on a new set of simulations of four dimensional SU(N) Yang-Mills theories with the number of colors ranging from N = 2 to N = 17; the spectra and the decay constants are computed in the quenched approximation (which becomes exact in the 't Hooft limit) using Wilson fermions. After discussing the extrapolations to the chiral and large-N limits, we present a comparison of our results to some of the numerical computations and analytical predictions available in the literature - including, in particular, those from holographic computations.
Keyword:
Lattice QCD
AdS-CFT Correspondence
1/N Expansion
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
机构
引用论文
Cost-effectiveness of three strategies of managing tunnelled, cuffed haemodialysis catheters in clinically mild or asymptomatic bacteraemias在临床上轻度或无症状的菌血症中管理隧道式,袖带式血液透析导管的三种策略的成本效益
Untangling the relatedness among correlations, Part II: Inter-subject correlation group analysis through linear mixed-effects modeling
NeuroImage
IF0

