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In this paper, we initiate the study of endomorphisms and modular theory of the graph C*-algebras $\O_{\theta}$of a 2-graph $\Fth$ on a single vertex. We prove that there is a semigroup isomorphism between unital endomorphisms of…

Operator Algebras · Mathematics 2009-10-10 Dilian Yang

We study orbifolds of ${\cal N} = 4$ U(n) super-Yang-Mills theory given by discrete subgroups of SU(2) and SU(3). We have reached many interesting observations that have graph-theoretic interpretations. For the subgroups of SU(2), we have…

High Energy Physics - Theory · Physics 2009-10-31 Amihay Hanany , Yang-Hui He

Jones introduced unitary representations of Thompson group $F$ starting from a given subfactor planar algebra, and all unoriented links arise as matrix coefficients of these representations. Moreover, all oriented links arise as matrix…

Group Theory · Mathematics 2016-09-30 Yunxiang Ren

I. Introduction (What is new in RMT, Superconducting quasiparticles, Experimental platforms) II. Topological superconductivity (Kitaev chain, Majorana operators, Majorana zero-modes, Phase transition beyond mean-field) III. Fundamental…

Mesoscale and Nanoscale Physics · Physics 2015-09-07 C. W. J. Beenakker

A concise discussion of spin-1/2 field equations with a special focus on Majorana spinors is presented. The Majorana formalism which describes massive neutral fermions by the help of two-component or four-component spinors is of fundamental…

High Energy Physics - Theory · Physics 2010-10-28 Andreas Aste

Monstrous moonshine relates distinguished modular functions to the representation theory of the monster. The celebrated observations that 196884=1+196883 and 21493760=1+196883+21296876, etc., illustrate the case of the modular function…

Representation Theory · Mathematics 2015-12-31 John F. R. Duncan , Michael J. Griffin , Ken Ono

Recently Takahiro Yabe gave an almost complete classification of primitive symmetric $2$-generated axial algebras of Monster type. In this note, we construct a new infinite-dimensional primitive $2$-generated symmetric axial algebra of…

Rings and Algebras · Mathematics 2022-03-09 Clara Franchi , Mario Mainardis

Topological superconductors in one spatial dimension exhibiting a single Majorana bound state at each end are distinguished from trivial gapped systems by a Z_2 topological invariant. Originally, this invariant was calculated by Kitaev in…

Mesoscale and Nanoscale Physics · Physics 2013-08-15 Jan Carl Budich , Eddy Ardonne

We explore the possibility of interpreting the solar and atmospheric neutrino data within the context of the Minimal Supersymmetric Standard Model augmented by a single U(1) anomalous family symmetry spontaneously broken by non-zero vacuum…

High Energy Physics - Phenomenology · Physics 2009-11-10 G. K. Leontaris , J. Rizos , A. Psallidas

Eight Majorana fermions in $d=1+1$ dimensions enjoy a triality that permutes the representation of the $SO(8)$ global symmetry in which the fermions transform. This triality plays an important role in the quantization of the superstring,…

High Energy Physics - Theory · Physics 2020-04-01 David Tong , Carl Turner

We derive a holomorphic anomaly equation for the Vafa-Witten partition function for twisted four-dimensional $\mathcal{N} =4$ super Yang-Mills theory on $\mathbb{CP}^{2}$ for the gauge group $SO(3)$ from the path integral of the effective…

High Energy Physics - Theory · Physics 2020-11-18 Atish Dabholkar , Pavel Putrov , Edward Witten

We formulate D=11 supergravity over the octonions by rewriting 32-component Majorana spinors as 4-component octonionic spinors. Dimensional reduction to D=4 and D=3 suggests an interpretation of the so-called 'dilaton vectors', which…

High Energy Physics - Theory · Physics 2015-06-12 A. Anastasiou , M. J. Hughes

Dimensional reduction of (super-)gravity theories to 3 dimensions results in sigma models on coset spaces G/H, such as the E_8/SO(16) coset in the bosonic sector of 3 dimensional maximal supergravity. The reverse process, oxidation, is the…

High Energy Physics - Theory · Physics 2009-11-07 Arjan Keurentjes

Recent research has revealed that the CRT symmetry for fermions exhibits a fractionalization distinct from the $\mathbb{Z}_2^{\mathcal{C}}\times\mathbb{Z}_2^{\mathcal{R}}\times\mathbb{Z}_2^{\mathcal{T}}$ for scalar bosons. In fact, the CRT…

Strongly Correlated Electrons · Physics 2026-05-05 Yang-Yang Li , Zheyan Wan , Juven Wang , Shing-Tung Yau , Yi-Zhuang You

In [7], Donovan and Wemyss introduced the contraction algebra of flop- ping curves in 3-folds. When the flopping curve is smooth and irreducible, we prove that the contraction algebra together with its A_\infty-structure recovers various…

Algebraic Geometry · Mathematics 2016-01-21 Zheng Hua , Yukinobu Toda

Let $\mathbb{M}$ be the Monster finite simple group. We give an interpretation of certain discrete symmetries of a family of heterotic string compactifications to $1 + 1$ dimensions in terms of discrete symmetries of the Monster Lie algebra…

High Energy Physics - Theory · Physics 2022-03-08 Lisa Carbone , Natalie M. Paquette

In this paper we consider the algebra of upper triangular matrices UT$_n(F)$, endowed with a $\mathbb{Z}_2$-grading (superalgebra) and equipped with a superinvolution. These structures naturally arise in the context of Lie and Jordan…

Rings and Algebras · Mathematics 2025-09-12 Elena Campedel , Pedro Fagundes , Antonio Ioppolo

We use uniqueness of a VOA (vertex operator algebra) extension of $(V_{EE_8}^+)^3$ to a Moonshine type VOA to give a new existence proof of a finite simple group of Monster type. The proof is relatively direct. Our methods depend on VOA…

Quantum Algebra · Mathematics 2011-03-10 Robert L. Griess , Ching Hung Lam

In the quest for mathematical foundations of M-theory, the "Hypothesis H" that fluxes are quantized in Cohomotopy theory, implies, on flat but possibly singular spacetimes, that M-brane charges locally organize into equivariant homotopy…

High Energy Physics - Theory · Physics 2023-12-07 Hisham Sati , Urs Schreiber

In this paper we study a Clifford algebra generalization of the quaternions and its relationship with braid group representations related to Majorana fermions. The Fibonacci model for topological quantum computing is based on the fusion…

Strongly Correlated Electrons · Physics 2016-08-24 Louis H. Kauffman , Samuel J. Lomonaco
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