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Logarithmic finite-size scaling of the O($n$) universality class at the upper critical dimensionality ($d_c=4$) has a fundamental role in statistical and condensed-matter physics and important applications in various experimental systems.…

统计力学 · 物理学 2021-04-13 Jian-Ping Lv , Wanwan Xu , Yanan Sun , Kun Chen , Youjin Deng

The extended Falicov-Kimball model is analyzed exactly for finite temperatures ($T\geq0$) in the limit of large dimensions. Onsite and intersite density-density interactions $U$ and $V$ are included in the model. Using the dynamical mean…

强关联电子 · 物理学 2019-06-26 Konrad Jerzy Kapcia , Romuald Lemański , Stanisław Robaszkiewicz

We study the intermittent dynamics and the fluctuations of the dynamic correlation function of a simple aging system. Given its size $L$ and its coherence length $\xi$, the system can be divided into $N$ independent subsystems, where…

无序系统与神经网络 · 物理学 2016-08-31 Estelle Pitard

We present a number of exact relations for the heavy quark limit and develop an analytical 1/m_Q expansion for heavy mesons in the 't Hooft model. Among the new results are relation 3\mu_\pi^2=\bar\Lambda^2 - m_{sp}^2+\beta^2, 1/m_Q…

高能物理 - 唯象学 · 物理学 2009-10-31 Matthias Burkardt , Nikolai Uraltsev

Cubic spinel Li$_{\rm 1+x}$Ti$_2$O$_4$ is a promising electrode material as it exhibits a high lithium diffusivity and undergoes minimal changes in lattice parameters during lithiation and delithiation, thereby ensuring favorable…

We investigate density fluctuations in a liquid close to a solvophobic substrate at which a surface critical drying transition occurs. Using classical density functional theory, we determine three measures of the spatial extent and strength…

统计力学 · 物理学 2022-04-20 Mary K. Coe , Robert Evans , Nigel B. Wilding

We present measurements of the thermal resistivity $\rho(t,P,L)$ near the superfluid transition of $^4$He at saturated vapor pressure and confined in cylindrical geometries with radii $L=0.5$ and 1.0 $\mu$m ($t\equiv T/T_\lambda(P) - 1$).…

凝聚态物理 · 物理学 2009-11-07 Daniel Murphy , Edgar Genio , Guenter Ahlers , Fengchuan Liu , Yuanming Liu

Shock modelling predicts an electron density enhancement within the magnetic precursor of C-shocks. Previous observations of SiO, H13CO+, HN13C and H13CN toward the young L1448-mm outflow showed an over-excitation of the ion fluid that was…

We have studied the superfluid density $\rho_{s}$ on various size-lattices in the geometry $L \times L \times H$ by numerical simulation of the $x-y$ model using the Cluster Monte Carlo method. Applying the Kosterlitz-Thouless-Nelson…

凝聚态物理 · 物理学 2009-10-22 N. Schultka , E. Manousakis

On the basis of a hydrodynamical model analogous to that in critical fluids, we investigate the influences of shear flow upon the electrostatic contribution to the viscosity of binary electrolyte solutions in the Debye-H\"{u}ckel…

统计力学 · 物理学 2007-05-23 Hirofumi Wada

We investigated Tsallis holographic dark energy (THDE) model in light of modern observations of supernovae, Hubble parameter measurements, data for baryon acoustic oscillations and fluctuations of matter density. The dark energy density for…

宇宙学与河外天体物理 · 物理学 2024-10-02 Artyom V. Astashenok , Alexander S. Tepliakov

Near-critical binary mixtures containing ions and confined between two charged and selective surfaces are studied within a Landau-Ginzburg theory extended to include electrostatic interactions. Charge density profiles and the effective…

软凝聚态物质 · 物理学 2012-02-28 Faezeh Pousaneh , Alina Ciach , Anna Maciolek

We propose scaling theories for Kosterlitz-Thouless (KT) phase transitions on the basis of the hallmark exponential growth of their correlation length. Finite-size scaling, finite-entanglement scaling, short-time critical dynamics, and…

统计力学 · 物理学 2022-01-05 Zhiyao Zuo , Shuai Yin , Xuanmin Cao , Fan Zhong

The constant-volume heat capacity, C_V(T, rho), of the restricted primitive model (RPM) electrolyte is considered in the vicinity of its critical point. It is demonstrated that, despite claims, recent simulations for finite systems do not…

软凝聚态物质 · 物理学 2009-10-31 Erik Luijten , Michael E. Fisher , Athanassios Z. Panagiotopoulos

A preliminary analysis of exclusive $\btou$ decays to the final states $\pi^\pm\ell\nu$, $\pi^0\ell\nu$, $\rho^\pm\ell\nu$, $\rho^0\ell\nu$\ and $\omega\ell\nu$ based on $2.2\e{6}$ $\bbar$ decays collected at CLEO is presented. We have…

高能物理 - 实验 · 物理学 2007-05-23 Lawrence Gibbons

Theoretical efforts to describe and explain the $\eta\to 3\pi$ decays reach far back in time. Even today, the convergence of the decay widths and some of the Dalitz plot parameters seems problematic in low energy QCD. In the framework of…

高能物理 - 唯象学 · 物理学 2017-03-08 Marian Kolesar , Jiri Novotny

The excess entropy of restricted primitive model electrolytes is calculated using a potential based approach through the symmetric Poisson-Boltzmann and the modified Poisson-Boltzmann theories. The theories are utilized in conjunction with…

统计力学 · 物理学 2025-04-01 S. Lamperski , L. B. Bhuiyan , C. W. Outhwaite , R. Gorniak

The electroweak corrections at the order of $O(\alpha_{ew}m_{t(b)}^2/m_W^2)$ to the partial widths of the $\tilde{t}_2 \to \tilde{g} + t$ and $\tilde{g} \to \tilde{t}_1 + \bar{t} $ decays (depending on the masses of the particles involved)…

高能物理 - 唯象学 · 物理学 2015-06-25 Hou Hong-Sheng , Ma Wen-Gan , Wan Lang-Hui , Zhang Ren-You

We have developed a series expansion method for calculating the zero-temperature properties of lattice electron models for variable electron density, i.e. for finite doping away from the half-filled case. This is done by introducing…

强关联电子 · 物理学 2007-05-23 Zheng Weihong , C. J. Hamer , J. Oitmaa , R. R. P. Singh

The superfluid transition temperature $T_c$ of a unitary Fermi gas on a three-dimensional isotropic lattice with an attractive on-site interaction is investigated as a function of density $n$, from half filling down to $5.0\times 10^{-7}$…

量子气体 · 物理学 2014-04-24 Qijin Chen