Zobrazeno 1 - 10
of 489
pro vyhledávání: '"A. A. Caparica"'
In this work, we study and evaluate the impact of a periodic spin-lattice coupling in an Ising-like system on a 2D triangular lattice. Our proposed simple Hamiltonian considers this additional interaction as an effect of preferential phonon propagati
Externí odkaz:
http://arxiv.org/abs/2305.03127
Boltzmann's microcanonical entropy is the link between statistical physics and thermodynamics, forasmuch as the behavior of any thermodynamic quantity is directly related to the number of microscopic configurations. Accordingly, in this work, we inve
Externí odkaz:
http://arxiv.org/abs/2211.12946
Here we present a new perspective to the breakdown of ferromagnetic order in two-dimensional spin-lattice models employing the rotation of the underlying lattice. Using an Ising spin system on a square lattice as a prototype, we demonstrate that an a
Externí odkaz:
http://arxiv.org/abs/2108.07239
Autor:
Celira Caparica Santos
Publikováno v:
Reflexão, Vol 3, Iss 11/12 (2024)
Os trabalhos expostos nesta monografia se restringem, propositadamente, aos escritos de Anísio Teixeira sobre a Universidade. Esta restrição foi feita levando-se em conta que, no tempo disponível, um estudo mais abrangente poderia tornar-se muito
Externí odkaz:
https://doaj.org/article/8c3cb260f68641d881502be1beff175b
We investigate the critical behavior of the two-dimensional spin-$1$ Baxter-Wu model in a crystal field using entropic sampling simulations with the joint density of states. We obtain the temperature-crystal field phase diagram, which includes a tetr
Externí odkaz:
http://arxiv.org/abs/2008.13037
In this work, we investigate the Bell-Lavis model using entropic simulations for several values of the energy parameters. The $T\times\mu$ phase diagram and the ground state configurations are analyzed thoroughly. Besides, we examine the particle den
Externí odkaz:
http://arxiv.org/abs/2008.01028
The statement that any phase transition is related to the appearance or disappearance of long-range spatial correlations precludes a finite transition temperature in one-dimensional (1D) systems. In this paper we demonstrate that the 1D Ising model w
Externí odkaz:
http://arxiv.org/abs/1911.05475
Akademický článek
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In this work we investigate the order of the phase transition of the spin-1 Baxter-Wu model. We used extensive entropic simulations to describe the behavior of quantities which reveal the order of the phase transition. We applyied finite-sizing scali
Externí odkaz:
http://arxiv.org/abs/1808.06701
Publikováno v:
Phys. Rev. E 100, 032141 (2019)
A classic three-dimensional spin model, based upon the Baxter-Wu scheme, is presented. It is found, by entropic sampling simulations, that the behavior of the energy and magnetization fourth-order cumulants points out to a first order phase transitio
Externí odkaz:
http://arxiv.org/abs/1808.06702