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Glass transition in the quenched and annealed version of the frustrated lattice gas model 受挫晶格气体模型的淬火和退火版本的玻璃化转变
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.7715
Fierro, de Candia A, Coniglio
{"title":"Glass transition in the quenched and annealed version of the frustrated lattice gas model","authors":"Fierro,&nbsp;de Candia A,&nbsp;Coniglio","doi":"10.1103/physreve.62.7715","DOIUrl":"https://doi.org/10.1103/physreve.62.7715","url":null,"abstract":"<p><p>In this paper we study the three-dimensional frustrated lattice gas model in the annealed version, where the disorder is allowed to evolve in time with a suitable kinetic constraint. Although the model does not exhibit any thermodynamic transition it shows a diverging peak at some characteristic time in the dynamical nonlinear susceptibility, similar to the results on the p-spin model in mean field and the Lennard-Jones mixture recently found by Donati et al. (e-print cond-mat/9905433). Comparing these results to those obtained in the model with quenched interactions, we conclude that the critical behavior of the dynamical susceptibility is reminiscent of the thermodynamic transition present in the quenched model, and signaled by the divergence of the static nonlinear susceptibility, suggesting therefore a similar mechanism also in supercooled glass-forming liquids.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt A","pages":"7715-22"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.7715","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21960123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Critical fluctuations at the untilted-tilted phase transition in chiral smectic liquid crystals 手性近晶液晶中未倾斜相变的临界波动
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.r7599
Shibahara, Yamamoto, Takanishi, Ishikawa, Takezoe
{"title":"Critical fluctuations at the untilted-tilted phase transition in chiral smectic liquid crystals","authors":"Shibahara,&nbsp;Yamamoto,&nbsp;Takanishi,&nbsp;Ishikawa,&nbsp;Takezoe","doi":"10.1103/physreve.62.r7599","DOIUrl":"https://doi.org/10.1103/physreve.62.r7599","url":null,"abstract":"<p><p>The layer compression modulus B was measured near the Sm-A-Sm-C* and Sm-A-Sm-C(*)(A) transitions of chiral smectic liquid crystals. B shows a marked pretransitional softening due to the order parameter fluctuations above the phase transition. The width of the critical region of the Sm-A-Sm-C* and Sm-A-Sm-C(*)(A) transitions is smaller than that of the Sm-A-Sm-C(*)(alpha) transition. The critical exponents of B are in agreement with the theoretical description based on renormalization-group method. These results reveal that these transitions are not of the Landau mean-field type.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt A","pages":"R7599-602"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.r7599","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21960125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Wetting-driven structure formation of a binary mixture in the presence of a mobile particle pinning potential 在移动粒子钉住电位存在下，二元混合物的润湿驱动结构形成
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.8207
Ma
{"title":"Wetting-driven structure formation of a binary mixture in the presence of a mobile particle pinning potential","authors":"Ma","doi":"10.1103/physreve.62.8207","DOIUrl":"https://doi.org/10.1103/physreve.62.8207","url":null,"abstract":"<p><p>We investigate the pattern formation on the solid substrate of phase-separating films containing mobile wetting particles with a preferential attraction for one component of the mixtures. The presence of mobile particles under the surface-particle interaction modulation breaks the isotropy of the bulk phase-separating process, leading to the formation of orientational structure due to the interplay between phase separation and wetting particle ordering under a modulated pinning potential at the late stage. Simulations suggest that the phase-separation morphology can be changed through the adjustment of the wettable-phase-particle interaction and the surface-particle interaction. It provides some important insights into this \"wetting-directed spinodal decomposition.\"</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt B","pages":"8207-11"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.8207","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21960134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Power law distributions of burst duration and interburst interval in the solar wind: turbulence or dissipative self-organized criticality? 太阳风爆发持续时间和爆发间隔的幂律分布:湍流还是耗散自组织临界?
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.8794
Freeman, Watkins, Riley
{"title":"Power law distributions of burst duration and interburst interval in the solar wind: turbulence or dissipative self-organized criticality?","authors":"Freeman,&nbsp;Watkins,&nbsp;Riley","doi":"10.1103/physreve.62.8794","DOIUrl":"https://doi.org/10.1103/physreve.62.8794","url":null,"abstract":"<p><p>We calculate the probability density functions P of burst energy e, duration T, and interburst interval tau for a known turbulent system in nature. Bursts in the Earth-Sun component of the Poynting flux at 1 AU in the solar wind were measured using the MFI and SWE experiments on the NASA WIND spacecraft. We find P(e) and P(T) to be power laws, consistent with self-organized criticality (SOC). We find also a power-law form for P(tau) that distinguishes this turbulent cascade from the exponential P(tau) of ideal SOC, but not from some other SOC-like sandpile models. We discuss the implications for the relation between SOC and turbulence.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt B","pages":"8794-7"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.8794","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21960135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 49
Surface and flexoelectric polarization in a nematic liquid crystal directly measured by a pyroelectric technique 用热释电技术直接测量向列液晶的表面和挠曲电极化
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.8091
Blinov, Barnik, Ozaki, Shtykov, Yoshino
{"title":"Surface and flexoelectric polarization in a nematic liquid crystal directly measured by a pyroelectric technique","authors":"Blinov,&nbsp;Barnik,&nbsp;Ozaki,&nbsp;Shtykov,&nbsp;Yoshino","doi":"10.1103/physreve.62.8091","DOIUrl":"https://doi.org/10.1103/physreve.62.8091","url":null,"abstract":"<p><p>An alternative, pyroelectric effect based technique was developed for the direct measurement of the surface polarization in homogeneously and homeotropically oriented nematic cells as well as for the measurement of the flexoelectric polarization in hybrid aligned nematic cells. The pyroelectric response was measured with a modulated beam of a diode laser, absorbed by a dye incorporated in a standard liquid crystal 4-pentyl- 4(')-cyanobiphenyl. The dye provided a gradient of the temperature increment along the cell normal, which allowed for the separation of pyroelectric contributions from both the opposite surfaces and the bulk. The signs and absolute magnitude of the polarizations mentioned have been found over the entire temperature range of the nematic phase.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt A","pages":"8091-9"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.8091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21960247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Effective viscosity of dense colloidal crystals 致密胶体晶体的有效粘度
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.8212
Hofman, Clercx, Schram
{"title":"Effective viscosity of dense colloidal crystals","authors":"Hofman,&nbsp;Clercx,&nbsp;Schram","doi":"10.1103/physreve.62.8212","DOIUrl":"https://doi.org/10.1103/physreve.62.8212","url":null,"abstract":"<p><p>An exact scheme is presented to determine the effective viscosity tensor for periodic arrays of hard spherical particles suspended in a Newtonian fluid. In the highly symmetric case of cubic lattices this tensor is characterized by only two parameters. These parameters are calculated numerically for the three cubic lattice types and for the whole range of volume fractions. The correctness of the present method and its numerical implementation is confirmed by a comparison with the numerical and analytical results known from the literature. Some regular terms are determined that enter singular perturbation expansions suitable for high concentrations. Previous results for these terms are shown to be highly inaccurate. The modified expansions approach the exact numerical results over a range of densities extending to relatively low concentrations. The effective viscosity is examined for simple tetragonal (st) lattices and the results for various structures of the st type can be qualitatively understood on the basis of the motion of the spheres in response to the ambient shear flow. The angular velocity of the spheres-relative to the shear flow-is shown to be nonzero for certain orientations of the st lattice with respect to the shear flow, in contrast to what has been known for cubic arrays. Finite viscosities are found in most cases where the particles are in contact as they are allowed to move in either rigid planar or linelike structures, or they can perform a smooth rolling motion. The only occurrence where the viscosity diverges for a st structure, or equally any other Bravais lattice, is for the case of close packing. Moreover, the concentration-dependent shear viscosity is determined for a variety of microstructures and the results are compared with recent data obtained from experiments on ordered hard-sphere suspensions.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt B","pages":"8212-33"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.8212","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21960679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Aging in a filled polymer: coherent small angle x-ray and light scattering 填充聚合物的老化:相干小角x射线和光散射
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.8308
Geissler, Hecht, Rochas, Bley, Livet, Sutton
{"title":"Aging in a filled polymer: coherent small angle x-ray and light scattering","authors":"Geissler,&nbsp;Hecht,&nbsp;Rochas,&nbsp;Bley,&nbsp;Livet,&nbsp;Sutton","doi":"10.1103/physreve.62.8308","DOIUrl":"https://doi.org/10.1103/physreve.62.8308","url":null,"abstract":"<p><p>Measurements are described using small angle coherent x-ray scattering and small angle dynamic light scattering of motion in fumed silica aggregates suspended in a poly(dimethyl siloxane) melt. At rest, this system develops weakly bound superstructures that are disrupted by mechanical stirring or thermal treatment. The observed relaxation rates correspond to a combination of liquidlike diffusion and a structural relaxation (flocculation) whereby the diffusing silica aggregates recombine into larger agglomerates at long times. Both processes are diffusion controlled. Two samples are investigated. The first, in which the silica is hydrophilic, is a highly viscous liquid for which the respective rate coefficients are about 5x10(-14) cm(2) s(-1) and 2x10(-15) cm(2) s(-1). The second sample, in which the silica surface is hydrophobic, is a thixotropic paste. The same aging mechanism in the diffusion is also observed, but with much slower rate constants, 2x10(-15) cm(2) s(-1) and 9x10(-16) cm(2) s(-1), respectively.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt B","pages":"8308-13"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.8308","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21960688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Mean-field fluid behavior of the gaussian core model 高斯核模型的平均场流体行为
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.7961
Louis, Bolhuis, Hansen
{"title":"Mean-field fluid behavior of the gaussian core model","authors":"Louis,&nbsp;Bolhuis,&nbsp;Hansen","doi":"10.1103/physreve.62.7961","DOIUrl":"https://doi.org/10.1103/physreve.62.7961","url":null,"abstract":"<p><p>We show that the Gaussian core model of particles interacting via a penetrable repulsive Gaussian potential, first considered by Stillinger [J. Chem. Phys. 65, 3968 (1976)], behaves as a weakly correlated \"mean-field fluid\" over a surprisingly wide density and temperature range. In the bulk, the structure of the fluid phase is accurately described by the random phase approximation for the direct correlation function, and by the more sophisticated hypernetted chain integral equation. The resulting pressure deviates very little from a simple mean-field-like quadratic form in the density, while the low density virial expansion turns out to have an extremely small radius of convergence. Density profiles near a hard wall are also very accurately described by the corresponding mean-field free-energy functional. The binary version of the model exhibits a spinodal instability against demixing at high densities. Possible implications for semidilute polymer solutions are discussed.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt A","pages":"7961-72"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.7961","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21961027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 200
Helically symmetric astrophysical jets 螺旋对称的天体物理喷流
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.8616
Bogoyavlenskij
{"title":"Helically symmetric astrophysical jets","authors":"Bogoyavlenskij","doi":"10.1103/physreve.62.8616","DOIUrl":"https://doi.org/10.1103/physreve.62.8616","url":null,"abstract":"<p><p>Astrophysical jets are modeled outside of their accretion disks by the helically symmetric MHD equilibria. The derived equilibria are smooth, have no current sheets, and no discontinuities. The obtained exact solutions to the MHD equilibrium equations generalize the Chandrasekhar equipartition solution and depend upon two arbitrary functions, alpha(psi) and the plasma density rho(psi)>/=0, and 2K+2 arbitrary parameters gamma,a(N),a(mn),b(mn). The total kinetic and magnetic energy of the jet and its mass are finite in any layer c(1)<z<c(2). In view of a rapid decreasing of the magnetic field B in the transversal direction, the modeled jets are highly collimated.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt B","pages":"8616-27"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.8616","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21961041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
Anomalous scaling in depinning transitions 脱屑转变中的异常标度
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Pub Date : 2000-12-01 DOI: 10.1103/physreve.62.r7563
Narayan
{"title":"Anomalous scaling in depinning transitions","authors":"Narayan","doi":"10.1103/physreve.62.r7563","DOIUrl":"https://doi.org/10.1103/physreve.62.r7563","url":null,"abstract":"<p><p>It is demonstrated that the renormalization group (RG) flows of depinning transitions do not depend on whether the driving force or the system velocity is kept constant. This allows for a comparison between RG results and corresponding self-organized critical models. However, close to the critical point, scaling functions cross over to forms that can have singular behavior not seen in equilibrium thermal phase transitions. These can be different for the constant force and constant velocity driving modes, leading to different apparent critical exponents. This is illustrated by comparing extremal dynamics for interface depinning with RG results, deriving the change in apparent exponents. Thus, care has to be exercised in such comparisons.</p>","PeriodicalId":20079,"journal":{"name":"Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics","volume":"62 6 Pt A","pages":"R7563-6"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physreve.62.r7563","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21958999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
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