We show how to systematically construct higher-derivative terms in effective actions in harmonic superspace despite the infinite redundancy in their description due to the infinite number of… (More)

Orientifold compactifications of the type IIB superstring circumvent the problem that the type I theory does not produce a chiral spectrum when compactified on a Calabi-Yau threefold with standard… (More)

Harmonic superspace can be used to construct higher derivative terms in N = 2 supersymmetric effective actions despite the infinite redundancy in their description due to the infinite number of… (More)

We search for superspace Chern-Simons-like higher-derivative terms in the low energy effective actions of supersymmetric theories in four dimensions. Superspace ChernSimons-like terms are those… (More)

The excitation of low frequency plasma waves in an expanding anisotropic cosmological model which contains a magnetic field frozen into the matter and pointing in the longitudinal direction is… (More)

The finite temperature effective potential in the 2+1 dimensional Nambu-Jona-Lasinio model is constructed up to the next to leading order in the large N expansion, where N is the number of flavors in… (More)

We formulate the Josephson effect in a field theoretic language which affords a straightforward generalization to the non-Abelian case. Our formalism interprets Josephson tunneling as the excitation… (More)

The excitation of low frequency plasma waves in an expanding anisotropic cosmological model which contains a magnetic field frozen into the matter and pointing in the longitudinal direction is… (More)

In order to account for the possible impact of the EU’s promotion of its policies relating to SALW non-proliferation in international forums, this first chapter will try to grasp the nature and… (More)

In this article we use a partial integral-di erential approach to construct and extend a non-linear lter to include jump components in the system state. We employ the enhanced lter to estimate the… (More)