A bstract The special galileon and Dirac-Born-Infeld (DBI) theories are effective field of a single scalar that have many interesting properties in flat space. These can be extended to all maximally symmetric spaces, where their algebras shift symmetries simple. We study aspects the curved space versions these theories: for galileon, we find new compact expression its Lagrangian de Sitter redef...

We discuss the quantization of a particle near an extreme Reissner-Nordström black hole in the canonical formalism. This model appears to be described by a Hamiltonian with no well-defined ground state. This problem can be circumvented by a redefinition of the Hamiltonian due to de Alfaro, Fubini and Furlan (DFF). We show that the Hamiltonian with no ground state corresponds to a gauge in which...

Concordance is based on the idea that patients and practitioners should work together towards an agreement on treatment choice. This requires a redefinition of the relations and encounters between doctors and their patients. This redefinition emphasizes the need for patient involvement and participation. In this article we examine concordance against the background of wider social change, struc...

Abstract This paper explores and illustrates the diverse manifestations of phenomenon ‘humanitarian alibi’, drawing upon historical contemporary cases violent conflict in order to identify substitutionary phenomena by governments international actors. It affirms existence substitution process where humanitarian aid intervention substitutes for prevention resolution protection civilian populatio...