Browsing Faculty Research by Title
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Hardy, John C.; Brunnade, H.; Cerny, J. (American Physical Society, 1970)[more][less]
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.1.561 Files in this item: 0
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Sare, Laura (DttP: Documents to the People, 2009)[more][less]
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Qamar, S.; Zhu, S. Y.; Zubairy, M. Suhail. (American Physical Society, 2003)[more][less]
Abstract: In this paper, we propose a scheme for teleportating a superposition of atomic center-of-mass momentum states to a superposition of the cavity field using quantum controlled-NOT gate via atomic scattering in the Bragg regime and cavity quantum electrodynamics.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevA.67.042318 Files in this item: 1
PhysRevA.67.042318.pdf (94.05Kb) -
Annett, C.; LAWRENCE, WR; Allen, Roland E. (American Physical Society, 1974)[more][less]
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.10.4184 Files in this item: 1
PhysRevB.10.4184.pdf (232.3Kb) -
Adair, Thomas W. (American Physical Society, 1972)[more][less]
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevA.6.487 Files in this item: 1
PhysRevA.6.487.pdf (476.7Kb) -
Nica, N.; Hardy, John C.; Iacob, V. E.; Rockwell, W. E.; Trzhaskovskaya, M. B. (American Physical Society, 2007)[more][less]
Abstract: We have measured the ratio of K-shell internal conversion coefficients, alpha(K), for the 127.5-keV E3 transition in Cs-134 and the 661.7-keV M4 transition in Ba-137. Previous measurements of these alpha(K) values led to a ratio that differed from calculated internal conversion coefficients. Our measured result, 30.01(15), disagrees with, but is a factor of three more precise than, the previous average of all experimental results. Our new result is consistent with calculations.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.75.024308 Files in this item: 1
PhysRevC.75.024308.pdf (290.7Kb) -
Gagliardi, Carl A.; Tribble, Robert E.; Azhari, A.; Clark, HL; Lui, YW; Mukhamedzhanov, AM; Sattarov, A.; Trache, L.; Burjan, V.; Cejpek, J.; Kroha, V.; Piskor, S.; Vincour, J. (American Physical Society, 1999)[more][less]
Abstract: The O-16(He-3,d)F-17 reaction has been used to determine asymptotic normalization coefficients for transitions to the ground and first excited states of F-17. Th, coefficients provide the normalization for the tails of the overlap functions for F-17-->O-16+p and allow us to calculate the S factors for O-16(p,gamma)F-17 at astrophysical energies. The calculated S factors are compared to measurements and found to be in very good agreement. This provides a test of this indirect method to determine astrophysical direct capture rates using transfer reactions. In addition, our results yield S(0) for capture to the ground and first excited states in F-17, without the uncertainty associated with extrapolation from higher energies. [S0556-2813(99)00702-5].
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.59.1149 Files in this item: 1
PhysRevC.59.1149.pdf (115.2Kb) -
Clement, Gail; Brenenson, Stephanie (Association of College & Research Libraries, Chicago, IL, 2013)[more][less]
Description: This work originally appeared in “Common Ground at the Nexus of Information Literacy and Scholarly Communication” edited by Stephanie Davis-Kahl and Merinda Kaye Hensley. Chicago, IL: Association of College & Research Libraries, 2013. Any use of this work must be accompanied by this notification.
URI: http://hdl.handle.net/1969.1/148619 Files in this item: 1
Clement&Brenenson2013.pdf (288.0Kb) -
REN, SY; Allen, Roland E.; DOW, JD; LEFKOWITZ, I. (American Physical Society, 1982)[more][less]
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.25.1205 Files in this item: 1
PhysRevB.25.1205.pdf (382.8Kb) -
Ooi, C. H. Raymond; Beadie, G.; Kattawar, George W.; Reintjes, J. F.; Rostovtsev, Y.; Zubairy, M. Suhail; Scully, Marlan O. (American Physical Society, 2005)[more][less]
Abstract: Backscattered signal of coherent anti-Stokes Raman spectroscopy can be an extremely useful tool for remote identification of airborne particles, provided the signal is sufficiently large. We formulate a semiclassical theory of nonlinear scattering to estimate the number of detectable photons from a bacterial spore at a distance. For the first time, the theory incorporates enhanced quantum coherence via femtosecond pulses and a nonlinear process into the classical scattering problem. Our result shows a large backscattered signal in the far field, using typical parameters of an anthrax spore with maximally prepared vibrational coherence. Using train pulses of 1 kHz of repetition rate each with energy of 10 mJ, we estimate that about 10(7) photons can be detected by a 1 m diameter detector placed 1 km away from the spore in the backward scattering direction. The result shows the feasibility of developing a real time remote detection of hazardous microparticles in the atmosphere, particularly biopathogenic spores.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevA.72.023807 Files in this item: 1
PhysRevA.72.023807.pdf (474.8Kb) -
Saslow, WM; Agnolet, Glenn; Campbell, CE; Clements, BE; Krotscheck, E. (American Physical Society, 1996)[more][less]
Abstract: Thin liquid He-4 films on graphite show evidence of layered growth with increasing number density via a succession of first-order phase transitions. These so-called ''layering transitions'' separate uniformly covering phases, such as monolayers and bilayers. The present work is a detailed theoretical study of such layering transitions using a Maxwell construction. We model the graphite surface by a strong substrate potential, and using a microscopic variational theory we obtain the uniform coverage solutions for liquid helium. For each layer, the theory yields the chemical potential mu and surface tension alpha as functions of coverage n, and from this we deduce mu(a). For each set of adjacent layers, we then obtain the crossing point in the curves of mu(alpha). In this way we obtain the values of mu, alpha, and surface coverages for the transition. Particular attention is paid to the monolayer-bilayer transition.
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.54.6532 Files in this item: 1
PhysRevB.54.6532.pdf (109.1Kb) -
Lee, Wei-Cheng; Sinova, Jairo; Burkov, A. A.; Joglekar, Yogesh; MacDonald, A. H. (American Physical Society, 2008)[more][less]
Abstract: The critical temperature of an underdoped cuprate superconductor is limited by its phase stiffness rho. In this paper we argue that the dependence of rho on doping x should be understood as a consequence of deleterious competition with antiferromagnetism at large electron densities, rather than as evidence for pairing of holes in the x=0 Mott insulator state. rho is suppressed at small x because the correlation energy of a d-wave superconductor has a significant pairing-wave-vector dependence when antiferromagnetic fluctuations are strong.
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.77.214518 Files in this item: 1
PhysRevB.77.214518.pdf (150.8Kb) -
Lyuksyutov, Igor F.; Nattermann, T.; Pokrovsky, Valery L. (American Physical Society, 1999)[more][less]
Abstract: We consider three mechanisms of hysteresis phenomena in alternating magnetic field: the domain-wall motion in a random medium, the nucleation, and the retardation of magnetization due to slow (critical) fluctuations. We construct a quantitative theory for all these processes. The hysteresis is characterized by two dynamic threshold fields, a coercive field and the so-called reversal field. Their ratios to the static threshold field is shown to be a function of two dimensionless variables constituted from the frequency and amplitude of the ac field as well as from some characteristics of the magnet. The area and the shape of the hysteresis loop are found. We consider different limiting cases in which power dependencies are valid. Numerical simulations show the domain-wall formation and propagation and confirm the main theoretical predictions. Theory is compared with available experimental data. [S0163-1829(98)06545-X].
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.59.4260 Files in this item: 1
PhysRevB.59.4260.pdf (305.2Kb) -
Scully, Marlan O.; Zubairy, M. Suhail. (American Physical Society, 1987)[more][less]
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevA.35.752 Files in this item: 0
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Garate, Ion; Sinova, Jairo; Jungwirth, T.; MacDonald, A. H. (American Physical Society, 2009)[more][less]
Abstract: We study quantum interference corrections to the conductivity in (Ga,Mn)As ferromagnetic semiconductors using a model with disordered valence-band holes coupled to localized Mn moments through a p-d kinetic-exchange interaction. We find that at Mn concentrations above 1% quantum interference corrections lead to negative magnetoresistance, i.e., to weak localization (WL) rather than weak antilocalization (WAL). Our work highlights key qualitative differences between (Ga,Mn)As and previously studied toy-model systems and pinpoints the mechanism by which exchange splitting in the ferromagnetic state converts valence-band WAL into WL. We comment on recent experimental studies and theoretical analyses of low-temperature magnetoresistance in (Ga,Mn)As which have been variously interpreted as implying both WL and WAL and as requiring an impurity-band interpretation of transport in metallic (Ga,Mn)As.
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.79.155207 Files in this item: 1
PhysRevB.79.155207.pdf (295.5Kb) -
Zhang, Ben-Wei; Ko, Che Ming; Liu, Wei. (American Physical Society, 2008)[more][less]
Abstract: Charm production from the quark-gluon plasma created in the midrapidity of central heavy ion collisions at the Large Hadron Collider (LHC) is studied in the next-to-leading order in QCD. Using a schematic longitudinally boost-invariant and transversally expanding fire-cylinder model, we find that charm production could be appreciably enhanced at LHC as a result of the high temperature that is expected to be reached in the produced quark-gluon plasma. Sensitivities of our results to the number of charm quark pairs produced from initial hard scattering, the initial thermalization time and temperature of the quark-gluon plasma, and the charm quark mass are also studied.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.77.024901 Files in this item: 1
PhysRevC.77.024901.pdf (293.1Kb) -
KESMODEL, LL; WETTE, FWD; Allen, Roland E. (American Physical Society, 1973)[more][less]
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.7.802 Files in this item: 1
PhysRevB.7.802.pdf (968.7Kb) -
van Hees, H.; Rapp, Ralf. (American Physical Society, 2005)[more][less]
Abstract: Charm- and bottom-quark rescattering in a quark-gluon plasma (QGP) is investigated with the objective of assessing the approach toward thermalization. Employing a Fokker-Planck equation to approximate the collision integral of the Boltzmann equation we augment earlier studies based on perturbative parton cross sections by introducing resonant heavy-light quark interactions. The latter are motivated by recent QCD lattice calculations that indicate the presence of "hadronic" states in the QGP. We model these states by colorless (pseudo-) scalar and (axial-) vector D and B mesons within a heavy-quark effective theory framework. We find that the presence of these resonances at moderate QGP temperatures substantially accelerates the kinetic equilibration of c quarks as compared to using perturbative interactions. We also comment on consequences for D-meson observables in ultrarelativistic heavy-ion collisions.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.71.034907 Files in this item: 1
PhysRevC.71.034907.pdf (183.8Kb) -
Hennings, BD; Naugle, Donald G.; Canfield, PC. (American Physical Society, 2002)[more][less]
Abstract: The quaternary intermetallic rare-earth nickel borocarbides RNi2B2C are a family of compounds that show magnetic behavior, superconducting behavior, and/or both. Thermal transport measurements reveal both electron and phonon scattering mechanisms, and can provide information on the interplay of these two long-range phenomena. In general the thermal conductivity kappa is dominated by electrons, and the high temperature thermal conductivity is approximately linear in temperature and anomalous. For R=Tm, Ho, and Dy the low-temperature thermal conductivity exhibits a marked loss of scattering at the antiferromagnetic ordering temperature T-N. Magnon heat conduction is suggested for R=Tm. The kappa data for R=Ho lends evidence for gapless superconductivity in this material above T-N. Unlike the case for the non-magnetic superconductors in the family, R=Y and Lu, a phonon peak in the thermal conductivity below T-c is not observed down to T=1.4 K for the magnetic superconductors. Single-crystal quality seems to have a strong effect on kappa. The electron-phonon interaction appears to weaken as one progresses from R=Lu to R=Gd. The resistivity data shows the loss of scattering at T-N for R=Dy, Tb, and Gd; and the thermoelectric power for all three of these materials exhibits an enhancement below T-N.
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.66.214512 Files in this item: 1
PhysRevB.66.214512.pdf (141.6Kb) -
Mishonov, TM; Pokrovsky, Valery L.; Wei, HD. (American Physical Society, 2005)[more][less]
Abstract: Based on weak-coupling anisotropic BCS theory, the temperature dependence of energy gap and the specific heat are evaluated for the MgB2 superconductor, and the results are compared with experimental data. We show that the weak-coupling anisotropic BCS theory describes thermodynamic experimental data with high precision, 3-6%.
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevB.71.012514 Files in this item: 1
PhysRevB.71.012514.pdf (85.34Kb)
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