英国物理学会
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作者:Gamal G. L. Nashed
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:A tetrad field with two unknown functions of the radial coordinate and an angle Φ (the polar angle ϕ times a function of the radial coordinate), is applied to the field equation of the modified theory of gravity. An exact vacuum solution is derived; its scalar torsion, , is ...
作者:Sumesh P. Thampi , Ramin Golestanian , Julia M. Yeomans
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:We study a continuum model of an extensile active nematic to show that mesoscale turbulence develops in two stages: i) ordered regions undergo an intrinsic hydrodynamic instability generating walls, lines of strong bend deformations; ii) the walls relax by forming oppositely char...
作者:L. Basso , O. Fischer , J. J. van der Bij
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:In the light of the recent LHC data, we study precision tests sensitive to the violation of lepton universality, in particular the violation of unitarity in neutrino mixing. Keeping all data we find no satisfactory fit, even allowing for violations of unitarity in neutrino mixing...
作者:Jean Toulouse , L. Cai , R. K. Pattnaik ...
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:The multiscale dynamics of complex oxides is illustrated by pairs of mechanical resonances that are excited in the relaxor ferroelectric K1− x Li x TaO3 (KLT). These macroscopic resonances are shown to originate in the collective dynamics of ...
作者:Sunil K. Mishra , Arul Lakshminarayan
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:The Ising model with a pulsed transverse and a continuous longitudinal field is studied. Starting from a large transverse field and a state that is nearly an eigenstate, the pulsed transverse field is quenched with a simultaneous enhancement of the longitudinal field. The generat...
作者:R. Alvarez , J. Cotrino , A. Palmero
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:The framework to describe the out-of-equilibrium free electrons in cold plasmas is developed assuming the electron entropy is defined through the Boltzmann H-theorem. Our theory explains why the Saha-Boltzmann relation among higher-lying excited states by means of the electron ki...
作者:M. P. Silverman
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (2)IOP
摘要:A remarkable method for measuring half-lives of radioactive nuclei was proposed several years ago that entailed statistical sampling of the source activity. A histogram of half-life estimates, calculated from pairs of activity measurements separated in time, took the unexpec...
作者:Rajeev Singh , Subinay Dasgupta , Sitabhra Sinha
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:In many complex systems, heterogeneous connections can subject constituent elements to conflicting influences, resulting in frustration. Here we show numerically that an initially frustrated system can achieve structural balance by a link adaptation process inspired by Hebb's pri...
作者:Y. A. Ussenov , T. S. Ramazanov , K. N. Dzhumagulova ...
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:This paper presents the results of the analysis of the experimentally measured width of the dust-free region around a single electric probe in a dusty plasma of glow discharge. The experimental results were compared with the data of a theoretical study on the basis of the balance...
作者:Yi-Xiang Wang , Fu-Xiang Li , Ya-Min Wu
来源:[J].EPL (Europhysics Letters)(IF 2.26), 2014, Vol.105 (1)IOP
摘要:Haldane model can realize the anomalous quantum Hall effect (QHE) without Landau levels (LLs) and serves as a prototype of the quantum spin Hall effect. In this paper, we study the QHE of Haldane model under magnetic field with magnitude such that the magnetic flux in a plaquette...

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