2,098 research outputs found

    Stable and unstable regimes in Bose-Fermi mixture with attraction between components

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    A collapse of the trapped boson- fermion mixture with the attraction between bosons and fermions is investigated in the framework of the effective Hamiltonian for the Bose system. The properties of the 87^{87}Rb and 40^{40}K mixture are analyzed quantitatively at T=0T= 0. We find numerically solutions of modified Gross- Pitaevskii equation which continuously go from stable to unstable branch. We discuss the relation of the onset of collapse with macroscopic properties of the system. A comparison with the case of a Bose condensate of atomic 7Li^7Li system is given.Comment: 7 pages, 5 figure

    Ariel - Volume 3 Number 3

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    Editors Richard J. Bonanno Robin A. Edwards Associate Editors Steven Ager Stephen Flynn Tom Williams Lay-out Editor Eugenia Miller Contributing Editors Paul Bialas Robert Breckenridge Lynne Porter Milton Packer Terry Burt Mark Pearlman Editors Emeritus Delvyn C. Case, Jr. Paul M. Fernhoff Mike Le

    Pavement Ants (Tetramorium immigrans Santschi)

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    This fact sheet describes pavement ants. It covers identification, biology and habits, and management

    Bank Consolidation and its Effect on Service Quality

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    The perceived quality of customer service plays a significant role in high involvement products and services. Previous research in the area of bank service quality suggests that as a bank is acquired the quality of service at the new larger bank does not equal what customers received at their old smaller bank. In addition, a newly consolidated bank may eliminate tailored services and create customer dissatisfaction due to higher fees, lower levels of service, and credit availability. Although prior research has focused on specific aspects of bank services, a contribution to the literature can be made by examining this topic in the context of broader dimensions of customer service. Therefore the objective of this research is to determine 1) if overall customer service differs between small bank and large bank organizations and 2) if service quality dimensions of tangibles, reliability, responsiveness, assurance, and empathy differ between small and large bank organizations

    Parsing (malicious) pleasures:schadenfreude and gloating

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    We offer the first empirical comparison of the pleasure in seeing (i.e., schadenfreude) and in causing (i.e., gloating) others’ adversity. In Study 1, we asked participants to recall and report on an (individual or group) episode of pleasure that conformed to our formal definition of schadenfreude, gloating, pride, or joy, without reference to an emotion word. Schadenfreude and gloating were distinct in the situational features of the episode, participants’ appraisals of it, and their expressions of pleasure (e.g., smiling, boasting). In Study 2, we had participants imagine being in an (individual or group) emotion episode designed to fit our conceptualization of schadenfreude or gloating. Individual and group versions of the emotions did not differ much in either study. However, the two pleasures differed greatly in their situational features, appraisals, experience, and expression. This parsing of the particular pleasures of schadenfreude and gloating brings nuance to the study of (malicious) pleasure, which tends to be less finely conceptualized and examined than displeasure despite its importance to social relations

    “Fury, us”: Anger as a basis for new group self-categories

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    We tested the hypothesis that shared emotions, notably anger, influence the formation of new self-categories. We first measured participants' (N = 89) emotional reactions to a proposal to make university assessment tougher before providing feedback about the reactions of eight other co-present individuals. This feedback always contained information about the other individuals' attitudes to the proposals (four opposed and four not opposed) and in the experimental condition emotion information (of those opposed, two were angry, two were sad). Participants self-categorised more with, and preferred to work with, angry rather than sad targets, but only when participants' own anger was high. These findings support the idea that emotions are a potent determinant of self-categorisation, even in the absence of existing, available self-categories
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