Holography at Work for Nuclear and Hadron Physics

Table 1

Meson spectroscopy from the hard-wall model and from its variations: Model I [60], Model II [43], Model A [23], and Model B [23]. The experimental data listed in the last column are taken from the particle data group [62]. All results are given in units of MeV except for the condensate and the ratio of two condensates.

	Model I	Model II	Model A	Model B	Experiment
𝑚𝜌	775.8^∗	775.8	775.8^∗	832	775.49±0.34
𝑚𝑎1	1348	1244	1363	1220	1230±40
𝑓𝜋	92.4^∗	80.5	92.4^∗	84.0	92.4±0.35
𝐹^𝜌1/2	334	330	329	353	345±8
𝐹^𝑎1/21	481	459	486	440	433±13
𝑚𝜋	139.6^∗	139.3	139.6^∗	141	139.57±0.00035
𝑔𝜌𝜋𝜋	4.46	4.87	4.48	5.29	6.03±0.07