46,809 research outputs found

    Scalar Casimir Energies for Separable Coordinate Systems: Application to Semi-transparent Planes in an Annulus

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    We derive a simplified general expression for the two-body scalar Casimir energy in generalized separable coordinate systems. We apply this technique to the case of radial semi-transparent planes in the annular region between two concentric Dirichlet cylinders. This situation is explored both analytically and numerically.Comment: 8 pages, 5 figures. Contribution to Proceedings of 9th Conference on Quantum Field Theory Under the Influence of External Conditions, QFEXT0

    Nurses Alumni Association Bulletin, Fall 2008

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    Meetings and Annual Luncheon Table of Contents Officers for 2008-2009 President\u27s Message Treasurer\u27s Financial Report Alumni Scholarship Funds and Endowment Fund Resume of Minutes Alumni Office News Committee Reports Annual Giving Contributors Janet C. Hindson Award Award Qualifications Janet C. Hindson Recipient and Nominees Recipient\u27s Acceptance Speech Ode to Sally Sally\u27s Appreciation News About and From Our Graduates Happy Birthday Interview with a Nurse Memories Fiftieth Anniversary Class 2008 Luncheon Attendees Luncheon Photos In Memoriam Class News~ 2008 Additional Information Application For Nurses Scholarship Fund Application Application For Certification Application For Relief Fund Benefits Hotels Campus Map Note

    Nurses Alumni Association Bulletin, Fall 2005

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    2005 - 2006 Meeting Date Calendar 2006 Annual Luncheon & Meeting Notice Officers, Committee Chairs, Satellite and Volunteers Bulletin Publication Committee The President\u27s Message Treasurer\u27s Report Resume of Minutes Office News Committee Reports Relief Trust Fund Satellite - Harrisburg Satellite Area Bulletin Scholarship Nominating Social Development Annual Giving Janet C. Hindson Award Recipients and Nominees Janet C. Hindson Award Qualifications Quotes from Janet C. Hindson\u27s Recipients Letters Quotes from Letters on Nursing at Jefferson Biography of Lenora Schwartz, \u2766 News About Graduates Memories Odds & Ends How I got my Education U.S. Cadet Nurse Corps Normandy Nightingales Weathered War\u27s Worst Happy Birthday, To Be 80 or more 50th Anniversary Class Center page Luncheon Attendees Class News In Memoriam, Names of Deceased Graduates Additional Information, Pins, Transcript & Address Info Constitution and By-Laws Scholarship Fund Application Certification Reimbursement Application Relief Fund Application List of Hotels Campus Ma

    Transition metal oxides using quantum Monte Carlo

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    The transition metal-oxygen bond appears prominently throughout chemistry and solid-state physics. Many materials, from biomolecules to ferroelectrics to the components of supernova remnants contain this bond in some form. Many of these materials' properties strongly depend on fine details of the TM-O bond and intricate correlation effects, which make accurate calculations of their properties very challenging. We present quantum Monte Carlo, an explicitly correlated class of methods, to improve the accuracy of electronic structure calculations over more traditional methods like density functional theory. We find that unlike s-p type bonding, the amount of hybridization of the d-p bond in TM-O materials is strongly dependant on electronic correlation.Comment: 20 pages, 4 figures, to appear as a topical review in J. Physics: Condensed Matte

    New results in exclusive hard reactions

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    Generalized Parton Distributions offer a new way to access the quark and gluon nucleon structure. We review recent progress in this domain, emphasizing the need to supplement the experimental study of DVCS by its crossed version, timelike Compton scattering (TCS), where data at high energy should appear thanks to the study of ultraperipheral collisions at the LHC. This will open the access to very low skewness quark and gluon GPDs. Our leading order estimates show that the factorization scale dependence of the amplitudes is quite high. This fact demands the understanding of higher order contributions with the hope that they will stabilize this scale dependence. The magnitudes of the NLO coefficient functions are not small and neither is the difference of the coefficient functions appearing respectively in the DVCS and TCS amplitudes. The conclusion is that extracting the universal GPDs from both TCS and DVCS reactions requires much care. We also describe the extension of the GPD concept to three quark operators and the relevance of their nucleon to meson matrix elements, namely the transition distribution amplitudes (TDAs) which factorize in hard exclusive pion electroproduction off a nucleon in the backward region and baryon-antibaryon annihilation into a pion and a lepton pair. We discuss the main properties of the TDAs.Comment: 4 pages, to be published in the proceedings of the 2011 Europhysics Conference on High Energy Physics-HEP 2011, July 21-27, 2011, Grenoble, Rhone-Alpes, Franc
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