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The algebraic elements of gravitational and Standard Model gauge fields acting on a generation of fermions may be represented using real matrices. These elements match a subalgebra of spin(11,3) acting on a Majorana-Weyl spinor, consistent…

General Relativity and Quantum Cosmology · Physics 2010-06-28 A. Garrett Lisi

We propose that all light fermionic degrees of freedom, including the Standard Model (SM) fermions and all possible light beyond-the-standard-model fields, are chiral with respect to some spontaneously broken abelian gauge symmetry.…

High Energy Physics - Phenomenology · Physics 2015-07-06 André de Gouvea , Daniel Hernandez

We propose UV complete (Partially) Composite Higgs models with compositeness scale up to the Planck scale assisted by a novel mechanism. This mechanism is based on softly breaking a global $ \mathbb{Z}_2 $ symmetry by technically natural…

High Energy Physics - Phenomenology · Physics 2022-07-28 Martin Rosenlyst

We establish a general map between Grassmann functionals for fermions and probability or weight distributions for Ising spins. The equivalence between the two formulations is based on identical transfer matrices and expectation values of…

Statistical Mechanics · Physics 2017-04-05 C. Wetterich

We study generalized multifractality that characterizes eigenstate fluctuations and correlations in disordered systems of chiral symmetry classes AIII, BDI, and CII. By using the non-linear sigmamodel field theory, we construct pure-scaling…

Disordered Systems and Neural Networks · Physics 2023-04-05 Jonas F. Karcher , Ilya A. Gruzberg , Alexander D. Mirlin

Grand gauge-Higgs unification of five dimensional $SU(6)$ gauge theory on an orbifold $S^1/Z_2$ is discussed. The Standard model (SM) fermions are introduced on one of the boundaries and some massive bulk fields are also introduced so that…

High Energy Physics - Phenomenology · Physics 2019-12-06 Nobuhito Maru , Yoshiki Yatagai

Recently a new mechanism has been proposed to cure the problem of fermion mass hierarchy in the Standard Model (SM) model. In this scenario, all SM charged fermions other than top quark arise from higher dimensional operators involving the…

High Energy Physics - Phenomenology · Physics 2013-05-30 Dilip Kumar Ghosh , R. S. Hundi

In this paper, we examine the coupling of matter fields to gravity within the framework of the Standard Model of particle physics. The coupling is described in terms of Weyl fermions of a definite chirality, and employs only (anti)self-dual…

High Energy Physics - Theory · Physics 2011-09-09 Lay Nam Chang , Chopin Soo

We formulate a viable low-scale seesaw model, where the masses for the standard model (SM) charged fermions lighter than the top quark emerge from a universal seesaw mechanism mediated by charged vectorlike fermions. The small light active…

High Energy Physics - Phenomenology · Physics 2019-09-04 A. E. Cárcamo Hernández , Juan Marchant González , U. J. Saldaña-Salazar

The present work introduces new scalar and fermionic degrees of freedom to the Standard Model. While the scalar sector is augmented by a complex scalar triplet and a doubly charged scalar singlet, the fermionic sector is extended by two…

High Energy Physics - Phenomenology · Physics 2021-11-30 Nabarun Chakrabarty

We consider a class of gauged $U(1)$ extensions of the Standard Model (SM), where the light neutrino masses are generated by an inverse seesaw mechanism. In addition to the three right handed neutrinos, we add three singlet fermions and…

High Energy Physics - Phenomenology · Physics 2020-03-25 Arindam Das , Srubabati Goswami , Vishnudath K. N. , Takaaki Nomura

The Ginsparg-Wilson (GW) relation elegantly captures how the anomalous chiral symmetry of a Dirac fermion manifests on the lattice. In this talk, we discuss how the GW relation and its closed-form solution, the overlap operator, can be…

High Energy Physics - Lattice · Physics 2025-04-01 Hersh Singh

The assumption that space-time is a noncommutative space formed as a product of a continuous four dimensional manifold times a finite space predicts, almost uniquely, the Standard Model with all its fermions, gauge fields, Higgs field and…

High Energy Physics - Theory · Physics 2014-09-26 Ali H. Chamseddine , Alain Connes , Walter D. van Suijlekom

The Hubbard model arises naturally when electron-electron interactions are added to the tight-binding descriptions of many condensed matter systems. For instance, the two-dimensional Hubbard model on the honeycomb lattice is central to the…

Strongly Correlated Electrons · Physics 2020-01-23 Jan-Lukas Wynen , Evan Berkowitz , Christopher Körber , Timo A. Lähde , Thomas Luu

We investigate the vacuum stability as well as the gravitational corrections in extensions of the Standard Model featuring a new complex scalar, and two Dirac fermions for different choices of the hypercharge of the scalar and one of the…

High Energy Physics - Phenomenology · Physics 2014-07-31 Oleg Antipin , Jens Krog , Matin Mojaza , Francesco Sannino

We suggest a simple supersymmetric SO(10) grand unified theory in 6 dimensions which produces the suitable fermion mass hierarchies. The 5th and 6th dimensional coordinates are compactified on a $T^2/Z_2$ orbifold. The gauge and Higgs…

High Energy Physics - Phenomenology · Physics 2009-11-07 N. Haba , T. Kondo , Y. Shimizu

It is known that certain theories with extended supersymmetry can be discretized in such a way as to preserve an exact fermionic symmetry. In the simplest model of this kind, we show that this residual supersymmetric invariance is actually…

High Energy Physics - Lattice · Physics 2009-11-10 Simon Catterall

We identify natural degrees of freedom of polycrystalline materials -- affine transformations of grains -- with those of a three-dimensional lattice theory for $(T\otimes\Omega)(\mathbb{R}^3)$. We define a lattice Dirac operator on this…

High Energy Physics - Theory · Physics 2007-05-23 I. Schmelzer

We suggest a simple grand unified theory where the fifth dimensional coordinate is compactified on an $S_1/(Z_2 \times Z_2')$ orbifold. This model is based on the supersymmetric flipped $SU(5) \times U(1)$ grand unified theory, which can…

High Energy Physics - Phenomenology · Physics 2014-11-17 N. Haba , Y. Shimizu , Tomoharu Suzuki , Kazumasa Ukai

We propose an attractor mechanism which generates the "more minimal" supersymmetric standard model from a broad class of supersymmetry breaking boundary conditions. The hierarchies in the fermion masses and mixings are produced by the same…

High Energy Physics - Phenomenology · Physics 2013-05-30 Timothy Cohen , Anson Hook , Gonzalo Torroba