Physical sciences topic list of research papers
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Magnetoelectric effect and phase transitions in CuO in external magnetic fields2016 / Zhaosheng Wang, Navid Qureshi, Shadi Yasin, Alexander Mukhin, Eric Ressouche, et al.
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Matrix at strong coupling
Abstract We describe the strong coupling limit ( g → ∞ ) for the Yang–Mills type matrix models. In this limit the dynamics of the model is reduced to one of ...
2005 / Corneliu Sochichiu -
Dark matter before the LHC in a natural supersymmetric standard model
Abstract We show that the solid lower bound of about 10 −44 cm ...
2005 / Ryuichiro Kitano, Yasunori Nomura -
Constraints on holographic dark energy from X-ray gas mass fraction of galaxy clusters
Abstract We use the Chandra measurements of the X-ray gas mass fraction of 26 rich clusters released by Allen et al. to perform constraints on the holographic dark energy model. The constraints are consistent with those from other cosmological...
2005 / Zhe Chang, Feng-Quan Wu, Xin Zhang -
An expanding locally anisotropic (ELA) metric describing matter in an expanding universe
Abstract It is suggested an expanding locally anisotropic metric (ELA) ansatz describing matter in a flat expanding universe which interpolates between the Schwarzschild (SC) metric near point-like central bodies of mass M and the Robertson–Walker...
2010 / P. Castelo Ferreira -
Lorentz-invariant ensembles of vector backgrounds
Abstract We consider gauge field theories in the presence of ensembles of vector backgrounds. While Lorentz invariance is explicitly broken in the presence of any single background, here, the Lorentz invariance of the theory is restored by averaging ...
2005 / Dennis D. Dietrich, Stefan Hofmann -
E1 strength of the subthreshold 3/2+ state in 15O studied by Coulomb excitation
Abstract The radiative width of the 3/2+ state at 6.793 MeV in 15O has been experimentally determined to be Γ γ =0.95+0.60 −0.95 eV by intermediate-energy...
2003 / K. Yamada, T. Motobayashi, H. Akiyoshi, N. Aoi, Zs. Fülöp, et al. -
Inclusion of Yang–Mills fields in string corrected supergravity
Abstract We consistently incorporate Yang–Mills matter fields into string corrected (deformed) D = 10 , N ...
2008 / S. Bellucci, D. O'Reilly -
Cross-section fluctuations in chaotic scattering
Abstract For the theoretical prediction of cross-section fluctuations in chaotic scattering, the cross-section autocorrelation function is needed. That function is not known analytically. Using experimental data and numerical simulations, we show...
2010 / B. Dietz, H.L. Harney, A. Richter, F. Schäfer, H.A. Weidenmüller -
Low mass dilepton production at ultrarelativistic energies
Abstract Dilepton production in pp and Au + Au nucleus–nucleus collisions at s ...
2008 / E.L. Bratkovskaya, W. Cassing, O. Linnyk -
The strangeness form factors of the proton
Abstract The present empirical information on the strangeness form factors indicates that the corresponding u u d s ...
2006 / D.O. Riska, B.S. Zou -
The variation of the electromagnetic coupling and quintessence
Abstract The properties of quintessence are examined through the study of the variation of the electromagnetic coupling. We consider two simple quintessence models with a modified exponential potential and study the parameter space constraints...
2009 / M.C. Bento, R. González Felipe -
Stability properties of Q-stars
Abstract We present the evolution of Q-star configurations using numerical methods. We solve the full Einstein–Klein–Gordon system of equations and show that: Q-stars can be stable and unstable. The unstable branch is two fold: configurations with...
2007 / R. Becerril, A. Bernal, F.S. Guzmán, U. Nucamendi -
New method for reconstructing effective top quark spin
Abstract We propose a new method for reconstructing an effective spin direction of a semi-leptonically decayed top quark. The method is simple: for instance, it does not require the spin information of the antitop quark in a ...
2006 / Y. Sumino, S. Tsuno -
On the elliptical flow and mass asymmetry of the colliding nuclei
Abstract A study of elliptical flow is carried out for different mass asymmetries of colliding nuclei using the reactions of Cr 50 ...
2011 / Varinderjit Kaur, Suneel Kumar, Rajeev K. Puri -
KLT relations from the Einstein–Hilbert Lagrangian
Abstract The Kawai–Lewellen–Tye (KLT) relations derived from string theory tell us that perturbative gravity amplitudes are the “square” of the corresponding amplitudes in gauge theory. Starting from the light-cone Lagrangian for pure gravity we...
2007 / Sudarshan Ananth, Stefan Theisen -
Some conjectures on the limit of infinite Higgs mass
Abstract We consider a possible field theory candidate for the electroweak SU ( 2 ) ⊗ U ...
2005 / Ruggero Ferrari, Marco Picariello, Andrea Quadri -
Generalized second law of thermodynamics in quintom dominated universe
Abstract In this Letter we will investigate the validity of the generalized second law of thermodynamics for the quintom model of dark energy. Reviewing briefly the quintom scenario of dark energy, we will study the conditions of validity of the...
2006 / M.R. Setare -
Comment to: “Fine structure constant in the spacetime of a cosmic string” [Phys. Lett. B 614 (2005) 140]
Abstract In the paper [F. Nasseri, Phys. Lett. B 614 (2005) 140–142], F. Nasseri shows that the value of the fine structure constant reduces due to the presence of a cosmic string. In this comment I want to point out that this conclusion is not...
2005 / E.R. Bezerra de Mello -
The hexagon Wilson loop and the BDS ansatz for the six-gluon amplitude
Abstract As a test of the gluon scattering amplitude/Wilson loop duality, we evaluate the hexagonal light-like Wilson loop at two loops in N = 4 ...
2008 / J.M. Drummond, J. Henn, G.P. Korchemsky, E. Sokatchev