The Momentum Distribution of Liquid 3^3He

We present high-resolution neutron Compton scattering measurements of liquid $^3$He below its renormalized Fermi temperature. Theoretical predictions are in excellent agreement with the experimental data when instrumental resolution and final state effects are accounted for. Our results resolve the long-standing inconsistency between theoretical and experimental estimates of the average atomic kinetic energy.Comment: 5 pages, 4 figure

Atomic kinetic energy, momentum distribution and structure of solid neon at zero-temperature

We report on the calculation of the ground-state atomic kinetic energy, $E_{k}$, and momentum distribution of solid Ne by means of the diffusion Monte Carlo method and Aziz HFD-B pair potential. This approach is shown to perform notably for this crystal since we obtain very good agreement with respect to experimental thermodynamic data. Additionally, we study the structural properties of solid Ne at densities near the equilibrium by estimating the radial pair-distribution function, Lindemann's ratio and atomic density profile around the positions of the perfect crystalline lattice. Our value for $E_{k}$ at the equilibrium density is $41.51(6)$ K, which agrees perfectly with the recent prediction made by Timms {\it et al.}, $41(2)$ K, based on their deep-inelastic neutron scattering experiments carried out over the temperature range $4 - 20$ K, and also with previous path integral Monte Carlo results obtained with the Lennard-Jones and Aziz HFD-C2 atomic pairwise interactions. The one-body density function of solid Ne is calculated accurately and found to fit perfectly, within statistical uncertainty, to a Gaussian curve. Furthermore, we analyze the degree of anharmonicity of solid Ne by calculating some of its microscopic ground-state properties within traditional harmonic approaches. We provide insightful comparison to solid $^4$He in terms of the Debye model, in order to size the relevance of anharmonic effects in Ne.Comment: 20 pages, 7 figures. To be published in Physical Review

Beyond the binary collision approximation for the large-qq response of liquid 4^4He

We discuss corrections to the linear response of a many-body system beyond the binary collision approximation. We first derive for smooth pair interactions an exact expression of the response $\propto 1/q^2$, considerably simplifying existing forms and present also the generalization for interactions with a strong, short-range repulsion. We then apply the latter to the case of liquid $^4$He. We display the numerical influence of the $1/q^2$ correction around the quasi-elastic peak and in the low-intensity wings of the response, far from that peak. Finally we resolve an apparent contradiction in previous discussions around the fourth order cumulant expansion coefficient. Our results prove that the large-$q$ response of liquid $^4$He can be accurately understood on the basis of a dynamical theory.Comment: 19 p. Figs. available on reques

Poetry, Religion, and Empowerment in Nigerian Lesbian Self-Writing

The Nigerian LGBT community is nearly invisible and mostly functions underground or through pseudonyms, in spite of the emerging visibility of queer writing in recent times. As a Nigerian lesbian woman and writer, in this article I seek to analyse some of my queer poems through an auto-ethnographic lens. While providing a brief history of contemporary Nigerian queer writings, their beginnings, their struggles, and their growth, even in the midst of their attacks, I will focus on and draw upon specific ex-periences as narrated in some of my poems, to explore how the religious constructions of my life and the lives of LGBT Nigerians can both limit and empower us. Through my experiences and the sharing of these involve-ments, I hope to be a part of the process that dismantles the religious block of homophobia that crushes us, and to reclaim religious language and imagery as a site of empowerment. Through my poetic testimonies, I liberate myself and, hopefully, my queer community

External Influences on Students’ Choice of Clothing in Takoradi Polytechnic

Clothing is an important factor in the interpretation of body image which affects the response behaviour of the beholder. A person’s appearance profoundly affects the way he or she is treated by others at home, social gathering, market, job area, office or school. Selecting clothing requires careful considerations. The purpose of the study was to find out external influences on students’ choice of clothing in Takoradi Polytechnic. The research design was descriptive. Questionnaires and focus group discussion guide were used. Departments of Fashion and Accounting participated with respondents chosen through stratified random sampling. Sample consisted of 207 with a total population of 699 students, 77 males and 130 females. Study revealed students dress casually for lectures instead of formally because casual wear could take any form. Male students’ were normally driven internally indicating individuality while female students were mostly externally directed. Both sexes would least choose clothing for warm relationship. The more individuals they were aware of their inner feelings, the more differentiation they exhibited in their choice of clothing. This is contrary to the general perception that students or the youth choice of clothing is socially driven. However, some external factors were also quite significant in students’ choices and should be given close attention if youth clothing are undesirable. This calls for continues education to streamline vital issues that are of significance to academic institutions and the African society as a whole

High-momentum dynamic structure function of liquid 3He-4He mixtures: a microscopic approach

The high-momentum dynamic structure function of liquid 3He-4He mixtures has been studied introducing final state effects. Corrections to the impulse approximation have been included using a generalized Gersch-Rodriguez theory that properly takes into account the Fermi statistics of 3He atoms. The microscopic inputs, as the momentum distributions and the two-body density matrices, correspond to a variational (fermi)-hypernetted chain calculation. The agreement with experimental data obtained at $q=23.1$ \AA$^{-1}$ is not completely satisfactory, the comparison being difficult due to inconsistencies present in the scattering measurements. The significant differences between the experimental determinations of the 4He condensate fraction and the 3He kinetic energy, and the theoretical results, still remain unsolved.Comment: 18 pages, 11 figures, to appear in Phys. Rev.

External influences on students’ choice of clothing in Takoradi Polytechnic

Clothing is an important factor in the interpretation of body image which affects the response behaviour of the beholder. A person’s appearance profoundly affects the way he or she is treated by others at home, social gathering, market, job area, office or school. Selecting clothing requires careful considerations. The purpose of the study was to find out external influences on students’ choice of clothing in Takoradi Polytechnic. The research design was descriptive. Questionnaires and focus group discussion guide were used. Departments of Fashion and Accounting participated with respondents chosen through stratified random sampling. Sample consisted of 207 with a total population of 699 students, 77 males and 130 females. Study revealed students dress casually for lectures instead of formally because casual wear could take any form. Male students’ were normally driven internally indicating individuality while female students were mostly externally directed. Both sexes would least choose clothing for warm relationship. The more individuals they were aware of their inner feelings, the more differentiation they exhibited in their choice of clothing. This is contrary to the general perception that students or the youth choice of clothing is socially driven. However, some external factors were also quite significant in students’ choices and should be given close attention if youth clothing are undesirable. This calls for continues education to streamline vital issues that are of significance to academic institutions and the African society as a whole