Results 11 to 20 of about 3,196 (276)

Conformal symmetry: Towards the link between the Fermi and the Planck scales

open access: diamondPhysics Letters B, 2018
If the mass of the Higgs boson is put to zero, the classical Lagrangian of the Standard Model (SM) becomes conformally invariant (CI). Taking into account quantum non-perturbative QCD effects violating CI leads to electroweak symmetry breaking with the scale $v \sim _{\rm QCD}\sim 100$ MeV which is three orders of magnitude less than it is observed ...
Mikhail Shaposhnikov, Andrey Shkerin
openalex   +3 more sources

Parisi-Sourlas Supertranslation and Scale Invariance without Conformal Symmetry [PDF]

open access: hybridPhysical Review Letters
Inspired by the possibility of emergent supersymmetry in critical random systems, we study a field theory model with a quartic potential of one superfield, possessing the Parisi-Sourlas supertranslation symmetry. Within perturbative ε expansion, we find nine nontrivial scale-invariant renormalization group fixed points, but only one of them is ...
Yu Nakayama
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Local conformal symmetry in non-Riemannian geometry and the origin of physical scales [PDF]

open access: diamondThe European Physical Journal C, 2017
11 pages; v2: matches published version in EPJC; new title, includes new sections on the coupling of matter fields to the extended gravitational ...
Marco de Cesare   +2 more
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Conformal Symmetry as a Template: Commensurate Scale Relations and Physics Renormalization Schemes [PDF]

open access: green, 1999
Commensurate scale relations are perturbative QCD predictions which relate observable to observable at fixed relative scale, such as the "generalized Crewther relation", which connects the Bjorken and Gross-Llewellyn Smith deep inelastic scattering sum rules to measurements of the e+ e- annihilation cross section.
Stanley J. Brodsky, Johan Rathsman
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The pseudo-conformal universe: scale invariance from spontaneous breaking of conformal symmetry [PDF]

open access: green, 2012
We present a novel theory of the very early universe which addresses the traditional horizon and flatness problems of big bang cosmology and predicts a scale invariant spectrum of perturbations.
Kurt Hinterbichler, Justin Khoury
openalex   +3 more sources

Poincaré, Scale and Conformal Symmetries: Gauge Perspective and Cosmological Ramifications [PDF]

open access: green, 2016
PhD Thesis, 206 pages, 5 figures. Abstract shorter than in the file due to arXiv limit of 1920 characters. Based on arXiv:1212.4148, arXiv:1411.5613, arXiv:1510.07589, arXiv:1510.08042, arXiv:1601.03046, arXiv:1603 ...
Georgios K. Karananas
openalex   +3 more sources

Conformal Symmetry as a Template:Commensurate Scale Relations and Physical Renormalization Schemes [PDF]

open access: green, 1999
Commensurate scale relations are perturbative QCD predictions which relate observable to observable at fixed relative scale, such as the ''generalized Crewther relation'', which connects the Bjorken and Gross-Llewellyn Smith deep inelastic scattering sum rules to measurements of the e{sup +}e{sup {minus}} annihilation cross section.
Stanley J. Brodsky
openalex   +4 more sources

Scale Invariant Parity Doublet Model: Interplay between the Vector Mesons and the Dilatons /Parity Doubling in Dense Baryonic Matter as an Emergent Symmetry and Pseudo-Conformal Model

open access: green
The star matter composed of nucleons deep inside the compact star like a neutron star is believed to be very dense and various new types of concepts and physical phenomena due to the nontrivial strong correlations are naturally expected. Peudo-conformality in dense star matter has been discussed recently assuming the hidden underlying scale symmetry ...
Hyun Kyu Lee
openalex   +3 more sources

Finite-size scaling and conformal symmetry around the (2 + 1)-dimensional SU(2) deconfinement phase transition

open access: closedNuclear Physics B, 1991
Abstract Conformal invariance at a second-order phase transition yields an exact finite-size scaling theory on a two-dimensional cylindrical geometry. We combine this two-dimensional conformal field theory with a numerical investigation of the deconfinement phase transition of (2 + 1)-dimensional SU(2) lattice gauge theory.
Jesper Heile Christensen, P.H. Damgaard
openalex   +2 more sources

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