Zobrazeno 1 - 10
of 160
pro vyhledávání: '"Ghilencea, D. M."'
Autor:
Ghilencea, D. M.
We review recent developments in physical implications of Weyl conformal geometry. The associated Weyl quadratic gravity is a gauge theory of the Weyl group of dilatations and Poincar\'e symmetry. Weyl geometry is defined by equivalence classes of th
Externí odkaz:
http://arxiv.org/abs/2408.07160
Autor:
Ghilencea, D. M.
We construct the analogue of the Dirac-Born-Infeld (DBI) action in Weyl conformal geometry in $d$ dimensions and obtain a general theory of gravity with Weyl gauge symmetry of dilatations (Weyl-DBI). This is done in the {\it Weyl gauge covariant} for
Externí odkaz:
http://arxiv.org/abs/2407.18173
We review (non-supersymmetric) gauge theories of four-dimensional space-time symmetries and their quadratic action. The only true gauge theory of such a symmetry (with a physical gauge boson) that has an exact geometric interpretation, generates Eins
Externí odkaz:
http://arxiv.org/abs/2312.13384
Autor:
Ghilencea, D. M.
Weyl conformal geometry is a gauge theory of scale invariance that naturally brings together the Standard Model (SM) and Einstein gravity. The SM embedding in this geometry is possible without new degrees of freedom beyond SM and Weyl geometry, while
Externí odkaz:
http://arxiv.org/abs/2309.11372
Autor:
Ghilencea, D. M., Hill, C. T.
We discuss comparatively local versus gauged Weyl symmetry beyond Standard Model (SM) and Einstein gravity and their geometric interpretation. The SM and Einstein gravity admit a natural embedding in Weyl integrable geometry which is a special limit
Externí odkaz:
http://arxiv.org/abs/2303.02515
Autor:
Ghilencea, D. M.
We discuss gauge theories of scale invariance beyond the Standard Model (SM) and Einstein gravity. A consequence of gauging this symmetry is that their underlying 4D geometry is non-metric ($\nabla_\mu g_{\alpha\beta}\not=0$). Examples of such theori
Externí odkaz:
http://arxiv.org/abs/2203.05381
Autor:
Ghilencea, D. M., Harko, T.
We discuss the cosmological evolution of the Weyl conformal geometry and its associated Weyl quadratic gravity. The Einstein gravity (with a positive cosmological constant) is recovered in the spontaneously broken phase of Weyl gravity; this happens
Externí odkaz:
http://arxiv.org/abs/2110.07056
Autor:
Ghilencea, D. M.
We study the Standard Model (SM) in Weyl conformal geometry. This embedding is natural and truly minimal {\it with no new fields} required beyond the SM spectrum and Weyl geometry. The action inherits a gauged scale symmetry $D(1)$ (known as Weyl gau
Externí odkaz:
http://arxiv.org/abs/2104.15118
Autor:
Condeescu, C.1 (AUTHOR) ccezar@theory.nipne.ro, Ghilencea, D. M.1 (AUTHOR), Micu, A.1 (AUTHOR)
Publikováno v:
European Physical Journal C -- Particles & Fields. Mar2024, Vol. 84 Issue 3, p1-9. 9p.
Autor:
Ghilencea, D. M.
We present a comparative study of inflation in two theories of quadratic gravity with {\it gauged} scale symmetry: 1) the original Weyl quadratic gravity and 2) the theory defined by a similar action but in the Palatini approach obtained by replacing
Externí odkaz:
http://arxiv.org/abs/2007.14733