Spectrum of orientifold QCD in the strong coupling and hopping expansion approximation

被引：4

作者：

Moraitis, Gregory ^{[1
]}

机构：

[1] Swansea Univ, Dept Phys, Swansea SA2 8PP, W Glam, Wales

来源：

PHYSICS LETTERS B | 2010年 / 690卷 / 01期

关键词：

Lattice gauge theory; Orientifold planar equivalence; Meson spectrum; Strong coupling expansion;

D O I：

10.1016/j.physletb.2010.05.007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use the strong coupling and hopping parameter expansions to calculate the pion and rho meson masses for lattice Yang-Mills gauge theories with fermions in irreducible two-index representations, namely the adjoint, symmetric and antisymmetric. The results are found to be consistent with orientifold planar equivalence, and leading order 1/N-c corrections are calculated in the lattice phase. An estimate of the critical bare mass, for which the pion is massless, is obtained as a function of the bare coupling. A comparison to data from the two-flavour SU(2) theory with adjoint fermions gives evidence for a bulk phase transition at is beta(c) similar to 2, separating a pure lattice phase from a phase smoothly connected to the continuum. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：96 / 101

页数：6

共 30 条

[1] Refining the proof of planar equivalence [J].

Armoni, A ;

Shifman, M ;

Veneziano, G .

PHYSICAL REVIEW D, 2005, 71 (04) :045015-1

[2] Supersymmetry relics in one-flavor QCD from a new 1/N expansion -: art. no. 191601 [J].

Armoni, A ;

Shifman, M ;

Veneziano, G .

PHYSICAL REVIEW LETTERS, 2003, 91 (19)

[3] QCD quark condensate from SUSY and the orientifold large-N expansion [J].

Armoni, A ;

Shifman, M ;

Veneziano, G .

PHYSICS LETTERS B, 2004, 579 (3-4) :384-390

[4] Exact results in non-supersymmetric large N orientifold field theories [J].

Armoni, A ;

Shifman, M ;

Veneziano, G .

NUCLEAR PHYSICS B, 2003, 667 (1-2) :170-182

[5]

ARMONI A, ARXIVHEPTH0403071

[6] A note on C-parity conservation and the validity of orientifold planar equivalence [J].

Armoni, Adi ;

Shifman, Mikhail ;

Veneziano, Gabriele .

PHYSICS LETTERS B, 2007, 647 (5-6) :515-518

[7] Lattice study of planar equivalence: The quark condensate [J].

Armoni, Adi ;

Lucini, Biagio ;

Patella, Agostino ;

Pica, Claudio .

PHYSICAL REVIEW D, 2008, 78 (04)

[8]

BURSA F, ARXIV09104535

[9]

Catterall S., ARXIV09104387HEPLAT

[10] Minimal walking on the lattice [J].

Catterall, Simon ;

Sannino, Francesco .

PHYSICAL REVIEW D, 2007, 76 (03)

← 1 2 3 →