Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Giaccari, Stefano"'
The Moyal-Higher-Spin (MHS) formalism, involving fields dependent on spacetime and auxiliary coordinates, is an approach to studying higher spin (HS)-like models. To determine the particle content of the MHS model of the Yang-Mills type, we calculate
Externí odkaz:
http://arxiv.org/abs/2409.02679
Publikováno v:
Eur. Phys. J. C 84, 961 (2024)
We study how the number of degrees of freedom in Weyl conformal gravity runs with the energy scale from the UV fixed point. To this end we employ two approaches. First, we utilize the Fradkin--Tseytlin prescription for the number of degrees of freedo
Externí odkaz:
http://arxiv.org/abs/2406.18096
We provide transformation matrices for arbitrary Lorentz transformations of multidimensional Hermite functions in any dimension. These serve as a valuable tool for analyzing spacetime properties of MHS fields, and aid in the description of the relati
Externí odkaz:
http://arxiv.org/abs/2405.00404
Autor:
Giaccari, Stefano, Kroyter, Michael
Publikováno v:
JHEP05(2024)017
We reexamine democratic open string field theories, namely, theories in which string fields are not constrained to a single picture number and picture changing is obtained as a gauge transformation. We describe several possibilities for regular free
Externí odkaz:
http://arxiv.org/abs/2403.01552
We consider the topological defect lines commuting with the spectral flow and the $\mathcal{N}=(4,4)$ superconformal symmetry in two dimensional non-linear sigma models on K3. By studying their fusion with boundary states, we derive a number of gener
Externí odkaz:
http://arxiv.org/abs/2402.08719
Autor:
Giaccari, Stefano, Volpato, Roberto
In quantum field theory, an orbifold is a way to obtain a new theory from an old one by gauging a finite global symmetry. This definition of orbifold does not make sense for quantum gravity theories, that admit (conjecturally) no global symmetries. I
Externí odkaz:
http://arxiv.org/abs/2210.10034
Autor:
Rachwał, Lesław, Giaccari, Stefano
Publikováno v:
Journal of Physics: Conference Series 1956 (2021) 012012
In this paper, we introduce and motivate the studies of Quantum Weyl Gravity (also known as Conformal Gravity). We discuss some appealing features of this theory both on classical and quantum level. The construction of the quantum theory is described
Externí odkaz:
http://arxiv.org/abs/2107.07033
We analyze a novel approach to gauging rigid higher derivative (higher spin) symmetries of free relativistic actions defined on flat spacetime, building on the formalism originally developed by Bonora et al. and Bekaert et al. in their studies of lin
Externí odkaz:
http://arxiv.org/abs/2102.09254
Autor:
Bonora, Loriano, Giaccari, Stefano
We introduce the supersymmetric version of YM-like theories with infinitely many spin fields in 4 dimension. The construction is carried out via the superfield method. The surprising feature of these models is that they describe in particular gauge a
Externí odkaz:
http://arxiv.org/abs/2011.00734
Publikováno v:
Universe 2020, 6(8), 123
With the help of a functional renormalization group, we study the dynamical breakdown of scale invariance in quantum Weyl gravity by starting from the UV fixed point that we assume to be Gaussian. To this end, we resort to two classes of Bach-flat ba
Externí odkaz:
http://arxiv.org/abs/2006.15596