2008 NOV 24 - (VerticalNews.com) -- According to a study from Trieste, Italy, "Supersymmetric gauge theories have an important but perhaps under-appreciated notion of a master space, which controls the full moduli space. For world-volume theories of D-branes probing a Calabi-Yau singularity chi the situation is particularly illustrative."

  "In the case of one physical brane, the master space F-b is the space of F-terms and a particular quotient thereof is chi itself. We study various properties of F-b which encode such physical quantities as Higgsing, BPS spectra, hidden global symmetries, etc," wrote D. Forcella and colleagues ...read more

  2008 NOV 24 - (VerticalNews.com) -- According to a study from Como, Italy, "A main issue in superstring theory are the superstring measures. D'Hoker and Phong showed that for genus two these reduce to measures on the moduli space of curves which are the product of modular forms of weight eight and the bosonic measure."

  "They also suggested a generalisation to higher genus. We showed that their approach works, with a minor modification, in genus three and we announced a positive result also in genus four," wrote S.L. Cacciatori and colleagues, University of Insubria ...read more

  2008 NOV 24 - (VerticalNews.com) -- According to a study from Egham, the United Kingdom, "We study quantum information inequalities and show that the basic inequality between the quantum variance and the metric adjusted skew information generates all the multi-operator matrix inequalities or Robertson type determinant inequalities studied by a number of authors."

  "We introduce an order relation on the set of functions representing quantum Fisher information that renders the set into a lattice with an involution. This order structure generates new inequalities for the metric adjusted skew informations," wrote K. Audenaert and colleagues, University of London ...read more