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We study the effective electrostatic interactions between a pair of charged colloidal particles without salt ions while the system is confined in two dimensions. In particular we use a simplified model to elucidate the effects of rotational…

软凝聚态物质 · 物理学 2010-09-09 Chi-Lun Lee , Sio-Kit Ng

We have made a variational analysis on an evolution of superconductivity from weak to strong coupling regime. In contrast to a crossover without thermodynamic anomaly found in a dilute system, we show the existence of a quantum phase…

超导电性 · 物理学 2007-05-23 S. Saito , H. Yoshimoto , Y. Y. Suzuki , S. Kurihara

Repulsive self-propelled particles tend to cluster, leading to Motility-Induced Phase Separation (MIPS). By analogy with equilibrium phase separation, the onset of MIPS has been associated with a transition to effective attraction between…

We briefly review the generalized dynamical mean-field theory DMFT+Sigma treatment of both repulsive and attractive disordered Hubbard models. We examine the general problem of metal-insulator transition and the phase diagram in repulsive…

强关联电子 · 物理学 2016-06-22 E. Z. Kuchinskii , M. V. Sadovskii

Nonlinear transport in the one dimensional Hubbard model at half-filling under a finite bias voltage is investigated by the adaptive time-dependent density matrix renormalization group method. For repulsive on-site interaction, dielectric…

强关联电子 · 物理学 2015-03-17 Shunsuke Kirino , Kazuo Ueda

In mixtures of colloids and nonadsorbing polyelectrolytes, a Donnan potential arises across the region between surfaces that are depleted of polyelectrolyte and the rest of the system. This Donnan potential tends to shift the…

软凝聚态物质 · 物理学 2022-10-27 Jasper Landman , Max P. M. Schelling , Remco Tuinier , Mark Vis

Motivated by the resistive switchings in transition-metal oxides (TMOs) induced by a voltage bias, we study the far-from-equilibrium dynamics of an electric-field-driven strongly-correlated model featuring a first-order insulator-to-metal…

强关联电子 · 物理学 2023-05-26 Manuel I. Díaz , Jong E. Han , Camille Aron

The elucidation of nonequilibrium states in strongly correlated systems holds the key to emergence of novel quantum phases. The nonequilibrium-induced insulator-to-metal transition is particularly interesting since it reflects the…

强关联电子 · 物理学 2022-08-05 Kazuya Shinjo , Shigetoshi Sota , Takami Tohyama

In two-dimensional systems possessing a high degree of symmetry, the repulsive electron-electron interaction produces a pairing force; the mechanism would fail in the presence of strong distortions. We have studied this in the one-band and…

超导电性 · 物理学 2007-05-23 Michele Cini , Gianluca Stefanucci

We theoretically investigate the effect of an attractive on-site interaction on the two-band magnetic Dirac fermion model based on a square lattice system. When the attractive fermion interaction is taken into account by the mean-field…

介观与纳米尺度物理 · 物理学 2020-01-08 Fenghua Qi , Jun Cao , Jie Cao , Xiao Li , Lifa Zhang

The effect of concentration-dependent switching of the non-equilibrium depletion interaction between obstacles in a gas flow of interacting Brownian particles is presented. When increasing bath fraction exceeds half-filling, the…

统计力学 · 物理学 2017-02-14 O. V. Kliushnychenko , S. P. Lukyanets

Coulomb repulsion between two moving electrons loses its spherical symmetry due to relativistic effects. In presence of a uniform positive ion background this asymmetry uncovers an angular dependent attraction potential in the direction of…

超导电性 · 物理学 2007-05-23 F. Raissi

Using a high-frequency expansion in periodically driven extended Hubbard models, where the strengths and ranges of density-density interactions are arbitrary, we obtain the effective interactions and bandwidth, which depend sensitively on…

强关联电子 · 物理学 2017-05-01 Kenji Yonemitsu

In this paper we review a series of results obtained for 1D and 2D simple N-body dynamical models with infinite-range attractive interactions and without short distance singularities. The free energy of both models can be exactly obtained…

统计力学 · 物理学 2018-03-28 Mickael Antoni , Stefano Ruffo , Alessandro Torcini

The mutual electromagnetic correlations between two spatially separated systems gives rise to Casimir and Casimir-Polder effect. The corresponding forces, which are generally attractive for most vacuum-separated metallic or dielectric…

介观与纳米尺度物理 · 物理学 2016-07-13 Partha Goswami

Two overall neutral surfaces with positive and negative charged domains ("patches") have been shown in recent experiments to exhibit long-range attraction when immersed in an ionic solution. Motivated by the experiments, we calculate…

软凝聚态物质 · 物理学 2016-08-31 Ram M. Adar , David Andelman , Haim Diamant

We make a general derivation for the magnetic dipole-dipole interaction based on the mediation of the quantized electro-magnetic field. Due to the interaction with the dipoles, the dynamics of the field is added by a dipole field, which…

量子物理 · 物理学 2020-08-07 Fang-qi Hu , Qing Zhao , Sheng-Wen Li

We study absorbing phase transitions in the one-dimensional branching annihilating random walk with long-range repulsion. The repulsion is implemented as hopping bias in such a way that a particle is more likely to hop away from its closest…

统计力学 · 物理学 2023-07-26 Su-Chan Park

We present results on the dynamical correlation functions of the particle-hole symmetric Holstein-Hubbard model at zero temperature, calculated using the dynamical mean field theory which is solved by the numerical renormalization group…

强关联电子 · 物理学 2009-11-10 W. Koller , D. Meyer , A. C. Hewson

We discuss the phase diagram of the extended Hubbard model with both attractive and repulsive local and nonlocal interactions. The extended dynamical mean-field theory (EDMFT) and the dual boson method (DB) are compared. The latter contains…

强关联电子 · 物理学 2019-02-15 E. G. C. P. van Loon , M. I. Katsnelson