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math-ph1999
Deconstructing Monopoles and Instantons
Giovanni Landi
We give a unifying description of the Dirac monopole on the 2-sphere , of a graded monopole on a (2,2)-supersphere and of the BPST instanton on the 4-sphere , b…
math-ph1998
Projective Systems of Noncommutative Lattices as a Pregeometric Substratum
Giovanni Landi, Fedele Lizzi
We present an approximation to topological spaces by {\it noncommutative} lattices. This approximation has a deep physical flavour based on the impossibility to fully localize part…