6 papers
Symmetry Structure of ADHM Sigma Models and Superstrings
Abbas Ali, Mohsin Ilahi, P. P. Abdul Salih +1
We clarify the supersymmetry structure of ADHM instanton linear sigma models, superconformal algebras and superconformal field theories dual to superstrings moving in …
Off-shell Formalism for Ali-Ilahi's ADHM Instanton Sigma Model
Abbas Ali, Mohsin Ilahi, P. P. Abdul Salih +1
In this brief note we present the off-shell superspace formalism for Ali-Ilahi's supersymmetric ADHM instanton linear sigma model in harmonic superspace. Ali-Ilahi's model…
Symmetry of Superstrings
Abbas Ali, Mohsin Ilahi
We discuss the importance of symmetry of large superconformal algebra for finding its free field realization that is more complete than the most commonly used one, that…
Quantization of Complementary ADHM Sigma Model
Abbas Ali, Mohsin Ilahi, Shafeeq Rahman Thottoli
We discuss quantization of complementary ADHM sigma model in parallel with the quantization of the Witten's original ADHM sigma model by Lambert. The mechanisms of divergence cance…
Complementary ADHM Instanton Sigma Model
Abbas Ali, Mohsin Ilahi
We construct the ADHM linear sigma model that is complementary to a model constructed by Edward Witten in 1995. Analysis of the corresponding moduli space leads to the resolution o…
Harmonic Superspace for Ali-Ilahi's ADHM Instanton Sigma Model
Abbas Ali, Mohsin Ilahi, P. P. Abdul Salih +1
ADHM Yang-Mills instantons are extended field theoretical objects. These are more general than the more familiar 't Hooft Yang-Mills instantons. Their counter parts exist in string…