Zobrazeno 1 - 10
of 300
pro vyhledávání: '"de Oliveira, Mário j."'
Autor:
de Oliveira, Mário J.
We propose a stochastic dynamics to be associated to a deterministic motion defined by a set of first order differential equation. The transitions that defined the stochastic dynamics are unidirectional and the rates are equal to the absolute value o
Externí odkaz:
http://arxiv.org/abs/2411.07824
Autor:
de Oliveira, Mário J.
We derive the expression for the entropy production for stochastic dynamics defined on a continuous space of states containing unidirectional transitions. The expression is derived by taking the continuous limit of a stochastic dynamics on a discrete
Externí odkaz:
http://arxiv.org/abs/2409.02321
Autor:
Tomè, Tânia, de Oliveira, Mário J.
We investigate the thermodynamics as well as the population dynamics of ecosystems based on a stochastic approach in which the number of individuals of the several species of the ecosystem are treated as stochastic variables. The several species are
Externí odkaz:
http://arxiv.org/abs/2405.19535
Autor:
Tome, Tânia, de Oliveira, Mário J.
We propose an expression for the production of entropy for system described by a stochastic dynamics which is appropriate for the case where the reverse transition rate vanishes but the forward transition is nonzero. The expression is positive define
Externí odkaz:
http://arxiv.org/abs/2405.06751
Autor:
de Oliveira, Mário j.
We show that the dynamics of a quantum system can be represented by the dynamics of an underlying classical systems obeying the Hamilton equations of motion. This is achieved by transforming the phase space of dimension $2n$ into a Hilbert space of d
Externí odkaz:
http://arxiv.org/abs/2308.00151
Autor:
de Oliveira, Mário J.
From classical stochastic equations of motion we derive the quantum Schr\"odinger equation. The derivation is carried out by assuming that the real and imaginary parts of the wave function $\phi$ are proportional to the coordinates and momenta associ
Externí odkaz:
http://arxiv.org/abs/2307.06461
The majority vote model is one of the simplest opinion systems yielding distinct phase transitions and has garnered significant interest in recent years. However, its original formulation is not, in general, thermodynamically consistent, precluding t
Externí odkaz:
http://arxiv.org/abs/2306.09235
Autor:
de Oliveira, Mário J.
We show that the quantum Fokker-Planck equation, obtained by a canonical quantization of its classical version, can be transformed into an equation of the Lindblad form. This result allows us to conclude that the quantum Fokker-Planck equation preser
Externí odkaz:
http://arxiv.org/abs/2305.05805
We show that models of opinion formation and dissemination in a community of individuals can be framed within stochastic thermodynamics from which we can build a nonequilibrium thermodynamics of opinion dynamics. This is accomplished by decomposing t
Externí odkaz:
http://arxiv.org/abs/2212.07268
Autor:
Tomé, Tânia, de Oliveira, Mário J.
We study closed systems of particles that are subject to stochastic forces in addition to the conservative forces. The stochastic equations of motion are set up in such a way that the energy is strictly conserved at all times. To ensure this conserva
Externí odkaz:
http://arxiv.org/abs/2209.05545