Atom-optics hologram in the time domain

The temporal evolution of an atomic wave packet interacting with object and reference electromagnetic waves is investigated beyond the weak perturbation of the initial state. It is shown that the diffraction of an ultracold atomic beam by the inhomogeneous laser field can be interpreted as if the beam passes through a three-dimensional hologram, whose thickness is proportional to the interaction time. It is found that the diffraction efficiency of such a hologram may reach 100% and is determined by the duration of laser pulses. On this basis a method for reconstruction of the object image with matter waves is offered.Comment: RevTeX, 13 pages, 8 figures; minor grammatical change

Identifying and overcoming barriers to healthier lives

Understanding the key determinants of health from a community perspective is essential to address and improve the health and wellbeing of its members. This qualitative study aimed to explore and better understand New Zealand-based Pasifika communities’ sociocultural experiences and knowledge of health and wellbeing. Fifty-seven participants were involved in six separate focus groups. Community coordinators co-facilitated and transcribed the discussions and conducted thematic analysis. The findings suggested two overarching themes: (1) ‘Pasifika experiences on poor health and wellbeing’: were based on sub-themes: (i) ‘recognisable issues’ (e.g., poor diet and lifestyle behaviours); (ii) ‘systemic issues’ that support the perpetual health issues (e.g., lack of knowledge and education) and; (iii) ‘profound issues’ that are often unspoken of and create long-term barriers (e.g., cultural lifestyle and responsibilities). (2) ‘Hopes and dreams’ to improve health and well-being requires: (i) a family-centric approach to health; (ii) tackling systemic barriers; and (iii) addressing community social justice issues. This study provides deepened insights on Pasifika communities’ understanding healthier living in the context of their cultural environment and family responsibilities. If we are to develop effective, sustainable programmes that prioritises health and well-being based on the needs of Pasifika communities, the findings from this study highlight their needs as step forward in overcoming barriers to healthier lives.fals