Strings and QCD
نویسنده
چکیده
Motivation: Use string theory to study strong interaction physics. Motivation: Use string theory to study strong interaction physics.
منابع مشابه
ec 1 99 9 ITEP - TH - 75 / 99 SHORT STRINGS AND NEW PHYSICS PERSPECTIVES IN QCD 1
Within the (dual) Abelian Higgs model, confining strings do not disappear at small distances but rather become short strings. In compact 3D electrodynamics, as we argue here, the confining strings are also manifested at small distances in unusual power corrections, disobeying the standard rules of the Operator Product expansion. In the most interesting case of QCD, there is yet no derivation of...
متن کاملInstitute of Theoretical and Experimental Physics,
Below we describe effects produced by the recently introduced object, short string. Short strings [1] are responsible for non-standard power corrections in QCD, which are important in the ultraviolet region. On the other hand short strings exist due to confinement and in this sense they are induced by large distance physics. Short strings are not point-like objects and violate such fundamental ...
متن کاملQCD String as Vortex String in Seiberg-Dual Theory
We construct a classical vortex string solution in a Seiberg-dual theory of N = 1 supersymmetric SO(Nc) QCD which flows to a confining phase. We claim that this vortex string is a QCD string, as previouly argued by M. Strassler. In SO(Nc) QCD, it is known that stable QCD strings exist even in the presence of dynamical quarks. We show that our vortex strings are stable in the Seiberg-dual theory.
متن کاملAnomaly matching for the QCD string.
A criterion to be satisfied by a string theory of QCD is formulated in the ultraviolet regime. It arises from the trace anomaly of the QCD stress tensor computed using instantons. It is sensitive to asymptotic freedom. It appears to be related to the trace anomaly of the QCD string. Our current understanding of noncritical strings in physical dimensions is limited, but remarkably, a formal trea...
متن کاملThe Area Law in Matrix Models for Large N QCD Strings
We study the question whether matrix models obtained in the zero volume limit of 4d Yang-Mills theories can describe large N QCD strings. The matrix model we use is a variant of the Eguchi-Kawai model in terms of Hermitian matrices, but without any twists or quenching. This model was originally proposed as a toy model of the IIB matrix model. In contrast to common expectations, we do observe th...
متن کاملSolitons in Supersymmety Breaking Meta-Stable Vacua
In recently found supersymmetry-breaking meta-stable vacua of the supersymmetric QCD, we examine possible exsitence of solitons. Homotopy groups of the moduli space of the meta-stable vacua show that there is no nontrivial soliton for SU(Nc) gauge group. When U(1)B symmetry present in the theory is gauged, we find non-BPS solitonic (vortex) strings whose existence and properties are predicted f...
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تاریخ انتشار 2007