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4. Bibliography

Author

Henderson, T. Stephen

Published
2007

7. Conclusion

Author

Henderson, T. Stephen

Published
2007

9. Notes

Author

Henderson, T. Stephen

Published
2007

20. Particle-number projected Bogoliubov coupled cluster theory. Application to the pairing Hamiltonian

Author

Qiu, Y., Henderson, T. M., Duguet, T., and Scuseria, G. E.

Subjects
Nuclear Theory, Condensed Matter - Strongly Correlated Electrons, Physics - Chemical Physics
Abstract

While coupled cluster theory accurately models weakly correlated quantum systems, it often fails in the presence of strong correlations where the standard mean-field picture is qualitatively incorrect. In many cases, these failures can be largely ameliorated by permitting the mean-field reference to break physical symmetries. Symmetry-broken coupled cluster, e.g. Bogoliubov coupled cluster, theory can indeed provide reasonably accurate energetic predictions, but the broken symmetry can compromise the quality of the resulting wave function and predictions of observables other than the energy. Merging symmetry projection and coupled cluster theory is therefore an appealing way to describe strongly correlated systems. Independently, two different but related formalisms have been recently proposed to achieve this goal. The two formalisms are contrasted in this manuscript, with results tested on the Richardson pairing Hamiltonian. Both formalisms are based on the disentangled cluster representation of the symmetry-rotated coupled cluster wavefunction. However, they differ in the way that the disentangled clusters are solved. One approach sets up angle-dependent coupled cluster equations, while the other involves first-order ordinary differential equations. The latter approach yields energies and occupation probabilities significantly better than those of number-projected BCS and BCS coupled cluster and, when the disentangled clusters are truncated at low excitation levels, has a computational cost not too much larger than that of BCS coupled cluster. The high quality of results presented in this manuscript indicates that symmetry-projected coupled cluster is a promising method that can accurately describe both weakly and strongly correlated finite many-fermion systems., Comment: 20 pages, 9 figures (1 figure added)

Published
2018
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24. Scat contents of a spotted-tailed quoll (Dasyurus maculatus) reveal evidence of broad-toothed rat (Mastacomys fuscus) within a fragmented habitat in the Hunter Valley, New South Wales.

Author

Henderson, T. and Nest, C.

Subjects
FRAGMENTED landscapes, WILDLIFE conservation, ENDANGERED species, RATS
Abstract

We found evidence of a broad-toothed rat (Mastacomys fuscus) in a spotted-tailed quoll (Dasyurus maculatus) scat collected within a fragmented site in the Hunter Valley, New South Wales. The nearest known population of M. fuscus is located 50 km away in the Barrington Tops, where the population is listed as endangered. This is a potentially significant discovery for the conservation of this species and suggests that it may exist in a fragmented landscape outside its current distribution. We recommend further research is undertaken to determine if a population does exist near to where the sample was collected. A spotted-tailed quoll (Dasyurus maculatus) scat collected in a fragmented habitat in the Hunter Valley, NSW contained evidence of a broad-toothed rat (Mastacomys fuscus). Given the nearest population of broad-toothed rat is located 50 km away in the Barrington Tops, this is a potentially important discovery for the conservation of this threatened species. [ABSTRACT FROM AUTHOR]

Published
2024
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26. Prevalence of Child and Adult Sexual Abuse and Risk Taking Practices Among HIV Serodiscordant African-American Couples

Author

El-Bassel, N, Wingood, G, Wyatt, GE, III, JJB, Pequegnat, W, Landis, JR, Bellamy, S, Gilbert, L, Remien, RH, Witte, S, Wu, E, DiClemente, R, Myers, H, Jemmott, LS, Metzger, D, Brown, T, Greene, Q, Helker, C, Robinson, N, Allen-Taylor, L, Appleby, D, Crowley, E, Ankoma, A, Ashton, D, Goddard, DA, Daniel, T, Henderson, T, Rivkin, I, Green, CM, Cheraquit, RD, Gray, D, Hakim, L, Sarfo, B, Saunders, K, Simmons, D, Wilson, K, Braxton, ND, Camp, C, Conner, A, Gibson, J, Harmon, A, Latham, T, Pennick-Walters, T, Rucker, K, Steinback, S, Williams, P, Williams, R, Williams, S, Chancy, K, Levels, F, Thomas, N, Bennett, R, Bryson, S, Curtis, S, Jones, M, Jones, P, Moore, M, Patterson, C, Penn, M, Samuel, A, Shine, R, Stevenson, R, Tate, R, Taylor, M, Wroton, C, Griffith, D, Johnson, P, Matthews, L, Mendoza, R, Winkle, A, Daugherty, J, Er, D, Felix, L, Hailemeskal, M, Howard, T, Hoyte, T, Smith, J, Smith, L, DeMorst, L, Regan, R, Rogers, E, Carter, K, Collier, C, Croom, M, Samuel, D, Sosa, J, Taylor, B, Bryan, TS, Robinson-Simpson, L, Loeb, T, Williams, J, Gueits, L, Bayer, C, Caliendo, A, Freeman, S, Ingersoll, J, Maslankowski, L, McGee-Smith, D, and Moorer, P

Subjects
HIV, Child sexual abuse, Adult sexual abuse, Serodiscordant, Sexual re-victimization, African-American couples
Published
2010

29. Superbend upgrade of the Advanced Light Source

Author

Robin, D., Krupnick, J., Schlueter, R., Steier, C., Marks, S., Wang, B., Zbasnik, J., Benjegerdes, R., Biocca, A., Bish, P., Brown, W., Byrne, W., Chen, J., Decking, W., DeVries, J., DeMarco, W.R., Fahmie, M., Geyer, A., Harkins, J., Henderson, T., Hinkson, J., Hoyer, E., Hull, D., Jacobson, S., McDonald, J., Molinari, P., Mueller, R., Nadolski, L., Nishimura, H., Nishimura, K., Ottens, F., Paterson, J.A., Pipersky, P., Portmann, G., Richie, A., Rossi, S., Salvant, B., Scarvie, T., Schmidt, A., Spring, J., Taylor, C., Thur, W., Timossi, C., and Wandesforde, A.

Subjects
Engineering, Classical and quantum mechanics, general physics, storage rings superconducting magnets x-rays beam dynamics
Abstract

The Advanced Light Source (ALS) is a third generation synchrotron light source located at Lawrence Berkeley National Laboratory (LBNL). There was an increasing demand at the ALS for additional high brightness hard x-ray beamlines in the 7 to 40 keV range. Inresponse to that demand, the ALS storage ring was modified inAugust 2001. Three 1.3 Tesla normal conducting bending magnets were removed and replaced with three 5 Tesla superconducting magnets (Superbends). The radiation produced by these Superbends is an order of magnitude higher in photon brightness and flux at 12 keV than that of the 1.3 Tesla bends, making them excellent sources of hard x-rays for protein crystallography and other hard x-ray applications. At the same time the Superbends did not compromise the performance of the facility in the VUV and softx-ray regions of the spectrum. The Superbends will eventually feed 12 new beam lines greatly enhancing the facility's capability and capacity in the hard x-ray region. The Superbend project is the biggest upgrade to the ALS storage ring since it was commissioned in 1993. In this paper we present an overview of the Superbend project, its challenges and the resulting impact on the ALS.

Published
2004

30. ALS superbend magnet system

Author

Zbasnik, J., Wang, S.T., Chen, J.Y., DeVries, G.J., DeMarco, R., Fahmie, M., Geyer, A., Green, M.A., Harkins, J., Henderson, T., Hinkson, J., Hoyer, E.H., Krupnick, J., Marks, S., Ottens, F., Paterson, J.A., Pipersky, P., Portmann, G., Robin, D.A., Schlueter, R.D., Steier, C., Taylor, C.E., and Wahrer, R.

Subjects
Particle accelerators
Published
2000

44. Preface

Author

Pecorella T., Avallone S., Henderson T., Pecorella, T., Avallone, S., Henderson, T., Pecorella, T., Avallone, S., and Henderson, T.

Published
2019

45. Letters

Author

Hohloch, Faith J., Talbott, Susan, Smith, Ann N., Knauss, Doris, Flaitz, John M., Henderson, T. A., Martens, Katherine E., Rodgers, Janet A., Dunn, Dorothea, and Jones, Pamela Sue

Published
1980
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46. DNA Replication

Author

Kubitschek, H. E. and Henderson, T. R.

Published
1966

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