Physical sciences topic list of research papers
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Inflation mechanism in asymptotic noncommutative geometry
Abstract The possibility of having an inflationary epoch within a noncommutative geometry approach to unifying gravity and the Standard Model is demonstrated. This inflationary phase occurs without the need to introduce ad hoc additional fields or...
2009 / William Nelson, Mairi Sakellariadou -
Transversity decomposition of quark angular momentum
Abstract We express the correlation between quark transversity and (total) quark angular momentum in terms of the second moment of chirally odd generalized parton distributions. The resulting relation allows to determine how much quarks of a given...
2006 / Matthias Burkardt -
On the accretion of phantom energy onto wormholes
Abstract By using a properly generalized accretion formalism it is argued that the accretion of phantom energy onto a wormhole does not make the size of the wormhole throat to comovingly scale with the scale factor of the universe, but instead...
2005 / Pedro F. González-Díaz -
Anti-gravitation
Abstract The possibility of a symmetry between gravitating and anti-gravitating particles is examined. The properties of the anti-gravitating fields are defined by their behavior under general diffeomorphisms. The equations of motion and the...
2006 / S. Hossenfelder -
Operational definition of (brane-induced) space–time and constraints on the fundamental parameters
Abstract First we contemplate the operational definition of space–time in four dimensions in light of basic principles of quantum mechanics and general relativity and consider some of its phenomenological consequences. The quantum gravitational...
2008 / Michael Maziashvili -
Laser-controlled production of Rydberg positronium via charge exchange collisions
Abstract Lasers are used to choose the binding energies of highly excited positronium atoms ( Ps * ) created via charge...
2004 / A. Speck, C.H. Storry, E.A. Hessels, G. Gabrielse -
On quantum iterated function systems2006 / Arkadiusz Jadczyk
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Out-of-equilibrium behavior of coarsening ferromagnets
Abstract The out-of-equilibrium properties of ferromagnets quenched below the critical point are discussed in the dynamical scaling limit. The autoresponse and the autocorrelation are studied for both perfect and disordered ferromagnets. The scaling ...
2010 / M. Pleimling -
Modelling SIMION’s accuracy for hemispherical deflector analyzers using a spherical capacitor2008 / T.J.M. Zouros, F.M. Spiegelhalder, David J. Manura
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Spectral broadening in phonon Raman scattering and its stokes to anti-stokes intensity ratio
Abstract We measured the Stokes to anti-Stokes intensity ratio in the phonon Raman spectrum of a rutile (TiO2) crystal. We found that although the ratio still equals the Boltzmann factor at the center frequency ...
2011 / Junji Watanabe, Shuichi Kinoshita -
Top decays with flavor changing neutral Higgs interactions at the LHC
Abstract We investigate the prospects for discovering a top quark decaying into one light Higgs boson along with a charm quark in top quark pair production at the CERN Large Hadron Collider (LHC). A general two Higgs doublet model is adopted to...
2012 / Chung Kao, Hai-Yang Cheng, Wei-Shu Hou, Joshua Sayre -
Prediction of Coal Spontaneous Combustion in Goaf Based on the BP Neural Network
Abstract On the basis of the gas monitoring system with beam tube, the BP neural network model for forecasting the temperature of coal spontaneous combustion was established. The temperature of goaf can be forecast by using the concentration values...
2012 / Zhenhua Xie, Yu Zhang, Cai Jin -
Dicing of Thin Si Wafers with a Picosecond Laser Ablation Process
Abstract These days most common way to produce electrical components like LEDs, solar cells or transistors is a batch process. Therefore a lot of identical components are processed parallel on one big wafer and eventually each chip has to be...
2013 / C. Fornaroli, J. Holtkamp, A. Gillner -
Design of a Thermal Neutron Beam for a New Neutron Imaging Facility at Tehran Research Reactor
Abstract A new neutron imaging facility will be built around the Tehran Research Reactor (TRR). The TRR is an open pool light water moderated5 MW research reactor with six beam tubes. The neutron energy spectrum near the reactor core at the entrance ...
2015 / Mohammad Hossein Choopan Dastjerdi, Hossein Khalafi -
Determining the Jet Energy Scale uncertainty in the ATLAS detector
Abstract Using jets from proton–proton collisions at a centre of mass energy of s = ...
2012 / Lucy Kogan -
TauSpinner program for studies on spin effect in tau production at the LHC2012 / Z. Czyczula, T. Przedzinski, Z. Was
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The frequency dependent response of the electrical impedance of UO2
Abstract AC impedance techniques in the frequency range 5 Hz to 5 MHz have been employed to measure dielectric properties of single crystal UO2 in the form of plate specimens. The dielectric constant has been measured down to 4 K, giving results...
2003 / R.N. Hampton, G.A. Saunders, A.M. Stoneham -
Resolving the reactor neutrino anomaly with the KATRIN neutrino experiment
Abstract The KArlsruhe TRItium Neutrino experiment (KATRIN) combines an ultra-luminous molecular tritium source with an integrating high-resolution spectrometer to gain sensitivity to the absolute mass scale of neutrinos. The projected sensitivity...
2011 / J.A. Formaggio, J. Barrett -
Direct search for low mass dark matter particles with CCDs
Abstract A direct dark matter search is performed using fully-depleted high-resistivity CCD detectors. Due to their low electronic readout noise (R.M.S. ∼7 eV) these devices operate with a very low detection threshold of 40 eV, making the search for ...
2012 / J. Barreto, H. Cease, H.T. Diehl, J. Estrada, B. Flaugher, et al. -
Nuclear coherent population transfer with X-ray laser pulses
Abstract Coherent population transfer between nuclear states using X-ray laser pulses is studied. The laser pulses drive two nuclear transitions between three nuclear states in a setup reminding of stimulated Raman adiabatic passage used for atomic...
2011 / Wen-Te Liao, Adriana Pálffy, Christoph H. Keitel