Information-Entropic for Travelling Solitons in Lorentz and CPT Breaking Systems

In this work we group three research topics apparently disconnected, namely solitons, Lorentz symmetry breaking and entropy. Following a recent work [Phys. Lett. B 713 (2012) 304], we show that it is possible to construct in the context of travelling wave solutions a configurational entropy measure in functional space, from the field configurations. Thus, we investigate the existence and properties of travelling solitons in Lorentz and CPT breaking scenarios for a class of models with two interacting scalar fields. Here, we obtain a complete set of exact solutions for the model studied which display both double and single-kink configurations. In fact, such models are very important in applications that include Bloch branes, Skyrmions, Yang-Mills, Q-balls, oscillons and various superstring-motivated theories. We find that the so-called Configurational Entropy (CE) for travelling solitons, which we name as travelling Configurational Entropy (TCE), shows that the best value of parameter responsible to break the Lorentz symmetry is one where the energy density is distributed equally around the origin. In this way, the information-theoretical measure of travelling solitons in Lorentz symmetry violation scenarios opens a new window to probe situations where the parameters responsible for breaking the symmetries are random. In this case, the TCE selects the best value

D-Oscillons in the Standard Model-Extension

In this work we investigate the consequences of the Lorentz symmetry violation on extremely long-living, time-dependent, and spatially localized field configurations, named oscillons. This is accomplished in ($D+1$) dimensions for two interacting scalar field theories in the so-called Standard Model-Extension context. We show that $D$-dimensional scalar field lumps can present a typical size $R_{\min }\ll R_{KK}$, where $R_{KK}$ is the associated length scale of extra dimensions in Kaluza-Klein theories. Here, the size $R_{\min }$ is shown to strongly depend on the terms that control the Lorentz violation of the theory. This implies either contraction or dilation of the average radius $R_{\min}$, and a new rule for its composition, likewise. Moreover, we show that the spatial dimensions for existence of oscillating lumps have an upper limit, opening new possibilities to probe the existence of a $D$ -dimensional oscillons at TeV energy scale. Moreover, in a cosmological scenario with Lorentz symmetry breaking, we argue that in the early Universe with an extremely high energy density and a strong Lorentz violation, the typical size $R_{\min }$ was highly dilated. With the expansion and subsequent cooling of the Universe, we propose that it passed through a phase transition towards a Lorentz symmetry, wherein $R_{\min }$ tends to be compact.Comment: 8 pages, final version to appear in PR

Two new bivalves from the permian "Eurydesma fauna" of eastern Argentina

Vacunella camachoi sp. nov. and Deltopecten harringtoni sp. nov. are described from the Eurydesma fauna, Bonete Formation (Pillahuinco Group), in the Sierras Australes of the Buenos Aires Province, Argentina. A reassesment of the taxonomy, provincial affinities and age of the fauna reinforces its Gondwana character and indicates its probable correlation with early Permian faunas of Australia

Yield stability of soybean lines using addtive main effects and multiplicative interaction analysis - AMMI.

The grain yield of 27 soybean lines was evaluated at three locations (Anhembi, Areão and Esalq) in Piracicaba, State of São Paulo, Brazil, during four crop years to study the effect of environment (E) on the adaptability and stability of the lines (G) using additive main effects and multiplicative interaction analysis (AMMI). Effects of the G, E, and GE interaction were found to be significant and accounted for 51, 12, and 36% of the variation, respectively. The first and only significant interaction principal component axis (IPCA1) accounted for 26% of the sum of squares due to original GE interaction. This concentrated the largest proportion of the pattern of GE interaction. Environments associated with Anhembi and Esalq proved more favorable, while Areão contributed negatively to the grain yield. However, Anhembi and Areão were more predictable for the crop years. USP 93-5082 and USP 93-5243 lines combined high adaptability and stability

Magnitude da interação genótipos X ambientes para o caráter teor de óleo em linhagens de soja.

RESUMO: Com o objetivo de se estimar a interação genótipos x ambientes sobre o teor de óleo, avaliaram-se 28 linhagens de soja em três locais do município de Piracicaba (Anhembi, Areão e ESALQ), SP, com altitude de 540 m, 22 o 45' de latitude sul e 47 o 38' de longitude oeste, nos anos agrícolas de 1996/97, 1997/98, 1998/99 e 1999/00, totalizando 12 ambientes. O delineamento experimental utilizado foi o de blocos completos casualisados com duas repetições, estratificadas em conjuntos experimentais com quatro testemunhas comuns. A parcela experimental correspondeu a quatro fileiras de 5,0 x 0,5 m, avaliando-se os 4 m centrais das duas fileiras intermediárias de cada parcela. Pelos resultados obtidos pode-se evidenciar significância para os efeitos de genótipos, ambientes e interação genótipos x ambientes. A interação locais x anos contribuiu mais que os efeitos isolados de locais e anos para a variação ambiental, enquanto a interação genótipos x anos foi responsável pela maior parte da interação genótipos x ambientes. Destacaram-se as linhagens USPs 93-1188, 93-1024, 93-1042, 93-1043, 93-1044, 93-1012, 94-1195 e 94-1203, com teores de óleo acima de 22%. Na seleção de linhagens para estabilidade e adaptabilidade do teor de óleo no município de Piracicaba, SP, deve-se considerar os testes realizados em mais de um ano, com o propósito de amenizar os efeitos da interação genótipos x ambientes e obter maior garantia na recomendação de cultivares. Termos para indexação: comportamento genotípico, Glycine max, resposta ambiental, variação fenotípica. ABSTRACT: With the objective of estimating the magnitude of the genotype x environment interaction on the oil content, twenty eight soybean lines were evaluated in three location (Anhembi, Areão and Esalq) of Piracicaba, state of São Paulo, Brazil, at 540 m of altitude, 22 o 45' South latitude, and 47 o 38' West longitude, during the agricultural years of 1996/ 97, 1997/98, 1998/99 and 1999/00, totalizing 12 environments. A randomized complete block experiment was designed, with two replications stratified in experimental sets with four common checks. The experimental plot corresponded to four rows 5,0 x 0,5 m, where the four central meters of the two intermediate rows were evaluated. The results evidenced that significative effects were detected for genotypes, environments and genotype x environment interaction. The locations x years interaction contributed more than the effects isolated of locations and years for the environmental variation, while the genotypes x years was responsible for most of the genotype x environment interaction. USP 93-1188, 93-1024, 93-1042, 93-1043, 93-1044, 93-1012, 94-1195 and 94-1203 presented superiority, with oil percentage above 22%. In the selection of lines for stability and adaptability of the oil content in Piracicaba, SP, trials conducted in more than one year should be considered, with the purpose to decrease the effects of the genotype x environment interaction and obtain larger reliability in the recommendation of cultivars. Index terms: genotypic behavior, Glycine max, environmental response, phenotypic variation

FM 047-02: a collisional pair of galaxies with a ring

Aims. We investigate the nature of the galaxy pair FM 047-02, which has been proposed as an archetype of the Solitaire types of peculiar (collisional) ring galaxies. Methods. The study is based on long-slit spectrophotometric data in the range of 3500-9500 angstrons obtained with the Gemini Multi-ObjectComment: 07 pages, 06 figures, 02 tables. arXiv admin note: text overlap with arXiv:1206.071

Monte Carlo Simulations of Some Dynamical Aspects of Drop Formation

In this work we present some results from computer simulations of dynamical aspects of drop formation in a leaky faucet. Our results, which agree very well with the experiments, suggest that only a few elements, at the microscopic level, would be necessary to describe the most important features of the system. We were able to set all parameters of the model in terms of real ones. This is an additional advantage with respect to previous theoretical works.Comment: 7 pages (Latex), 6 figures (PS) Accepted to publication in Int. J. Mod. Phys. C Source Codes at http://www.if.uff.br/~arlim

Caracterização qualitativa de ácidos graxos como componentes dos óleos de grão de café verde, café torrado e borra de café.

Neste trabalho, avaliou-se a qualidade dos compostos de óleo extraído a partir de grãos de café verdes, grãos de café torrados e de borra de café. Para isso, utilizou-se o hexano como solvente e o equipamento Soxhlet como extrator, que utiliza refluxo de solvente em um processo intermitente. A temperatura da mistura óleo e hexano foram mantidas a 62 °C e o tempo de extração para cada cartucho foi de 2 horas. O rendimento da extração dos óleos de café variou entre 8 e 10%. Com base na análise dos ésteres metílicos dos ácidos graxos que compõem o óleo através de CGEM, fez-se uma análise qualitativa da composição desses óleos, com maiores teores sendo detectados na borra de café de grão torrado e menores teores na borra de café comercial