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The geometric effects of two-dimensional curved systems have been an interesting topic for a long time. A M\"{o}bius surface is specifically considered. For a relativistic particle confined to the nontrivial surface, we give the effective…

Quantum Physics · Physics 2021-09-28 Yong-Long Wang , Hao Zhao , Hua Jiang , Hui Liu , Yan-Feng Chen

We study structural properties of a ring polymeric melt confined in a film in comparison to a linear counterpart using molecular dynamics simulations. Local structure orderings of ring and linear polymers in the vicinity of the surface are…

Soft Condensed Matter · Physics 2015-10-21 Eunsang Lee , YounJoon Jung

A Green's function formalism to analyze the scattering properties in confined geometries is developed. This includes scattering from a central field inside the guide created e.g. by impurities. For atomic collisions our approach applies to…

Quantum Physics · Physics 2007-05-23 Ji il Kim , Joerg Schmiedmayer , Peter Schmelcher

The angular dependent magnetoresistance of (Per)2[Au(mnt)2] under pressure has revealed geometrical effects associated with the crystallographic parameters. Pressure suppresses the charge density wave ground state of the material, and in…

Strongly Correlated Electrons · Physics 2015-05-14 D. Graf , J. S. Brooks , E. S. Choi , M. Almeida , R. T. Henriques , J. C. Dias , S. Uji

We investigate the dynamics of second order phase transitions in two dimensions, breaking a gauged U(1) symmetry. Using numerical simulations, we show that the density of topological defects formed scales with the quench timescale $\tau_Q$…

High Energy Physics - Phenomenology · Physics 2009-10-31 Andrew Yates , Wojciech H. Zurek

We investigate the dynamics of close-contact melting (CCM) on gas-trapped hydrophobic surfaces, with specific focus on the effects of geometrical confinement and the liquid-air meniscus below the liquid film. By employing dual-series and…

Soft Condensed Matter · Physics 2025-05-14 Nan Hu , Liwu Fan , Xiang Gao , Howard A. Stone

We present a detailed study on the behaviour of vortex cores in Bi_2Sr_2CaCu_2O_{8+\delta} using scanning tunneling spectroscopy. The very irregular distribution and shape of the vortex cores imply a strong pinning of the vortices by…

Superconductivity · Physics 2009-10-31 B. W. Hoogenboom , M. Kugler , B. Revaz , I. Maggio-Aprile , Ø. Fischer , Ch. Renner

The effect of cylindrical confinement on the phase behaviour of a system of parallel hard rods is studied using Onsager's second virial theory. The hard rods are represented as hard cylinders of diameter $D$ and length $L$, while the…

Soft Condensed Matter · Physics 2022-06-07 Szabolcs Varga , Yuri Martinez-Raton , Enrique Velasco

We report an experimental study of the development of orientational order in a crumpled sheet, with a particular focus on the role played by the geometry of confinement. Our experiments are performed on elastomeric sheets immersed in a…

Soft Condensed Matter · Physics 2014-10-30 Anne Dominique Cambou , Narayanan Menon

Geometric confinement and topological constraints present promising means of controlling active materials. By combining analytical arguments derived from the Born-Oppenheimer approximation with numerical simulations, we investigate the…

Soft Condensed Matter · Physics 2023-10-11 Farzan Vafa , David R. Nelson , Amin Doostmohammadi

The self-assembly of hard polyhedral particles confined to a flat interface is studied using Monte Carlo simulations. The particles are pinned to the interface by restricting their movement in the direction perpendicular to it while…

Soft Condensed Matter · Physics 2014-12-02 V. Thapar , T. Hanrath , F. A. Escobedo

We examine the behaviour of a charged particle in a two-dimensional confining potential, in the presence of a magnetic field. The confinement serves to remove the otherwise infinite degeneracy, but additional ingredients are required to…

Mesoscale and Nanoscale Physics · Physics 2021-10-05 Asadullah Bhuiyan , Frank Marsiglio

By creating a sharp and dense dopant profile of phosphorus atoms buried within a silicon host, a two-dimensional electron gas is formed within the dopant region. Quantum confinement effects induced by reducing the thickness of the dopant…

We study the Heisenberg Model on cylindrically symmetric curved surfaces. Two kinds of excitations are considered. The first is given by the isotropic regime, yielding the sine-Gordon equation and $\pi$-solitons are predicted. The second…

Mesoscale and Nanoscale Physics · Physics 2013-03-27 Vagson L. Carvalho-Santos , Felipe A. Apolonio , Nemésio M. Oliveira-Neto

We study the interface effects in strangelets adopting mean-field approximation (MFA). Based on an equivparticle model, the linear confinement and leading-order perturbative interactions are included with density-dependent quark masses. By…

High Energy Physics - Phenomenology · Physics 2018-09-12 Cheng-Jun Xia , Guang-Xiong Peng , Ting-Ting Sun , Wan-Lei Guo , Ding-Hui Lu , Prashanth Jaikumar

Rod-like objects at high packing fractions can form smectic phases, where the rods break rotational and translational symmetry by forming lamellae. Smectic defects thereby include both discontinuities in the rod orientational order…

Soft Condensed Matter · Physics 2023-12-01 Ethan I. L. Jull , Gerardo Campos-Villalobos , Qianjing Tang , Marjolein Dijkstra , Lisa Tran

Quantum mechanics is sensitive to the geometry of the underlying space. Here, we present a framework for quantum scattering of a non-relativistic particle confined to a two-dimensional space. When the motion manifold hosts localized…

Quantum Physics · Physics 2024-02-19 Lars Meschede , Benjamin Schwager , Dominik Schulz , Jamal Berakdar

Vertically vibrated rod-shaped granular materials confined to quasi-2D containers self organize into distinct patterns. We find, consistent with theory and simulation, a density dependent isotropic-nematic transition. Along the walls, rods…

Soft Condensed Matter · Physics 2009-11-11 J. Galanis , D. Harries , D. L. Sackett , W. Losert , R. Nossal

Geometrically confined superconductors often experience a breakdown in the quantization of magnetic flux owing to the incomplete screening of the supercurrent against the field penetration. In this study, we report that the confinement of a…

Previous experimental and numerical studies showed that two-dimensional roughness elements can stabilize disturbances inside a hypersonic boundary layer, and eventually delay the transition onset. The objective of this paper is to evaluate…

Fluid Dynamics · Physics 2018-07-09 Jeremy Sawaya , Vasileios Sassanis , Sofia Yassir , Adrian Sescu , Miguel Visbal
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