We find the parameters of the MSSM in terms of bulk supergravity fields for the D-brane model of Berenstein, Jejjala and Leigh (hep-ph/0105042). The model consists of a D3-brane at the singularity of a non-abelian orbifold ∆27, which gives the particles of the Supersymmetric Standard Model. We compute the action for the D-brane fields in the presence of both supersymmetric and supersymmetry bre...

Abstract We consider the problem of a leader who can assign rewards for citizens different anti-regime actions. Citizens face coordination in which each citizen has private, endogenous degree optimism about likelihood regime change. Because more optimistic are easier to motivate, choice optimal entails screening. This leads distribution A key result is emergence vanguard, consisting engage endo...

This article examines the impact that experience of 1905 Revolution had on political attitudes professional artists various creative persuasions and younger generation who were still attending art schools. It inevitably focuses a few representatives argues Realists as well more innovative like Valentin Serov World Art group became critical regime began to produce works satirizing Tsar his gover...