日本物理学会
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作者:Takahiro Murashima , Hiroshi Takano
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2017, Vol.86 (12)JPS
摘要:We proposed a thinning approximation (TA) for estimation of the two-dimensional (2D) wide-angle scattering patterns from Kremer–Grest polymer melts under shear. In the TA, extra particles are inserted at the middle of bonds for fine-graining of the coarse-grained polymers. F...
作者:Katsumi Hagita , Takahiro Murashima
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2020, Vol.89 (2)JPS
摘要:We proposed a general method for efficiently recording trajectories of states for analyzing the time correlation functions (TCFs) A ( t ) of arbitrary quantities from short to long times, for computer simulations, to reproduce dynamic behaviors. If the quantities for TCF are...
作者:Takahiro Murashima , Takashi Taniguchi
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2012, Vol.81 (Suppl.A)JPS
摘要:Polymer melts exhibit flow-history-dependent behavior. To clearly show this behavior, we have investigated the flow behavior of an entangled polymer melt around two cylinders placed in tandem along the flow direction in a two-dimensional periodic system. In this system, polymer s...
作者:Takahiro Murashima , Shugo Yasuda ...
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2012, Vol.82 (1)JPS
摘要:Multiscale simulation methods have been developed based on the local stress sampling strategy and applied to three flow problems with different difficulty levels: (a) general flow problems of simple fluids, (b) parallel (one-dimensional) flow problems of polymeric liquids, and (c...
作者:Takahiro Murashima , Keigo Hijii ...
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2005, Vol.74 (5), pp.1544-1551JPS
摘要:The one dimensional S =1 XXZ model with next-nearest-neighbor interaction α and Ising-type anisotropy Δ is studied by using a numerical diagonalization technique. We discuss the ground state phase diagram of this model numerically by the twisted-boundary-condition level spec...

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