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I discuss examples where basic structures from Connes' noncommutative geometry naturally arise in quantum field theory. The discussion is based on recent work, partly collaboration with J. Mickelsson.

高能物理 - 理论 · 物理学 2025-01-30 Edwin Langmann

I give a summary of the progress made on using the elegant construction of Alain Connes noncommutaive geometry to explore the nature of space-time at very high energies. In particular I show that by making very few natural and weak…

高能物理 - 理论 · 物理学 2019-08-20 Ali H. Chamseddine

It is shown that Connes' generalized gauge field in non-commutative geometry is derived by simply requiring that Dirac lagrangian be invariant under local transformations of the unitary elements of the algebra, which define the gauge group.…

高能物理 - 理论 · 物理学 2009-10-31 Hiromi Kase , Katsusada Morita , Yoshitaka Okumura

Connes' notion of non-commutative geometry (NCG) generalizes Riemannian geometry and yields a striking reinterepretation of the standard model of particle physics, coupled to Einstein gravity. We suggest a simple reformulation with two key…

高能物理 - 理论 · 物理学 2015-06-18 Latham Boyle , Shane Farnsworth

Let $G$ be a compact Lie group, $N\geq 1$ and $L>0$. The random geometric graph on $G$ is the random graph $\Gamma(N,L)$ whose vertices are $N$ random points $g_1,\ldots,g_N$ chosen under the Haar measure of $G$, and whose edges are the…

概率论 · 数学 2018-12-06 Pierre-Loïc Méliot

In terms of non-commutative geometry, we show that the $\sigma$--model can be built up by the gauge theory on discrete group $Z_2$. We introduce a constraint in the gauge theory, which lead to the constraint imposed on linear $\sigma$ model…

高能物理 - 理论 · 物理学 2007-05-23 Hanying Guo , Jianming Li , Ke Wu , 10 pages , Latex ASITP-93-67

Gaussian Graphical Models (GGMs) have wide-ranging applications in machine learning and the natural and social sciences. In most of the settings in which they are applied, the number of observed samples is much smaller than the dimension…

机器学习 · 计算机科学 2020-03-10 Jonathan Kelner , Frederic Koehler , Raghu Meka , Ankur Moitra

Noncommutative geometric gauge theory is reconstructed based on the superconnection concept. The bosonic action of the Connes-Lott model including the symmetry breaking Higgs sector is obtained by using a new generalized derivative, which…

高能物理 - 理论 · 物理学 2008-11-26 Chang-Yeong Lee

In [1], Connes presented axioms governing noncommutative geometry. He went on to claim that when specialised to the commutative case, these axioms recover spin or spin^c geometry depending on whether the geometry is ''real'' or not. We…

数学物理 · 物理学 2007-05-23 A. Rennie

We provide a self-contained introduction to the quantum group approach to noncommutative geometry as the next-to-classical effective geometry that might be expected from any successful quantum gravity theory. We focus particularly on a…

高能物理 - 理论 · 物理学 2007-05-23 S. Majid

Connes' non-commutative geometry (NCG) is a generalization of Riemannian geometry that is particularly apt for expressing the standard model of particle physics coupled to Einstein gravity. In a previous paper, we suggested a reformulation…

高能物理 - 理论 · 物理学 2015-06-22 Shane Farnsworth , Latham Boyle

Let G be a finitely presented group, and G' its commutator subgroup. Let C be the Cayley graph of G' with all commutators in G as generators. Then C is large scale simply connected. Furthermore, if G is a torsion-free nonelementary…

群论 · 数学 2014-10-01 Danny Calegari , Dongping Zhuang

The Collective Graphical Model (CGM) models a population of independent and identically distributed individuals when only collective statistics (i.e., counts of individuals) are observed. Exact inference in CGMs is intractable, and previous…

机器学习 · 计算机科学 2014-05-21 Li-Ping Liu , Daniel Sheldon , Thomas G. Dietterich

The purpose of this paper is to investigate the global categorical symmetries that arise when gauging finite higher groups in three or more dimensions. The motivation is to provide a common perspective on constructions of non-invertible…

高能物理 - 理论 · 物理学 2024-07-17 Thomas Bartsch , Mathew Bullimore , Andrea E. V. Ferrari , Jamie Pearson

We illustrate the various ways in which the algebraic framework of noncommutative geometry naturally captures the short-distance spacetime properties of string theory. We describe the noncommutative spacetime constructed from a vertex…

高能物理 - 理论 · 物理学 2010-11-19 Fedele Lizzi , Richard J. Szabo

This paper provides results on the modular representation theory of the supergroup $GL(m|n).$ Working over a field of arbitrary characteristic, we prove that the explicit combinatorics of certain crystal graphs describe the representation…

表示论 · 数学 2007-05-23 Jonathan Kujawa

Let $\Gamma$ be a countable abelian group. An (abstract) $\Gamma$-system $\mathrm{X}$ - that is, an (abstract) probability space equipped with an (abstract) probability-preserving action of $\Gamma$ - is said to be a Conze-Lesigne system if…

动力系统 · 数学 2024-02-20 Asgar Jamneshan , Or Shalom , Terence Tao

Some very simple models of gauge systems with noncanonical symplectic structures having $sl(2,r)$ as the gauge algebra are given. The models can be interpreted as noncommutative versions of the usual $SL(2,\mathbb{R})$ model of…

高能物理 - 理论 · 物理学 2007-05-23 Vladimir Cuesta , Merced Montesinos , Jose David Vergara

We give a geometric perspective on the algebra of Drinfeld modular forms for congruence subgroups $\Gamma\leq \GL_2(\bbF_q[T]).$ In particular, we describe an isomorphism between the section ring of a line bundle on the stacky modular curve…

数论 · 数学 2024-10-15 Jesse Franklin

Symplectic gauge theories coupled to matter fields lead to symmetry enhancement phenomena that have potential applications in such diverse contexts as composite Higgs, top partial compositeness, strongly interacting dark matter, and…