Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Morgado W"'
Autor:
Nascimento, E. S., Morgado, W. A. M.
We study a Langevin-like model which describes an inertial particle in a one-dimensional harmonic potential and subjected to two heat baths and one athermal environment. The thermal noises are white and Gaussian, and the temperatures of heat reservoi
Externí odkaz:
http://arxiv.org/abs/2104.01153
Publikováno v:
Phys. Rev. E 103, 022108 (2021)
We explore the role a non-Markovian memory kernel plays on information exchange and entropy production in the context of a external work protocol. The Jarzynski Equality is shown to hold for both the harmonic and the non-harmonic models. We observe t
Externí odkaz:
http://arxiv.org/abs/2009.14290
Autor:
Costa-Filho, J. I., Lima, R. B. B., Paiva, R. R., Soares, P. M., Morgado, W. A. M., Franco, R. Lo, Soares-Pinto, D. O.
Publikováno v:
Phys. Rev. A 95, 052126 (2017)
The non-Markovian nature of quantum systems recently turned to be a key subject for investigations on open quantum system dynamics. Many studies, from its theoretical grounding to its usefulness as a resource for quantum information processing and ex
Externí odkaz:
http://arxiv.org/abs/1612.02628
Autor:
Morgado, W. A. M., Soares-Pinto, D. O.
Publikováno v:
Phys. Rev. E 82, 021112 (2010)
We obtain the exact nonequilibrium work generating function (NEWGF), for a small system consisting of a massive Brownian particle connected to internal and external springs. The external work is provided to the system for a finite time interval. The
Externí odkaz:
http://arxiv.org/abs/1008.3400
Autor:
Morgado, W. A. M., Soares-Pinto, D. O.
Publikováno v:
Phys. Rev. E 79, 051116 (2009)
In this paper, we study exactly the thermal conductance for a low dimensional system represented by two coupled massive Brownian particles, both directly and via a Green-Kubo expression. Both approaches give exactly the same result. We also obtain ex
Externí odkaz:
http://arxiv.org/abs/0906.4583
Autor:
Anteneodo, C., Morgado, W. A. M.
Publikováno v:
Phys. Rev. Lett. 99, 180602 (2007)
The spatial coverage produced by a single discrete-time random walk, with asymmetric jump probability $p\neq 1/2$ and non-uniform steps, moving on an infinite one-dimensional lattice is investigated. Analytical calculations are complemented with Mont
Externí odkaz:
http://arxiv.org/abs/0801.4005
Autor:
Soares-Pinto, D. O., Morgado, W. A. M.
Publikováno v:
Phys. Rev. E 77, 011103 (2008)
Using a time-averaging technique we obtain exactly the probability distribution for position and velocity of a Brownian particle under the influence of two heat baths at different temperatures. These baths are expressed by a white noise term, represe
Externí odkaz:
http://arxiv.org/abs/0712.2839
Autor:
Thiesen, E., Morgado, W. A. M.
Publikováno v:
Physical Review E vol 73, 051303 (2006)
We study the equilibrium behavior of one-dimensional granular clusters and one-particle granular gases for a variety of velocity dependent coefficients of restitution $r$. We obtain equations describing of the long time behavior for the cluster's pre
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605422
Autor:
Soares-Pinto, D. O., Morgado, W. A. M.
Publikováno v:
Physica A vol. 365 (2006) 289-299
We propose a method to obtain the equilibrium distribution for positions and velocities of a one-dimensional particle via time-averaging and Laplace transformations. We apply it to the case of a damped harmonic oscillator in contact with a thermal ba
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601419
Publikováno v:
Physica A 342, 22-28 (2004).
A simple model for a granular ratchet corresponding to a single grain bouncing off a vertically vibrating sawtooth-like base is studied. Depending on the vibration strength, the sawtooth roughness and the restitution coefficient, horizontal transport
Externí odkaz:
http://arxiv.org/abs/cond-mat/0312412