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The use of excessively long timesteps in dissipative particle dynamics simulations may produce simulation artifacts due to the generation of configurations which are not representative of the desired canonical ensemble. The configurational…

统计力学 · 物理学 2007-05-23 Michael P. Allen

The contribution to the low frequency internal friction and the thermal conductivity due to optically vibrating edge dislocation dipoles is calculated within the modified Granato-Lucke string model. The results are compared with the recent…

无序系统与神经网络 · 物理学 2009-11-10 D. V. Churochkin , S. Sahling , V. A. Osipov

High obscuration of background stars behind dark clouds precludes the detection of optical diffuse interstellar bands (DIBs) and hence our knowledge of DIB carriers in these environments. Taking advantage of the reduced obscuration of…

星系天体物理 · 物理学 2017-09-20 M. Elyajouri , N. L. J. Cox , R. Lallement

Alkali metal lines are one of the most important key opacity sources for understanding exoplanetary atmospheres because the Na I resonance doublets are thought to be the cause of low albedo, as the alkali metal's wide line wings absorb…

地球与行星天体物理 · 物理学 2022-02-09 Kiyoe Kawauchi , Norio Narita , Bun'ei Sato , Yui Kawashima

Astronomical near-infrared Diffuse-Interstellar-Bands (DIBs) were characterized by pure carbon Fullerene and Graphene molecules comparing with laboratory experiment and with Time-Dependent Density-Functional-Theory (TD-DFT) analysis. It is…

星系天体物理 · 物理学 2024-05-02 Norio Ota

We searched for diffuse interstellar bands (DIBs) in the 0.91$<\lambda<$1.33 $\mu$m region by analyzing the near-infrared (NIR) high-resolution ($R=20,000$ and 28,000) spectra of 31 reddened early-type stars ($0.04<E(B-V)<4.58$) and an…

The use of dielectric barrier discharge (DBD) plasmas has become a practical way to carry out surface treatment and one seeks to do it in a more efficient way, which requires to have control of the plasma parameters like rotational and…

等离子体物理 · 物理学 2020-06-15 Fellype do Nascimento , Stanislav Moshkalev , Munemasa Machida

In this paper, a comprehensive examination of the temperature- and bias-dependent diffusion regimes of underdamped Brownian particles is presented. A temperature threshold for a transition between anomalous and normal diffusive behaviors is…

统计力学 · 物理学 2021-11-16 Trey Jiron , Marygrace Prinster , Jarrod Schiffbauer

Measuring the temperature and abundance patterns of clouds in the interstellar medium (ISM) provides an observational basis for models of the physical conditions within the clouds, which play an important role in studies of star and planet…

星系天体物理 · 物理学 2019-06-26 Nicholas Kruczek , Kevin France , Keri Hoadley , Brian Fleming , Nicholas Nell

The diffuse interstellar bands (DIBs) have remained a mystery in astronomy since their discovery over a century ago. The only currently known carrier is C$_{60}^+$ responsible for five DIBs, while more than 550 are yet to be interpreted.…

We report X-ray diffraction patterns and calculated electronic band structures of the Dirac line-nodal material CaSb$_2$ under pressure. Its superconducting transition temperature ($T_{\mathrm{c}}=1.7$ K) increases under pressure and…

We report on the magnetic penetration depth, lambda, in a type II superconductor NbB_{2+x} determined by muon spin rotation method. We show in the sample with x=0.1 that lambda at 2.0 K is independent of an applied magnetic field. This…

超导电性 · 物理学 2009-11-10 H. Takagiwa , S. Kuroiwa , M. Yamazawa , J. Akimitsu , K. Ohishi , A. Koda , W. Higemoto , R. Kadono

A comprehensive inelastic neutron scattering study of magnetic excitations in the near-optimally doped high-temperature superconductor ${\rm YBa_{2}Cu_{3}O_{6.85}}$ is presented. The spin correlations in the normal state are commensurate…

超导电性 · 物理学 2009-10-31 P. Bourges , Y. Sidis , H. F. Fong , L. P. Regnault , J. Bossy , A. Ivanov , B. Keimer

Context: There have been many attempts to identify families of diffuse interstellar bands (DIBs) with perfectly correlating band strengths. Although major efforts have been made to classify broadly based DIB families and important insights…

A survey for line profile variability in early A-type stars has been performed in order to detect nonradial pulsation signatures. The star HR 6139, with spectral type A2V and estimated T_eff=8800 K, shows evident line profile variations…

天体物理学 · 物理学 2009-11-11 E. Antonello , L. Mantegazza , M. Rainer , A. Miglio

The mechanism underlying charge transport in strongly correlated quantum systems, such as doped antiferromagnetic Mott insulators, remains poorly understood. Here we study the expansion dynamics of an initially localized hole inside a…

量子气体 · 物理学 2022-07-13 Lauritz Hahn , Annabelle Bohrdt , Fabian Grusdt

As a result of the search for the identity of the chromophores responsible for producing the diffuse interstellar bands, a comprehensive exposition of experimental data is presented, which implicates the following molecules- 1. The…

化学物理 · 物理学 2017-06-21 Fred M. Johnson

We study a warping instability of a geometrically thin, non-self-gravitating, circumbinary disk around young binary stars on an eccentric orbit. Such a disk is subject to both the tidal torques due to a time-dependent binary potential and…

地球与行星天体物理 · 物理学 2015-06-23 Kimitake Hayasaki , Bong Won Sohn , Atsuo T. Okazaki , Taehyun Jung , Guangyao Zhao , Tsuguya Naito

The dipole-bound excited state of the methylene nitrile anion (CH2CN-) has been suggested as a candidate carrier for a diffuse interstellar band (DIB) at 803.8 nm. Its corresponding radical has been detected in the interstellar medium…

化学物理 · 物理学 2015-06-16 Ryan C. Fortenberry