24 citations · 31 across the 11 of their papers we have counts for
11 papers
Effective interactions from q-deformed inspired transformations
V. S. Timoteo, C. L. Lima
From the mass term for the transformed quark fields, we obtain effective contact interactions of the NJL type. The parameters of the model that maps a system of non-interacting tra…
Quantum spin tunneling of magnetization in small ferromagnetic particles
D. Galetti, B. M. Pimentel, C. L. Lima +1
A new quantum approach is presented that can account for the description of small ferromagnetic particles magnetization tunneling. An estimate of the saturation value of an externa…
A q-deformed NJL model at finite temperature: chiral symmetry restoration and pion properties
V. S. Timoteo, C. L. Lima
We review the implementation of a q-deformed fermionic algebra in the Nambu--Jona-Lasinio model (NJL). The gap equations obtained from a deformed condensate as well as from the def…
Quantum spin tunneling in a soluble quasi-spin model: An angle-based potential description
D. Galetti, C. L. Lima, B. M. Pimentel
We propose an approach which allows to construct and use a potential function written in terms of an angle variable to describe interacting spin systems. We show how this can be im…
Are there thin accretion disks?
Cesar Meirelles Filho, Celso Luiz Lima, Hideaki Miyake
Total and internal energy requirements set constraints on the allowable temperature on the disk. In a gas pressure dominated disk, they lead to a cooling rate that decreases with t…
Pion production in the inner disk around Cygnus X-1
Cesar Meirelles Filho, Celso L. Lima, Hideaki Miyake +1
Neutron production via ^{4}He breakup and p(p, n{pi}^+)p is considered in the innermost region of an accretion disk surrounding a Kerr Black Hole. These reactions occur in a plasma…