Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Thibes, Ronaldo"'
We discuss a general prototypical constrained Hamiltonian system with a broad application in quantum field theory and similar contexts where dynamics is defined through a functional action obeying a stationarity principle. The prototypical model amou
Externí odkaz:
http://arxiv.org/abs/2406.01543
Autor:
Ambrósio, Gabriella V., Andrade, Michelly S., Alves, Paulo R. F., Costa, Cleber N., Neto, Jorge Ananias, Thibes, Ronaldo
We examine the potential of Kaniadakis entropy to describe black-hole entropy, proposing a modified version accounting for black hole thermodynamics. We posit a conjecture that the Kaniadakis entropy precisely describes the Bekenstein-Hawking black-h
Externí odkaz:
http://arxiv.org/abs/2405.14799
Autor:
Ambrosio, Gabriella V., Costa, Cleber N., Alves, Paulo R. F., Neto, Jorge Ananias, Thibes, Ronaldo
We analyze the Hamiltonian structure of an extended chiral bosons theory in which the self-dual constraint is introduced via a control $\alpha$-parameter. The system has two second-class constraints in the non-critical regime and an additional one in
Externí odkaz:
http://arxiv.org/abs/2311.13039
Autor:
Costa, Cleber N., Ambrósio, Gabriella V., Alves, Paulo R. F., Neto, Jorge Ananias, Thibes, Ronaldo
We use the gauge unfixing (GU) formalism framework in a two dimensional noncommutative chiral bosons (NCCB) model to disclose new hidden symmetries. That amounts to converting a second-class system to a first-class one without adding any extra degree
Externí odkaz:
http://arxiv.org/abs/2307.00396
Autor:
Ambrosio, Gabriella V., Costa, Cleber N., Alves, Paulo R. F., Abreu, Everton M. C., Neto, Jorge Ananias, Thibes, Ronaldo
In this paper, the Hamiltonian structure of the bosonized chiral Schwinger model (BCSM) is analyzed. From the consistency condition of the constraints obtained from the Dirac method, we can observe that this model presents, for certain values of the
Externí odkaz:
http://arxiv.org/abs/2302.10134
We contextualize the improved gauge-unfixing (GU) formalism within a rather general prototypical second-class system, obtaining a corresponding first-class equivalent description enjoying gauge invariance which can be applied to several situations. T
Externí odkaz:
http://arxiv.org/abs/2210.16927
We scrutinize the many known forms of BRST symmetries, as well as some new ones, realized within a prototypical first-class system. Similarities and differences among ordinary BRST, anti-BRST, dual-BRST and anti-dual-BRST symmetries are highlighted a
Externí odkaz:
http://arxiv.org/abs/2210.15583
We perform the BFV-BRST quantization of the fourth-order Pais-Uhlenbeck oscillator (PUO). We show that although the PUO is not naturally constrained in the sense of Dirac-Bergmann, it is possible to profit from the introduction of suitable constraint
Externí odkaz:
http://arxiv.org/abs/2202.00715
Autor:
Pandey, Vipul Kumar, Thibes, Ronaldo
We apply the BFFT formalism to a prototypical second-class system, aiming to convert its constraints from second- to first-class. The proposed system admits a consistent initial set of second-class constraints and an open potential function providing
Externí odkaz:
http://arxiv.org/abs/2103.05626
Autor:
Thibes, Ronaldo
We propose a natural family of higher-order partial differential equations generalizing the second-order Klein-Gordon equation. We characterize the associated model by means of a generalized action for a scalar field, containing higher-derivative ter
Externí odkaz:
http://arxiv.org/abs/2011.02567