Renormalization Group Flow in the Cutoff Yukawa Model and a Scale Invariance in the Nambu-Jona-Lasinio Model

We investigate the renormalization group flow of the Yukawa model with a fixed momentum cutoff at the leading order in 1/N, where N is the number of the fermion species. We demonstrate the scale invariance of coupling constants of the Nambu-Jona-Lasinio model.Comment: 11 pages, 4 figure

Exact Scale Invariance of Composite-Field Coupling Constants

We show that the coupling constant of a quantum-induced composite field is scale invariant due to its compositeness condition. It is first demonstrated in next-to-leading order in 1/N in typical models, and then we argue that it holds exactly.Comment: 4 page

Induced gravity and gauge interactions revisited

It has been shown that the primary, old-fashioned idea of Sakharov's induced gravity and gauge interactions, in the "one-loop dominance" version, works astonishingly well yielding phenomenologically reasonable results. As a byproduct, the issue of the role of the UV cutoff in the context of the induced gravity has been reexamined (an idea of self-cutoff induced gravity). As an additional check, the black hole entropy has been used in the place of the action. Finally, it has been explicitly shown that the induced coupling constants of gauge interactions of the standard model assume qualitatively realistic values.Comment: 15 pages, 2 figures (including 1 table); improved version - fina

Politics makes strange bedfellows: addressing the ‘messy’ power dynamics in design practice

The paper addresses the role of the designer in navigating through politics and power dynamics that can potentially hinder ways in which people have input into a design process. It acknowledges that such obstacles are common to design practices and much is already documented in organisational, business and management frameworks (Best, 2006, p. 97; Jones, 2003). However, the paper draws on the author’s doctoral research that explored how designers work within the complexities of politics and power dynamics and the agency they bring when working within such contexts. Firstly, the paper clarifies its use of the word politics by distinguishing between the Political choices that designers make, to the embedded politics of power dynamics and hidden agendas. It acknowledges how the Political content and intention of design is widely discussed in communication design literature where designers have created political content toward a purposeful political outcome. The paper therefore focuses more on another political aspect to communication design practice that relates to values, relationships and power dynamics. These human aspects of practice are complex, ‘messy’ and are often implicit. The power dynamics within projects can significantly influence the way stakeholders have input into the design process and subsequent project outcome. The politics of the individual, organisation, community or the society can often abruptly and unexpectedly surface through designing. Based on several interviews with a variety of communication design practitioners and project case studies from the author’s research, the paper highlights a role that designers can potentially play in addressing the ‘messy’ politics that can manifest through design projects. The research explored various design interventions to enable a variety of people with different values, opinions and viewpoints within a design project to collectively negotiate them through dialogue. It has discovered that such design interventions can be instrumental in facilitating the dialogic process amongst stakeholders to illuminate differences in values or hidden agendas. The paper proposes that the role of the designer, then, is to facilitate this dialogic process through design interventions to enrich the experience of dialogue and exchange amongst project stakeholders. Keywords: Human-Centred Design; Communication Design; Politics; Power-Dynamics; Design ‘Scaffolds’; Dialogue.</p