Physical sciences topic list of research papers
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A thermal graviton background from extra dimensions
Abstract Inflationary cosmology predicts a low-amplitude graviton background across a wide range of frequencies. This Letter shows that if one or more extra dimensions exist, the graviton background may have a thermal spectrum instead, dependent on...
2005 / E.R. Siegel, J.N. Fry -
The effect of dynamical parton recombination on event-by-event observables
Abstract Within a dynamical quark recombination model, we explore various proposed event-by-event observables sensitive to the microscopic structure of the QCD-matter created at RHIC energies. Charge ratio fluctuations, charge transfer fluctuations...
2007 / Stephane Haussler, Stefan Scherer, Marcus Bleicher -
Novel NN interaction and the spectroscopy of light nuclei
Abstract Nucleon–nucleon (NN) phase shifts and the spectroscopy of A ⩽ 6 nuclei are successfully described by an inverse scattering potential that is...
2005 / A.M. Shirokov, J.P. Vary, A.I. Mazur, S.A. Zaytsev, T.A. Weber -
Non-unitary neutrino mixing and CP violation in the minimal inverse seesaw model
Abstract We propose a simplified version of the inverse seesaw model, in which only two pairs of the gauge-singlet neutrinos are introduced, to interpret the observed neutrino mass hierarchy and lepton flavor mixing at or below the TeV scale. This...
2009 / Michal Malinský, Tommy Ohlsson, Zhi-zhong Xing, He Zhang -
A dispersion relation for the pion-mass dependence of hadron properties
Abstract We present a dispersion relation in the pion-mass squared, which static quantities (nucleon mass, magnetic moment, etc.) obey under the assumption of analyticity in the entire complex m ...
2010 / Tim Ledwig, Vladimir Pascalutsa, Marc Vanderhaeghen -
Anomalous single production of the fourth generation neutrino at future ep colliders
Abstract Possible single productions of the fourth standard model generation neutrino via anomalous interactions at the future ep colliders are studied. Signatures of such anomalous processes and backgrounds are discussed in detail. Discovery limits ...
2008 / A.K. Çiftçi, R. Çiftçi, S. Sultansoy -
Holographic dark energy in Brans–Dicke theory
Abstract In this Letter it is shown that when the holographic dark energy is combined with the Brans–Dicke field equations the transition from decelerated to accelerated expansion of the Universe can be more easily accounted for than when resort to...
2007 / Narayan Banerjee, Diego Pavón -
Time-dependent supergravity solutions in null dilaton background
Abstract A class of time dependent pp-waves with NS–NS flux in type IIA string theory is considered. The background preserves 1/4 supersymmetry and may provide a toy model of Big Bang cosmology with nontrivial flux. At the Big Bang singularity in...
2006 / Rashmi R. Nayak, Kamal L. Panigrahi, Sanjay Siwach -
Loop quantum cosmology and slow roll inflation
Abstract In loop quantum cosmology (LQC) the big bang is replaced by a quantum bounce which is followed by a robust phase of super-inflation. Rather than growing unboundedly in the past, the Hubble parameter vanishes at the bounce and attains a...
2010 / Abhay Ashtekar, David Sloan -
Does strong heterogeneity promote cooperation by group interactions?2011 / Matjaž Perc
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Continuous-time quantum impurity solvers
Abstract We present a brief overview of two continuous–time quantum Monte Carlo impurity solvers–a diagrammatic expansion of the partition function in the interaction and in the impurity-bath hybridization and mention a recently developed...
2010 / Emanuel Gull, Philipp Werner, Andrew Millis, Matthias Troyer -
Mathematica program for extracting one-turn Lie generator map. application of TPSA2008 / Dobrin Kaltchev
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Closed-loop Control of Laser Power using the Full Penetration Hole Image Feature in Aluminum Welding Processes
Abstract In contrast to other welding methods, laser beam welding still suffers from a lack of established quality control or even closedloop control systems in industrial production. One promising solution is the observation of the image feature...
2011 / A. Blug, D. Carl, H. Höfler, F. Abt, A. Heider, et al. -
Biological tissues imaging with time domain topological energy
Abstract Time Domain Topological Energy (TDTE) is a new imaging method that comes from the field of shape optimisation under constraints. The adjoint problem in time domain shows a link with the refocusing properties of time reversal, giving thus an ...
2010 / Perrine Sahuguet, Agathe Chouippe, Vincent Gibiat -
A high temperature neutron diffraction study of the double perovskite Ba2154SmMoO6
Abstract Ba2LnMoO6 double perovskites have been recently shown to display a wide range of interesting magnetic and structural properties; Ba2 154SmMoO6 exhibits simultaneous antiferromagnetic order and a Jahn–Teller distortion....
2012 / Thomas K. Wallace, Clemens Ritter, Abbie C. Mclaughlin -
Wavelength effects in microwave acoustic resonance2002 / A.M. Stoneham
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Spherical null geodesics of rotating Kerr black holes
Abstract The non-equatorial spherical null geodesics of rotating Kerr black holes are studied analytically. Unlike the extensively studied equatorial circular orbits whose radii are known analytically, no closed-form formula exists in the literature ...
2012 / Shahar Hod -
Worldsheet S-matrix of β-deformed SYM
Abstract We compute perturbative worldsheet S-matrix elements in the bosonic sector for β-deformed AdS/CFT in strong and weak ʼt Hooft coupling limits and compare with the exact S-matrix. For our purpose we take near BMN limit of TsT-transformed ...
2013 / Changrim Ahn, Minkyoo Kim, Bum-Hoon Lee -
Recrystallization of amorphous nanotracks and uniform layers generated by swift-ion-beam irradiation in lithium niobate2011 / M. L. Crespillo, O. Caballero-Calero, V. Joco, A. Rivera, P. Herrero, et al.
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Splitting Potential and the Poincaré-Melnikov Method for Whiskered Tori in Hamiltonian Systems2002 / A. Delshams, P. Gutiérrez