Predictions for Orientifold Field Theories from Type 0’ String Theory
نویسنده
چکیده
Two predictions about finite-N non-supersymmetric “orientifold field theories” are made by using the dual type 0’ string theory on C /Z2 × Z2 orbifold singularity. First, the mass ratio between the lowest pseudoscalar and scalar color-singlets is estimated to be equal to the ratio between the axial anomaly and the scale anomaly at strong coupling, M−/M+ ∼ C−/C+. Second, the ratio between the domain wall tension and the value of the quark condensate is computed.
منابع مشابه
Non-Perturbative Planar Equivalence and the Absence of Closed String Tachyons
We consider ’orbifold’ and ’orientifold’ field theories from the dual closed string theory side. We argue that a necessary condition for planar equivalence to hold is the absence of a closed string tachyonic mode in the dual non-supersymmetric string. We analyze several gauge theories on R × S. In the specific case of U(N) theories with symmetric/anti-symmetric fermions (’orientifold field theo...
متن کاملFrom Super-yang–mills Theory to Qcd: Planar Equivalence and Its Implications
We review and extend our recent work on the planar (large N) equivalence between gauge theories with varying degrees of supersymmetry. The main emphasis is on the planar equivalence between N =1 gluodynamics (super-Yang–Mills theory) and a nonsupersymmetric “orientifold field theory”. We outline an “orientifold” large N expansion, analyze its possible phenomenological consequences in one-flavor...
متن کامل8 , 0 ) Quantum mechanics and symmetry enhancement in type I ’ superstrings
The low-energy supersymmetric quantum mechanics describing D-particles in the background of D8-branes and orientifold planes is analyzed in detail, including a careful discussion of Gauss’ law and normal ordering of operators. This elucidates the mechanism that binds Dparticles to an orientifold plane, in accordance with the predictions of heterotic/type I duality. The ocurrence of enhanced sym...
متن کاملGauge Theories from Orientifolds and Large N Limit
Extending the recent work in [1], we consider string perturbative expansion in the presence of D-branes and orientifold planes imbedded in orbifolded space-time. In the α → 0 limit the weak coupling string perturbative expansion maps to ‘t Hooft’s large N expansion. We focus on four dimensional N = 1, 2, 4 supersymmetric theories, and also discuss possible extensions to N = 0 cases. Utilizing t...
متن کاملNon-Supersymmetric Gauge Theories from D-Branes in Type 0 String Theory
Abstract We construct non-supersymmetric four dimensional gauge theories arising as effective theories of D-branes placed on various singularities in Type 0B string theory. We mostly focus on models which are conformal in the large N limit and present both examples appearing on self-dual D3-branes on orbifold singularities and examples including orientifold planes. Moreover, we derive type 0 Ha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005