Lump-like Structures in Scalar-field Models

In this work we investigate the presence of lump-like solutions in models described by a single real scalar field. We take advantage of a procedure recently used to describe explicit analytical solutions and we study several distinct models, showing how the parameters can be used to control the specific features of the lump-like structures. The proposed models are of direct interest to the construction of q-balls, to induce tachyonic excitations and gravitating structures of nontopological profile on braneworld models with a single extra dimension, to map solitons in optical fibers, and to describe collective excitations in Bose-Einstein condensates.Comment: 7 pages, 11 figure

Fashion and digital culture

[Abstract] How fashion has been working and annoucing the paradigmes of the digital culture? Among many elements, we may stress a few ones which determine digital culture such as: fluidity, hybrid body and its manipulation, internationalization of diferences in real time, datas in digital formate making sampling a common dinamic, frontiers surpassed in cases of gender, culture and social relation, constant negotiation (in-betweeness), biotechnology, and genetic manipulation. Digital technologies have been playing an important role in silhouette when proposes overcoming the idea of rigid frontiers. In this sense, we can understand the importance os belgians and japanese fashion designers since the 1980’s. These designers have broken strict beliefes of gender, binomy beauty-uglyness, original-copy and, human being-being in determinist culture. As Derrick de Kerchkove says, once we have everything in digital datas, all of it can be sampled, breaking the idea of begging-middleend. The fashion designers, Rei Kawakubo, Yohji Yamamoto, Issey Miyake, Hussein Chalayan, Sarah Pacini, Sandra Backlund, Martin Margiela and Walter van Beirendonck, have been annoucing dinamics and silhouttes in this sense. They have subverted the logic of structure (patterns), as well as gender of biologic bodies. Which one is original, which one is copy? (if there is a determinist answer). And also, they have been proposing hybrid figures which remind us the idea of the hybrid being which overcome the idea of the human figure, as some of his creation were manipulated in labs. The main subjects here about fashion will discuss new ways of understanding world wide relations which are no longer rigid ‘laws’ because of the volatile dinamics of market and socio-cultural shifts, but a constant negotiation. The hybrid body integrates the organic and the inorganic by means of biotechnological processes, redesigning our bodies, fashion designer and cientists getting closer, turning the limits between man and machine imprecise