Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Pereira, Antonio D."'
The Refined Gribov-Zwanziger (RGZ) action in the Landau gauge provides a local and renormalizable framework to account for the existence of infinitesimal Gribov copies in the path integral together with other relevant infrared effects such as the for
Externí odkaz:
http://arxiv.org/abs/2405.07779
We introduce a dually-weighted multi-matrix model that for a suitable choice of weights reproduce two-dimensional Causal Dynamical Triangulations (CDT) coupled to the Ising model. When Ising degrees of freedom are removed, this model corresponds to t
Externí odkaz:
http://arxiv.org/abs/2310.13503
Publikováno v:
Physical Review D 108, 045012 (2023)
We study the mechanism of chiral symmetry breaking for fermionic systems in a gravitational background with curvature and torsion. The analysis is based on a scale-dependent effective potential derived from a bosonized version of the Nambu-Jona-Lasin
Externí odkaz:
http://arxiv.org/abs/2306.16490
The Refined Gribov-Zwanziger (RGZ) action in the Landau gauge accounts for the existence of infinitesimal Gribov copies as well as the dynamical formation of condensates in the infrared of Euclidean Yang-Mills theories. We couple scalar fields to the
Externí odkaz:
http://arxiv.org/abs/2302.04827
Autor:
de Boer, Jan, Dittrich, Bianca, Eichhorn, Astrid, Giddings, Steven B., Gielen, Steffen, Liberati, Stefano, Livine, Etera R., Oriti, Daniele, Papadodimas, Kyriakos, Pereira, Antonio D., Sakellariadou, Mairi, Surya, Sumati, Verlinde, Herman
Understanding the quantum nature of spacetime and gravity remains one of the most ambitious goals of theoretical physics. It promises to provide key new insights into fundamental particle theory, astrophysics, cosmology and the foundations of physics
Externí odkaz:
http://arxiv.org/abs/2207.10618
Wetterich's equation provides a powerful tool for investigating the existence and universal properties of renormalization group fixed points exhibiting quantum scale invariance. Motivated by recent works on asymptotically safe scalar-tensor theories,
Externí odkaz:
http://arxiv.org/abs/2207.06749
We introduce a background gauge akin to the Landau-DeWitt gauge but deformed by the presence of a gauge parameter for the quantization of Euclidean Yang-Mills theories. In the limit where the background field vanishes, standard linear covariant gauge
Externí odkaz:
http://arxiv.org/abs/2206.04103
Asymptotic Safety provides an elegant mechanism for obtaining a consistent high-energy completion of gravity and gravity-matter systems. Following the initial idea by Steven Weinberg, the construction builds on an interacting fixed point of the theor
Externí odkaz:
http://arxiv.org/abs/2110.09566
Publikováno v:
Phys. Rev. D 104, 045007 (2021)
Recent works have explored non-perturbative effects due to the existence of (infinitesimal) Gribov copies in Yang-Mills-Chern-Simons theories in three Euclidean dimensions. In particular, the removal of such copies modify the gauge field propagator b
Externí odkaz:
http://arxiv.org/abs/2106.16205
We formally prove the existence of a quantization procedure that makes the path integral of a general diffeomorphism-invariant theory of gravity, with fixed total spacetime volume, equivalent to that of its unimodular version. This is achieved by mea
Externí odkaz:
http://arxiv.org/abs/2105.13886