Factorization breaking of four-quark condensates in the Nambu-Jona-Lasinio model

被引：9

作者：

Braghin, Fabio L. ^{[1
]}

Navarra, Fernando S. ^{[2
]}

机构：

[1] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go, Brazil

[2] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 07期

基金：

巴西圣保罗研究基金会;

关键词：

QCD SUM-RULES; VACUUM;

D O I：

10.1103/PhysRevD.91.074008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the factorization hypothesis of the four-quark condensate [q (q) over barq (q) over bar] = A [q (q) over bar](2) by considering the Nambu-Jona-Lasinio model supplemented with sixth- and eighth-order interactions. For that purpose we use the bosonization method with multiple auxiliary variables. We find that in a simplified U(1) version of the model factorization holds, whereas in the full U(3)-flavor version of the model, factorization is broken by terms which are related to the 't Hooft interaction.

引用

页数：11

共 27 条

[1] Eighth order quark interaction with gluon condensate ⟨A2⟩ [J].

Barros, Ednaldo, Jr. ;

Braghin, Fabio L. .

PHYSICAL REVIEW D, 2013, 88 (03)

[2] gNKΛ and gNKΣ from QCD sum rules in the γ5σμν structure [J].

Bracco, ME ;

Navarra, FS ;

Nielsen, M .

PHYSICS LETTERS B, 1999, 454 (3-4) :346-352

[3] Quark mass and chiral condensate from the Wilson twisted mass lattice quark propagator [J].

Burger, Florian ;

Lubicz, Vittorio ;

Mueller-Preussker, Michael ;

Simula, Silvano ;

Urbach, Carsten .

PHYSICAL REVIEW D, 2013, 87 (03)

[4] Quark mass and chiral condensate from the Wilson twisted mass lattice quark propagator (vol 87, 034514, 2013) [J].

Burger, Florian ;

Lubicz, Vittorio ;

Mueller-Preussker, Michael ;

Simula, Silvano ;

Urbach, Carsten .

PHYSICAL REVIEW D, 2013, 87 (07)

[5]

Colangelo P, 2001, AT THE FRONTIER OF PARTICLE PHYSICS, VOLS 1-3, P1496

[6] The 't Hooft vertex revisited [J].

Creutz, Michael .

ANNALS OF PHYSICS, 2008, 323 (09) :2349-2365

[7] Nonfactorization of four-quark condensates at low energies within chiral perturbation theory [J].

Gomez Nicola, A. ;

Pelaez, J. R. ;

Ruiz de Elvira, J. .

PHYSICAL REVIEW D, 2010, 82 (07)

[8] THE NAMBU-JONA-LASINIO MODEL OF QUANTUM CHROMODYNAMICS [J].

KLEVANSKY, SP .

REVIEWS OF MODERN PHYSICS, 1992, 64 (03) :649-708

[9] Are Θ+ and the Roper resonance diquark-diquark-antiquark states? [J].

Matheus, RD ;

Navarra, FS ;

Nielsen, M ;

da Silva, RR ;

Lee, SH .

PHYSICS LETTERS B, 2004, 578 (3-4) :323-329

[10] Direct determination of the strange and light quark condensates from full lattice QCD [J].

McNeile, C. ;

Bazavov, A. ;

Davies, C. T. H. ;

Dowdall, R. J. ;

Hornbostel, K. ;

Lepage, G. P. ;

Trottier, H. D. .

PHYSICAL REVIEW D, 2013, 87 (03)

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