Physical sciences topic list of research papers
-
Massive relativistic particle models with bosonic counterpart of supersymmetry
Abstract We consider the massive relativistic particle models on four-dimensional Minkowski space extended by N commuting Weyl spinors for N = 1 and ...
2005 / Sergey Fedoruk, Jerzy Lukierski -
Color fluctuation approximation for multiple interactions in leading twist theory of nuclear shadowing
Abstract The leading twist theory of nuclear shadowing predicts the shadowing correction to nuclear parton distributions at small x by connecting it to the leading twist hard diffraction in electron–nucleon scattering. The uncertainties of the...
2010 / V. Guzey, M. Strikman -
New infrared cut-off for the holographic scalar fields models of dark energy
Abstract Introducing a new infrared cut-off for the holographic dark-energy, we study the correspondence between the quintessence, tachyon, K-essence and dilaton energy density with this holographic dark energy density in the flat FRW universe. This ...
2008 / L.N. Granda, A. Oliveros -
Quantum lift of non-BPS flat directions
Abstract We study N = 2 , d = 4 attractor equations for the...
2009 / S. Bellucci, S. Ferrara, A. Marrani, A. Shcherbakov -
Moduli stabilization in stringy ISS models
Abstract We present a stringy realization of the ISS metastable SUSY breaking model with moduli stabilization. The mass moduli of the ISS model is stabilized by gauging of a U ( ...
2008 / Yu Nakayama, Masahito Yamazaki, T.T. Yanagida -
On nonlinear higher spin curvature
Abstract We present the first nonlinear term of the higher spin curvature which is covariant with respect to deformed gauge transformations that are linear in the field. We consider the case of spin 3 after presenting spin 2 as an example, and then...
2011 / Ruben Manvelyan, Karapet Mkrtchyan, Werner Rühl, Murad Tovmasyan -
A bulk inflaton from large-volume extra dimensions
Abstract The universe may have extra spatial dimensions with large volume that we cannot perceive because the energy required to excite modes in the extra directions is too high. Many examples are known of manifolds with a large volume and a large...
2010 / Brian Greene, Daniel Kabat, Janna Levin, Dylan Thurston -
sQGP as hCFT
Abstract We examine the proposal to make quantitative comparisons between the strongly coupled quark–gluon plasma and holographic descriptions of conformal field theory. In this Letter, we calculate corrections to certain transport coefficients...
2009 / Alex Buchel, Michal P. Heller, Robert C. Myers -
A cavity experiment to search for hidden sector photons
Abstract We propose a cavity experiment to search for low mass extra U(1) gauge bosons with gauge-kinetic mixing with the ordinary photon, so-called paraphotons. The setup consists of two microwave cavities shielded from each other. In one cavity,...
2007 / Joerg Jaeckel, Andreas Ringwald -
Palatini formulation of modified gravity with lnR terms
Abstract Recently, corrections to the standard Einstein–Hilbert action are proposed to explain the current cosmic acceleration instead of introducing dark energy. We discuss the Palatini formulation of the modified gravity with a lnR term suggested...
2004 / Xin-He Meng, Peng Wang -
Non-perturbative renormalisation and improvement of the local vector current for quenched and unquenched Wilson fermions
Abstract By considering the local vector current between nucleon states and imposing charge conservation, we determine its renormalisation constant and quark mass improvement coefficient for Symanzik O(a) improved Wilson fermions. The computation is ...
2003 / T Bakeyev, M Göckeler, R Horsley, D Pleiter, P.E.L Rakow, et al. -
Is Hilbert space discrete?
Abstract We show that discretization of spacetime naturally suggests discretization of Hilbert space itself. Specifically, in a universe with a minimal length (for example, due to quantum gravity), no experiment can exclude the possibility that...
2005 / Roman V. Buniy, Stephen D.H. Hsu, A. Zee -
Neutrino lumps in quintessence cosmology
Abstract Neutrinos interacting with the quintessence field can trigger the accelerated expansion of the Universe. In such models with a growing neutrino mass the homogeneous cosmological solution is often unstable to perturbations. We present...
2008 / N. Brouzakis, N. Tetradis, C. Wetterich -
Back-door fine-tuning in supersymmetric low scale inflation
Abstract Low scale inflation has many virtues and it has been claimed that its natural realisation in the supersymmetric Standard Model can be achieved rather easily. In this Letter we demonstrate that the dynamics of the hidden sector responsible...
2007 / Z. Lalak, K. Turzyński -
Non-cyclic phase for 4-flavor neutrino oscillation
Abstract The non-cyclic phase for neutrino oscillation is calculated, taking into consideration a possible 4th sterile flavor. This extends the results derived in the paper by Xiang-Bin Wang et al. [X.-B. Wang, L.C. Kwek, Y. Liu, C.H. Oh, Phys. Rev. ...
2007 / Z.Y. Law, A.H. Chan, C.H. Oh -
Subleading critical exponents from the renormalisation group
Abstract We study exact renormalisation group equations for the 3d Ising universality class. At the Wilson–Fisher fixed point, symmetric and antisymmetric correction-to-scaling exponents are computed with high accuracy for an optimised cutoff to...
2003 / Daniel F. Litim, Lautaro Vergara -
Secular effects on inflation from one-loop quantum gravity
Abstract In this Letter we revisit and extend a previous analysis where the possible relevance of quantum gravity effects in a cosmological setup was studied. The object of interest are non-local (logarithmic) terms generated in the effective action ...
2008 / J.A. Cabrer, D. Espriu -
Half-lives of ground and isomeric states in 97Cd and the astrophysical origin of 96Ru
Abstract First experimental evidence for a high-spin isomer ( 25 / 2 + ) in...
2011 / G. Lorusso, A. Becerril, A. Amthor, T. Baumann, D. Bazin, et al. -
Spin bits at two loops
Abstract We consider the super-Yang–Mills/spin system map to construct the SU ( 2 ) spin bit model at the level of two loops in...
2004 / S. Bellucci, P.-Y. Casteill, A. Marrani, C. Sochichiu -
Wilson mass dependence of the overlap topological charge density
Abstract The dependence of the overlap Dirac operator on the Wilson-mass regulator parameter is studied through calculations of the overlap topological charge densities at a variety of Wilson-mass values, using a Lüscher–Weisz gauge action. In this...
2010 / Peter J. Moran, Derek B. Leinweber, J.B. Zhang