Zobrazeno 1 - 10
of 9 008
pro vyhledávání: '"LIMA, J"'
In the present work, evaporation of a black hole immersed in a de Sitter environment is considered. Vaidya-de Sitter spacetime is used to model the process in a scenario of accelerated expansion of the Universe. The role of observers is highlighted i
Externí odkaz:
http://arxiv.org/abs/2411.08114
We consider the massless Rarita-Schwinger (RS) LV QED. In this theory, we introduce the gauge fixing to obtain the propagator for the RS field, and calculate the Carroll-Field-Jackiw term, which turns out to be finite and ambiguous, and only in one c
Externí odkaz:
http://arxiv.org/abs/2410.01550
We theoretically investigate the quantum percolation problem on Lieb lattices in two and three dimensions. We study the statistics of the energy levels through random matrix theory, and determine the level spacing distributions, which, with the aid o
Externí odkaz:
http://arxiv.org/abs/2409.04610
The entire classical cosmological history between two extreme de Sitter vacuum solutions is discussed based on Einstein's equations and non-equilibrium thermodynamics. The initial non-singular de Sitter state is characterised by a very high energy sc
Externí odkaz:
http://arxiv.org/abs/2408.16911
The potential role of a cosmic vacuum dark component in the properties of neutron stars is investigated. It is assumed that the static, spherically symmetric distribution of matter within neutron stars is supported by two distinct components: ordinar
Externí odkaz:
http://arxiv.org/abs/2408.01006
The main purpose of this paper is to provide formulas for the Hilbert-Kunz multiplicity of fiber products and idealization rings. We calculate the Hilbert-Kunz multiplicity of a fiber product $R \times_T S$, with $R$, $S$ and $T$ being Noetherian loc
Externí odkaz:
http://arxiv.org/abs/2405.15075
Autor:
Freitas, T. H., Lima, J. A.
In this paper we introduce new classes of gluing of complex analytic spaces germs, called weakly large, large and strongly large. We give a description of their Poincar\'e series and, as applications, we give numerical criteria to determine when thes
Externí odkaz:
http://arxiv.org/abs/2402.12904
Autor:
Freitas, T. H., Lima, J. A.
The present paper deals with the investigation of the structure of general fiber product rings $R\times_TS$, where $R$, $S$ and $T$ are local rings with common residue field. We show that the Poincar\'e series of any $R$-module over the fiber product
Externí odkaz:
http://arxiv.org/abs/2402.12125
Autor:
Jorge-Pérez, V. H., Lima, J. A.
Let $M$ be a finitely generated module over a local ring $(R,\mathfrak{m})$. By $\mathcal{S}_j(M)$, we denote the $j$th symmetric power of $M$ ($j$th graded component of the symmetric algebra $\mathcal{S}_R(M)$). The purpose of this paper is to inves
Externí odkaz:
http://arxiv.org/abs/2402.09309