Zobrazeno 1 - 10
of 3 559
pro vyhledávání: '"Alberto, S."'
In this paper, we present a theory for gravity coupled with scalar, SU$(n)$ and spinor fields on manifolds with null-boundary. We perform the symplectic reduction of the space of boundary fields and give the constraints of the theory in terms of loca
Externí odkaz:
http://arxiv.org/abs/2401.09337
Publikováno v:
Class. Quantum Grav. 41 155001 (2024)
We study a family of (possibly non topological) deformations of $BF$ theory for the Lie algebra obtained by quadratic extension of $\mathfrak{so}(3,1)$ by an orthogonal module. The resulting theory, called quadratically extended General Relativity (q
Externí odkaz:
http://arxiv.org/abs/2310.01877
In this article a description of the reduced phase space of the standard model coupled to gravity is given. For space or time-like boundaries this is achieved as the reduction of a symplectic space with respect to a coisotropic submanifold and with t
Externí odkaz:
http://arxiv.org/abs/2307.14955
This note gives an overview of the BV formalism in its various incarnations and applications.
Comment: 16 pages. Article commissioned by the Encyclopedia of Mathematical Physics
Comment: 16 pages. Article commissioned by the Encyclopedia of Mathematical Physics
Externí odkaz:
http://arxiv.org/abs/2307.07761
Autor:
Cattaneo, Alberto S.
This explanatory note, based on the geometrical method by Kijovski and Tulczyjew, describes the construction of the reduced phase space of Lagrangian field theories, i.e., the correct space of initial conditions with its symplectic structure. Several
Externí odkaz:
http://arxiv.org/abs/2307.04666
Autor:
Frederico Nanini, Philipe G. C. Souza, Everton P. Soliman, Edival A. V. Zauza, Maurício M. Domingues, Fábio A. Santos, Carlos F. Wilcken, Ricardo S. da Silva, Alberto S. Corrêa
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Thyrinteina arnobia (Lepidoptera: Geometridae) is a native American species. Despite its historical importance as an insect pest in Eucalyptus plantations, more information is needed regarding the population diversity, demography, and climat
Externí odkaz:
https://doaj.org/article/c1e085c3056a4c18a23cd388dc0c047b
Autor:
Foltyn, Marek, Norowski, Konrad, Wyszyński, Michał J., de Arruda, Alberto S., Milošević, Milorad V., Zgirski, Maciej
Publikováno v:
Phys. Rev. Applied 19, 044073 (2023)
We realize a superconducting nanodevice in which vortex traps in the form of an aluminum square are integrated with a Dayem nanobridge. We perform field-cooling of the traps arriving to different vortex configurations, dependent on the applied magnet
Externí odkaz:
http://arxiv.org/abs/2306.01555
We present general reduction procedures for Courant, Dirac and generalized complex structures, in particular when a group of symmetries is acting. We do so by taking the graded symplectic viewpoint on Courant algebroids and carrying out graded symple
Externí odkaz:
http://arxiv.org/abs/2306.01508
Publikováno v:
Physycal Review B 108, 045409 (2023)
Using many-body perturbation theory and density functional perturbation theory, we study the vibrational spectra of the internal stretch (IS) mode of CO on Pd(111) for the bridge and hollow adsorption structures that are experimentally identified at
Externí odkaz:
http://arxiv.org/abs/2304.10845