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

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

Energetics and Dipole Moment of Transition Metal Monoxides by Quantum Monte Carlo

The transition metal-oxygen bond appears very 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 depend strongly on fine details of the TM-O bond, which makes accurate calculations of their properties very challenging. Here we report on highly accurate first principles calculations of the properties of TM monoxide molecules within fixed-node Diffusion Monte Carlo and Reptation Monte Carlo.Comment: 6 pages, 2 figures, submitted to Journal of Chemical Physic

Non-orthogonal determinants in multi-Slater-Jastrow trial wave functions for fixed-node diffusion Monte Carlo

The accuracy and efficiency of ab-initio quantum Monte Carlo (QMC) algorithms benefits greatly from compact variational trial wave functions that accurately reproduce ground state properties of a system. We investigate the possibility of using multi-Slater-Jastrow trial wave functions with non-orthogonal determinants by optimizing identical single particle orbitals independently in separate determinants. As a test case, we compute variational and fixed-node diffusion Monte Carlo (FN-DMC) energies of a C$_2$ molecule. For a given multi-determinant expansion, we find that this non-orthogonal orbital optimization results in a consistent improvement in the variational energy and the FN-DMC energy on the order of a few tenths of an eV. Our calculations indicate that trial wave functions with non-orthogonal determinants can improve computed energies in a QMC calculation when compared to their orthogonal counterparts

Nurses Alumni Association Bulletin, Fall 2008

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

Transition metal oxides using quantum Monte Carlo

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

Nurses Alumni Association Bulletin, Fall 2005

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

Time and space integrating acousto-optic folded spectrum processing for SETI

Time and space integrating folded spectrum techniques utilizing acousto-optic devices (AOD) as 1-D input transducers are investigated for a potential application as wideband, high resolution, large processing gain spectrum analyzers in the search for extra-terrestrial intelligence (SETI) program. The space integrating Fourier transform performed by a lens channels the coarse spectral components diffracted from an AOD onto an array of time integrating narrowband fine resolution spectrum analyzers. The pulsing action of a laser diode samples the interferometrically detected output, aliasing the fine resolution components to baseband, as required for the subsequent charge coupled devices (CCD) processing. The raster scan mechanism incorporated into the readout of the CCD detector array is used to unfold the 2-D transform, reproducing the desired high resolution Fourier transform of the input signal