Zobrazeno 1 - 10
of 701
pro vyhledávání: '"Cavalcanti, E."'
Autor:
Alvarenga, N. M., Cavalcanti, E., Linhares, C. A., Lourenço, J. A., Mahon, J. R. P., Reis, F.
Publikováno v:
Braz. J. Phys. 54, 215 (2024)
We investigate the non-perturbative effects of a deformation of the Mathieu differential equation consistent with $\mathcal{PT}$ symmetry. First, we develop a connection between the non-Hermitian and Hermitian scenarios by a reparameterization in the
Externí odkaz:
http://arxiv.org/abs/2207.14407
Autor:
Cavalcanti, E., Malbouisson, A. P. C.
We present an alternative route to investigate quantum forces in a cavity, for both a free scalar field and a free fermionic field. Considering a generalized Matsubara procedure, we compute the quantum pressure on the boundaries of a compactified spa
Externí odkaz:
http://arxiv.org/abs/2206.15220
Autor:
Maria Isabel Collasius Malta, Hugo Antonio Cavalcanti e Silva, Paulo Roberto Sá de Oliveira Neto, Rafael Gleymir Casanova da Silva, Walter Leandro Cordeiro da Silva Filho, Jedaías Januário da Silva, Severino Leopoldino Urtiga Filho, Magda Rosângela Santos Vieira
Publikováno v:
Materials Research, Vol 27, Iss suppl 1 (2024)
Superhydrophobic surfaces offer innovative solutions, particularly in water/oil separation systems, as they repel water and attract oil, enabling efficient separation. The study aimed to analyze coatings developed on galvanized steel and aluminum, re
Externí odkaz:
https://doaj.org/article/f8993081fb9d47d98f70f148b9b7554b
We propose a non-Hermitian deformation of the Mathieu equation that preserves $\mathcal{PT}$ symmetry and study its spectrum and the transition from $\mathcal{PT}$-unbroken to $\mathcal{PT}$-broken phases. We show that our model not only reproduces b
Externí odkaz:
http://arxiv.org/abs/2204.13350
Publikováno v:
Revista do Direito Público, Vol 18, Iss 2 (2023)
A escassez de água potável vem se revelando um problema que afeta inúmeros países no mundo inteiro, sendo, porém, mais acentuada em regiões carentes de infraestrutura. O presente estudo busca discutir o problema do acesso à água na região no
Externí odkaz:
https://doaj.org/article/789e78ebd3dc4338bb3715caaad3de98
Autor:
Pearl, J. C., Cavalcanti, E. G.
Publikováno v:
Quantum 5, 518 (2021)
In a recent work, it was shown by one of us (EGC) that Bell-Kochen-Specker inequality violations in phenomena satisfying the no-disturbance condition (a generalisation of the no-signalling condition) cannot in general be explained with a faithful cla
Externí odkaz:
http://arxiv.org/abs/1909.05434
Publikováno v:
Phys. Rev. E 101, 060101 (2020)
The standard formulation of thermostatistics, being based on the Boltzmann-Gibbs distribution and logarithmic Shannon entropy, describes idealized uncorrelated systems with extensive energies and short-range interactions. In this letter, we use the f
Externí odkaz:
http://arxiv.org/abs/1907.01855
Publikováno v:
Phys. Rev. D 100, 025008 (2019)
Here we understand \textit{dimensional reduction} as a procedure to obtain an effective model in $D-1$ dimensions that is related to the original model in $D$ dimensions. To explore this concept we use both a self-interacting fermionic model and self
Externí odkaz:
http://arxiv.org/abs/1904.10833
Publikováno v:
Phys. Rev. D 99, 025007 (2019)
We investigate the process of dimensional reduction of one spatial dimension in a thermal scalar field model defined in $D$ dimensions (inverse temperature and $D-1$ spatial dimensions). We obtain that a thermal model in $D$ dimensions with one of th
Externí odkaz:
http://arxiv.org/abs/1812.07087
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