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When flat or on a firm mechanical substrate, the atomic composition and atomistic structure of two-dimensional crystals dictate their chemical, electronic, optical, and mechanical properties. These properties change when the two-dimensional…

While similarities do naturally exist between tao and other philosophical systems, for the specific case of Democritus we can argue also the chronological parallels, the parallels in the posterior development (alchemy and mathematics) and…

物理学史与哲学 · 物理学 2007-05-23 Alejandro Rivero

It is shown that properties of a discrete space-time geometry distinguish from properties of the Riemannian space-time geometry. The discrete geometry is a physical geometry, which is described completely by the world function. The discrete…

综合物理 · 物理学 2012-01-17 Yuri A. Rylov

There exists, in general, no unique definition of the size (volume, area, etc., depending on dimension) of a soliton. Here we demonstrate that the geometric volume (area etc.) of a soliton is singled out in the sense that it exactly…

高能物理 - 理论 · 物理学 2016-04-26 C. Adam , M. Haberichter , A. Wereszczynski

The analogy between monodromy in dynamical (Hamiltonian) systems and defects in crystal lattices is used in order to formulate some general conjectures about possible types of qualitative features of quantum systems which can be interpreted…

量子物理 · 物理学 2009-09-29 B. Zhilinskii

The ground states of some nuclei are described by densities and mean fields that are spherical, while others are deformed. The existence of non-spherical shape in nuclei represents a spontaneous symmetry breaking.

核理论 · 物理学 2012-05-23 Ikuko Hamamoto , Ben R. Mottelson

We discuss some equivalence relations between the non-relativistic quantum mechanics for particles subjected to potentials and for particles moving freely on background geometries. In particular, we illustrate how selected geometries can be…

量子物理 · 物理学 2021-01-05 T. Curtright , S. Subedi

Democritus and the early atomists held that "the material cause of all things that exist is the coming together of atoms and void. Atoms are eternal and have many different shapes, and they can cluster together to create things that are…

微分几何 · 数学 2022-11-09 Theodora Bourni , Mat Langford , Giuseppe Tinaglia

We analyze dynamical consequences of a conjecture that there exists a fundamental (indivisible) quant of time. In particular we study the problem of discrete energy levels of hydrogen atom. We are able to reconstruct potential which in…

量子物理 · 物理学 2009-11-13 Andrei Khrennikov , Yaroslav Volovich

A hybrid metric with off-diagonal temporal-radial behavior that was constructed to conveniently parameterized the early and late time behaviors of the universe is shown to have diagonal forms consistent with Robertson-Walker and deSitter…

广义相对论与量子宇宙学 · 物理学 2007-05-23 James Lindesay

Crystals and quasicrystals can be characterized by an order that is a purely geometric property of an instantaneous configuration, independent of particle dynamics or interactions. Glasses, on the other hand, are ostensibly amorphous…

无序系统与神经网络 · 物理学 2009-05-01 Jorge Kurchan , Dov Levine

One considers geometry with the intransitive equaivalence relation. Such a geometry is a physical geometry, i.e. it is described completely by the world function, which is a half of the squared distance function. The physical geometry…

综合数学 · 数学 2009-03-30 Yuri A. Rylov

Given recipe of qualitative, kinetic modelling by geometric methods of three-dimensional dendritic crystals. Characteristic features of the perturbations appearing on the surface of a spherical body, leading to different scenarios of the…

材料科学 · 物理学 2018-10-05 Alexander S. Prokhoda

It is shown for classical and quantum ensembles that there is a unique quantity which has the properties of a "volume". This quantity is a function of the ensemble entropy, and hence provides a geometric interpretation for the latter. It…

量子物理 · 物理学 2007-05-23 Michael J. W. Hall

We consider the dimensions of finite type of representations of a partially ordered set, i.e. such that there is only finitely many isomorphism classes of representations of this dimension. We give a criterion for a dimension to be of…

表示论 · 数学 2012-01-24 Yuriy A. Drozd , Eugene A. Kubichka

Paths in an appropriate geometry are usually used as trajectories of test particles in geometric theories of gravity. It is shown that non-symmetric geometries possess some interesting quantum features. Without carrying out any quantization…

广义相对论与量子宇宙学 · 物理学 2015-06-25 M. I. Wanas , M. E. Kahil

We develop a rigorous framework for modelling the geometry equilibration of crystalline defects. We formulate the equilibration of crystal defects as a variational problems on a discrete energy space and establish qualitatively sharp…

数值分析 · 数学 2018-10-16 Huajie Chen , Faizan Q. Nazar , Christoph Ortner

While the parameters of atomic nuclei, Z and A, indicate a general structural pattern for the nuclei, their exact masses in their fine differences seem not to exhibit the orderly kind of logical system that systematic and orderly nature…

综合物理 · 物理学 2010-12-14 Roger Ellman

We investigate geometrical properties and inequalities satisfied by the complex difference body, in the sense of studying which of the classical ones for the difference body have an analog in the complex framework. Among others we give an…

度量几何 · 数学 2016-02-03 Judit Abardia , Eugenia Saorín Gómez

It is shown that, in the self-consistent quantum statistical Hartree-Fock approximation, the number of electronic states localized on one nucleus is finite. This result is obtained on the basis of the general electron-nuclear model of…

统计力学 · 物理学 2010-06-14 V. B. Bobrov , S. A. Trigger
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