Collisionless collective modes of fermions in magnetic traps

We present a Random-Phase-Approximation formalism for the collective spectrum of two hyperfine species of dilute 40K atoms, magnetically trapped at zero temperature and subjected to a repulsive s-wave interaction between atoms with different spin projections. We examine the density-like and the spin-like oscillation spectra, as well as the transition density profiles created by external multipolar fields. The zero sound spectrum is always fragmented and the density and spin channels become clearly distinguishable if the trapping potentials acting on the species are identical. Although this distinction is lost when these confining fields are different, at selected excitation frequencies the transition densities may display the signature of the channel.Comment: 10 pages, 9 figure

Relational, interactive service innovation : Building branding competence

Original article can be found at: http://mtq.sagepub.com/ Copyright Sage [Full text of this article is not available in the UHRA]In this paper we discuss how to develop service innovation through building branding competence. We demonstrate that using relationships in a process of sharing adds value to the service innovation process. We draw upon two distinct perspectives in the literature. We agree that value in new service development comes from incorporating the consumer. Yet we also deduce that it is the firm's core competencies that provide optimal resources for innovation. We then conceptualize how these two perspectives on service innovation can be integrated around relationships incorporating the 'customer resource'. This process is relational, interactive service innovation. The conceptual framework we have developed offers a different approach for companies to view the new service development process in general and the building of branding competence in particular. We suggest that organizations may be able to improve their new service development process by emphasizing the internal and external linkages within the management of innovation.Peer reviewe