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21 papers · 1 filter
Comet 29P/Schwassmann-Wachmann 1 dust environment from photometric observation at the SOAR Telescope
E. Picazzio, I. V. Luk'yanyk, O. V. Ivanova +4
We report photometric observations of comet 29P/Schwassmann-Wachmann 1 made on August 12, 2016 with the broadband B, V, R and I filters and the SOAR 4.1-meter telescope (Chile). We…
Photometric and spectroscopic analysis of Comet 29P/Schwassmann-Wachmann 1 activity
O. V. Ivanova, I. V. Luk'yanyk, N. N. Kiselev +5
We carried out photometric and spectroscopic observations of comet 29P/Schwassmann-Wachmann 1 at the 6-m BTA telescope (SAO RAS, Russia) and the 1.6-m telescope of the National Lab…
Dirichlet boundary condition for the Lee-Wick-like scalar model
L. H. C. Borges, A. A. Nogueira, E. H. Rodrigues +1
Lee-Wick-like scalar model near a Dirichlet plate is considered in this work. The modified propagator for the scalar field due to the presence of a Dirichlet boundary is computed,…
The Most General Propagator in Quantum Field Theory
Luca Fabbri, Rodolfo José Bueno Rogerio
One of the most important mathematical tools necessary for Quantum Field Theory calculations is the field propagator. Applications are always done in terms of plane waves and altho…
Space and time ambiguities in vacuum electrodynamics
Érico Goulart, Eduardo Bittencourt
It is shown that every regular electromagnetic field in vacuum identically satisfy Maxwell equations in a new manifold where the roles of space and time have been exchanged. The ne…
Regular spinors and fermionic fields
R. J. Bueno Rogerio, J. M. Hoff da Silva, C. H. Coronado Villalobos
Bearing in mind the Lounesto spinor classification, we connect the expansion coefficients of well behaved fermionic quantum field, i.e., a local field within a full Lorentz covaria…