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Consider a proper cocompact CAT(0) space X. We give a complete algebraic characterisation of amenable groups of isometries of X. For amenable discrete subgroups, an even narrower description is derived, implying Q-linearity in the…

Group Theory · Mathematics 2014-05-15 Pierre-Emmanuel Caprace , Nicolas Monod

In this article we examine some points in the moduli space of M-Theory at which there arise enhanced gauge symmetries. In particular, we examine the ``trivial" points of enhanced gauge symmetry in the moduli space of M-Theory on $S^{ 1 }…

High Energy Physics - Theory · Physics 2007-05-23 K. Davis

We develop a second-order cosmological perturbation theory on a background geometry expressed in terms of light-cone coordinates, extending the first-order analyses available in the literature. In particular, we investigate the gauge…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-30 Pierre Béchaz , Giuseppe Fanizza , Giovanni Marozzi , Matheus R. Medeiros Silva

We consider loop observables in gauged Wess-Zumino-Witten models, and study the action of renormalization group flows on them. In the WZW model based on a compact Lie group G, we analyze at the classical level how the space of…

High Energy Physics - Theory · Physics 2014-11-20 Costas Bachas , Samuel Monnier

In this paper, we investigate the properties of the category of equivariant diagram spectra indexed on the category W_G of based G-spaces homeomorphic to finite G-CW-complexes for a compact Lie group G. Using the machinery of Mandell, May,…

Algebraic Topology · Mathematics 2009-06-30 Andrew Blumberg

The basics of operadic variational formalism is presented which is necessary when modeling the operadic systems. A general gauge theoretic approach to the abstract operads, based on the physical measurements concepts, is justified and…

Mathematical Physics · Physics 2015-04-06 Eugen Paal

The relation between manifold topology, observables and gauge group is clarified on the basis of the classification of the representations of the algebra of observables associated to positions and displacements on the manifold. The guiding,…

Quantum Physics · Physics 2021-12-01 G. Morchio , F. Strocchi

Lie algebroid Yang-Mills theories are a generalization of Yang-Mills gauge theories, replacing the structural Lie algebra by a Lie algebroid E. In this note we relax the conditions on the fiber metric of E for gauge invariance of the action…

High Energy Physics - Theory · Physics 2009-11-09 Christoph Mayer , Thomas Strobl

We construct asymptotically safe extensions of the Standard Model by adding gauged vector-like fermions. Using large number-of-flavour techniques we argue that all gauge couplings, including the hypercharge and, under certain conditions,…

High Energy Physics - Phenomenology · Physics 2018-01-16 Robert Mann , Julia Meffe , Francesco Sannino , Tom Steele , Zhi-Wei Wang , Chen Zhang

We consider a non-commutative U(1) gauge theory in 4 dimensions with a modified Slavnov term which looks similar to the 3-dimensional BF model. In choosing a space-like axial gauge fixing we find a new vector supersymmetry which is used to…

High Energy Physics - Theory · Physics 2008-11-26 Daniel N. Blaschke , Stefan Hohenegger

We construct various kinds of gauged noncommutative WZW models. In particular, axial gauged noncommutative U(2)/U(1) WZW model is studied and by integrating out the gauge fields, we obtain a noncommutative non-linear $\sigma$-model.

High Energy Physics - Theory · Physics 2009-11-07 A. M. Ghezelbash

Observable structures of a topological field theory of AKSZ type are analyzed. From a double (or multiple) complex structure of observable algebras, new topological invariants are constructed. Especially, Donaldson polynomial invariants and…

High Energy Physics - Theory · Physics 2011-04-13 Noriaki Ikeda

We explore the effective theory of an axion in a gauged baryon number symmetry extension of the Standard Model (SM), where the axion is realized from a Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) model construction. Integrating out the…

High Energy Physics - Phenomenology · Physics 2023-04-05 Alexey Kivel , Julien Laux , Felix Yu

Parallel transport as dictated by a gauge field determines a collection of local reference systems. Comparing local reference systems in overlapping regions leads to an ensemble of algebras of relational kinematical observables for gauge…

General Relativity and Quantum Cosmology · Physics 2021-11-18 Claudio Meneses , Jose A. Zapata

We define a family of observables for abelian Yang-Mills fields associated to compact regions $U \subseteq M$ with smooth boundary in Riemannian manifolds. Each observable is parametrized by a first variation of solutions and arises as the…

Mathematical Physics · Physics 2019-06-18 Homero G. Díaz-Marín

In this work we deal with the extension of the Kaluza-Klein approach to a non-Abelian gauge theory; we show how we need to consider the link between the n-dimensional model and a four-dimensional observer physics, in order to reproduce…

General Relativity and Quantum Cosmology · Physics 2009-11-11 F. Cianfrani , G. Montani

The supersymmetric model developed by Witten to study the equivariant cohomology of a manifold with an isometric circle action is derived from the BRST quantization of a simple classical model. The gauge-fixing process is carefully…

High Energy Physics - Theory · Physics 2009-11-11 Alice Rogers

We construct six-dimensional superconformal models with non-abelian tensor and hypermultiplets. They describe the field content of (2,0) theories, coupled to (1,0) vector multiplets. The latter are part of the non-abelian gauge structure…

High Energy Physics - Theory · Physics 2015-06-12 Henning Samtleben , Ergin Sezgin , Robert Wimmer

We study an equivariant extension of the Batalin-Vilkovisky formalism for quantizing gauge theories. Namely, we introduce a general framework to encompass failures of the quantum master equation, and we apply it to the natural equivariant…

High Energy Physics - Theory · Physics 2021-01-20 Francesco Bonechi , Alberto S. Cattaneo , Jian Qiu , Maxim Zabzine

We introduce the covariant forms for the non-Abelian anomaly counterparts in topological Yang-Mills theory, which satisfies the topological descent equation modulo terms that vanish at the space of BRST fixed points. We use the covariant…

High Energy Physics - Theory · Physics 2007-05-23 Jae-Suk Park