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We develop a suitable technique to design zero-energy graphene models with radial electrostatic potentials capable of achieving electrostatic confinement. Using the Gaussian law for electrostatics, we derive the charge density associated…

介观与纳米尺度物理 · 物理学 2025-10-31 Francisco Correa , Luis Inzunza , Vít Jakubský

I discuss several issues about the irreversibility of the RG flow and the trace anomalies c, a and a'. First I argue that in quantum field theory: i) the scheme-invariant area Delta(a') of the graph of the effective beta function between…

高能物理 - 理论 · 物理学 2009-11-07 Damiano Anselmi

The plasmoid instability may lead to fast magnetic reconnection through long current sheets(CS). It is well known that large-Reynolds-number plasmas easily become turbulent. We address the question whether turbulence enhances the energy…

等离子体物理 · 物理学 2016-05-03 Fabien Widmer , Jörg Büchner , Nobumitsu Yokoi

Topological quantum matter exhibits novel transport phenomena driven by entanglement between internal degrees of freedom, as for instance generated by spin-orbit coupling effects. Here we report on a direct connection between the mechanism…

介观与纳米尺度物理 · 物理学 2025-06-06 Jorge Martinez Romeral , Aron W. Cummings , Stephan Roche

We present a framework for the gradient flow of sharp-interface surface energies that couple to embedded curvature active agents. We use a penalty method to develop families of locally incompressible gradient flows that couple interface…

偏微分方程分析 · 数学 2025-09-10 Keith Promislow , Truong Vu , Brian Wetton

We describe how to apply the recursive Green's function method to the computation of electronic transport properties of graphene sheets and nanoribbons in the linear response regime. This method allows for an amenable inclusion of several…

介观与纳米尺度物理 · 物理学 2013-06-18 Caio H. Lewenkopf , Eduardo R. Mucciolo

Conformal Gravity (CG) is a Weyl--invariant metric theory whose action is free from divergences for generic asymptotically anti-de Sitter spaces. For Neumann boundary conditions, it reduces to renormalized Einstein--AdS gravity at tree…

高能物理 - 理论 · 物理学 2025-08-18 Giorgos Anastasiou , Martin Bravo , Rodrigo Olea

Two-dimensional (2D) materials display nanoscale dynamic ripples that significantly impact their properties. Defects within the crystal lattice are the elementary building blocks to tailor the material's morphology. While some studies have…

材料科学 · 物理学 2025-03-11 Fabian L. Thiemann , Camille Scalliet , Erich A. Müller , Angelos Michaelides

We consider the athermal quasi-static dynamics (AQS) of disordered systems driven by a slowly varying external field. Our interest is in an automaton description (AQS-A) that represents the AQS dynamics in terms of the graph of state…

无序系统与神经网络 · 物理学 2019-05-21 Muhittin Mungan , M. Mert Terzi

We investigated the effect of out-of-plane crumpling on the mechanical response of graphene membranes. In our experiments, stress was applied to graphene membranes using pressurized gas while the strain state was monitored through two…

介观与纳米尺度物理 · 物理学 2017-06-29 Ryan J. T. Nicholl , Nickolay V. Lavrik , Ivan Vlassiouk , Bernadeta R. Srijanto , Kirill I. Bolotin

The density of states near zero energy in a graphene due to strong point defects with random positions are computed. Instead of focusing on density of states directly, we analyze eigenfunctions of inverse T-matrix in the unitary limit.…

强关联电子 · 物理学 2015-05-20 Bor-Luen Huang , Ming-Che Chang , Chung-Yu Mou

We present a unified theoretical framework for the study of spin dynamics and relativistic transport phenomena in disordered two-dimensional Dirac systems with pseudospin-spin coupling. The formalism is applied to the paradigmatic case of…

介观与纳米尺度物理 · 物理学 2018-07-11 Manuel Offidani , Roberto Raimondi , Aires Ferreira

Entropy creation rate is introduced for a system interacting with thermostats ({\it i.e.}, in the usual language, for a system subject to internal conservative forces interacting with ``external'' thermostats via conservative forces) and a…

统计力学 · 物理学 2007-05-23 G. Gallavotti

Given a locally finite graph $\Gamma$, an amenable subgroup $G$ of graph automorphisms acting freely and almost transitively on its vertices, and a $G$-invariant activity function $\lambda$, consider the free energy $f_G(\Gamma,\lambda)$ of…

概率论 · 数学 2023-03-02 Raimundo Briceño

Direct numerical simulations are performed to investigate the combined effects of surface roughness and wall heat transfer on spatially developing compressible turbulent boundary layers at $Ma=2.5$. The roughness consists of transverse…

流体动力学 · 物理学 2026-04-14 Youtian Su , Wei-Xi Huang , Chunxiao Xu

Graphene is a powerful membrane prototype for both applications and fundamental research. Rheological phenomena including indentation, twisting, and wrinkling in deposited and suspended graphene are actively investigated to unravel the…

A detailed study is presented of the counterrotating model (CRM) for generic electrovacuum static axially symmetric relativistic thin disks without radial pressure. We find a general constraint over the counterrotating tangential velocities…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Gonzalo García-Reyes , Guillermo A. González

We start with a rather detailed, general discussion of recent results of the replica approach to statistical mechanics of a single classical particle placed in a random $N (\gg 1)$-dimensional Gaussian landscape and confined by a…

无序系统与神经网络 · 物理学 2008-01-03 Yan V Fyodorov , Ian Williams

Magnetic reconnection (MR) in collisionless plasma is often attributed to the off-diagonal electron Reynolds stress, which can give rise to a large induction electric field in the reconnection region. However, in magneto-hydro-dynamics…

等离子体物理 · 物理学 2017-11-27 Zhi-Wei Ma , Tong Chen

We present a unique experimental configuration that allows us to determine the interfacial forces on nearly parallel plates made from the thinnest possible mechanical structures, single and few layer graphene membranes. Our approach…