منابع مشابه
D-instantons and twistors: some exact results
We present some results on instanton corrections to the hypermultiplet moduli space in Calabi-Yau compactifications of Type II string theories. Previously, using twistor methods, only a class of D-instantons (D2-instantons wrapping A-cycles) was incorporated exactly and the rest was treated only linearly. We go beyond the linear approximation and give a set of holomorphic functions which, throu...
متن کاملExact String-theory Instantons by Dimensional Reduction
We identify exact gauge-instanton-like solutions to (super)-string theory using the method of dimensional reduction. We find in particular the Polyakov instanton of 3d QED, and a class of generalized Yang-Mills merons. We discuss their marginal deformations, and show that for the 3d instanton they correspond to a dissociation of vectorand axialmagnetic charges. CERN-TH.7100/93 CPTh-A276.11.93 N...
متن کاملU(n) Instantons on N = Superspace – Exact Solution & Geometry of Moduli Space *
We construct the exact solution of one (anti)instanton in N = 1 2 super Yang-Mills theory defined on non(anti)commutative superspace. We first identify N = 1 2 superconformal invariance as maximal spacetime symmetry. For gauge group U(2), the SU(2) part of the solution is given by the standard (anti)instanton, but the U(1) field strength also turns out nonzero. The solution is SO(4) rotationall...
متن کاملALE spaces from noncommutative U(1) instantons via exact Seiberg-Witten map
The exact Seiberg-Witten (SW) map of a noncommutative (NC) gauge theory gives the commutative equivalent as an ordinary gauge theory coupled to a field dependent effective metric. We study instanton solutions of this commutative equivalent whose self-duality equation turns out to be the exact SW map of NC instantons. We derive general differential equations governing U(1) instantons and we expl...
متن کاملU ( N ) Instantons on N = 1 2 Superspace – exact solution & geometry of moduli space ∗
We construct the exact solution of one (anti)instanton in N = 1 2 super Yang-Mills theory defined on non(anti)commutative superspace. We first identify N = 1 2 superconformal invariance as maximal spacetime symmetry. For gauge group U(2), the SU(2) part of the solution is given by the standard (anti)instanton, but the U(1) field strength also turns out nonzero. The solution is SO(4) rotationall...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Modern Physics D
سال: 2012
ISSN: 0218-2718,1793-6594
DOI: 10.1142/s021827181250040x