Microscopic models of Brownian ratchets

2003 ◽  
Author(s):  
Christian Van den Broeck ◽  
Ryoichi Kawai ◽  
P. Meurs
Keyword(s):  
Microscopic Models ◽  
Brownian Ratchets

Thermodynamics of Flowing Systems: with Internal Microstructure

1994 ◽  
Author(s):  
Antony N. Beris ◽  
Brian J. Edwards
Keyword(s):  
Free Energy ◽  
Theoretical Study ◽  
Flow Behavior ◽  
Irreversible Thermodynamics ◽  
Hamiltonian Mechanics ◽  
Complex Interplay ◽  
Microscopic Models ◽  
Flow Phenomena ◽  
The Subject ◽  
The Continuum

This much-needed monograph presents a systematic, step-by-step approach to the continuum modeling of flow phenomena exhibited within materials endowed with a complex internal microstructure, such as polymers and liquid crystals. By combining the principles of Hamiltonian mechanics with those of irreversible thermodynamics, Antony N. Beris and Brian J. Edwards, renowned authorities on the subject, expertly describe the complex interplay between conservative and dissipative processes. Throughout the book, the authors emphasize the evaluation of the free energy--largely based on ideas from statistical mechanics--and how to fit the values of the phenomenological parameters against those of microscopic models. With Thermodynamics of Flowing Systems in hand, mathematicians, engineers, and physicists involved with the theoretical study of flow behavior in structurally complex media now have a superb, self-contained theoretical framework on which to base their modeling efforts.

scholarly journals Exothermic dark matter for XENON1T excess

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Hyun Min Lee
Keyword(s):  
Dark Matter ◽  
Mass Difference ◽  
Mass Splitting ◽  
Effective Theory ◽  
Recoil Energy ◽  
Detector Resolution ◽  
Atomic Excitation ◽  
Microscopic Models ◽  
Electron Recoil ◽  
Two Component

Abstract Motivated by the recent excess in the electron recoil from XENON1T experiment, we consider the possibility of exothermic dark matter, which is composed of two states with mass splitting. The heavier state down-scatters off the electron into the lighter state, making an appropriate recoil energy required for the Xenon excess even for the standard Maxwellian velocity distribution of dark matter. Accordingly, we determine the mass difference between two component states of dark matter to the peak electron recoil energy at about 2.5 keV up to the detector resolution, accounting for the recoil events over ER = 2 − 3 keV, which are most significant. We include the effects of the phase-space enhancement and the atomic excitation factor to calculate the required scattering cross section for the Xenon excess. We discuss the implications of dark matter interactions in the effective theory for exothermic dark matter and a massive Z′ mediator and provide microscopic models realizing the required dark matter and electron couplings to Z′.

Optimal control using microscopic models for a pollutant elimination problem

2017 ◽  
Vol 30 (1) ◽  
pp. 86-100 ◽  
Author(s):  
Yuecheng Yang ◽  
Xiaoming Hu
Keyword(s):  
Optimal Control ◽  
Microscopic Models ◽  
Elimination Problem

Global microscopic models for nuclear astrophysics applications

2005 ◽  
Vol 752 ◽  
pp. 560-569 ◽  
Author(s):  
S. Goriely
Keyword(s):  
Nuclear Astrophysics ◽  
Microscopic Models

Study of a macroscopic sliding contact thermal model from microscopic models

2001 ◽  
Vol 40 (7) ◽  
pp. 603-621 ◽  
Author(s):  
Patrice Chantrenne ◽  
Martin Raynaud
Keyword(s):  
Thermal Model ◽  
Sliding Contact ◽  
Microscopic Models

scholarly journals Microscopic models of traveling wave equations

1999 ◽  
Vol 121-122 ◽  
pp. 376-381 ◽  
Author(s):  
Eric Brunet ◽  
Bernard Derrida
Keyword(s):  
Traveling Wave ◽  
Wave Equations ◽  
Microscopic Models

scholarly journals STOCHASTIC RESONANCE IN A BROWNIAN RATCHET

2001 ◽  
Vol 01 (04) ◽  
pp. L239-L244 ◽  
Author(s):  
ANDREW ALLISON ◽  
DEREK ABBOTT
Keyword(s):  
Stochastic Resonance ◽  
Discrete Time ◽  
Brownian Ratchet ◽  
Present Evidence ◽  
Brownian Ratchets ◽  
Flow Of Information ◽  
Special Case ◽  
Physical Principles

We present evidence to support the idea that Stochastic Resonance (SR) and Brownian Ratchets (BR) share underlying physical principles. We examine the special case of a discrete-time ratchet, called Parrondo's games, and show that the addition of noise increases the rate of flow in the ratchet up to a certain point, after which the addition of further noise causes the rate of flow of decrease. We argue that the rate of flow of particles in a BR is analogous to the rate of flow of information in the case of SR.

scholarly journals Spin gases as microscopic models for non-Markovian decoherence

2005 ◽  
Vol 72 (5) ◽  
Author(s):  
L. Hartmann ◽  
J. Calsamiglia ◽  
W. Dür ◽  
H.-J. Briegel
Keyword(s):  
Microscopic Models

scholarly journals Microscopic models of quantum-jump superoperators

2005 ◽  
Vol 72 (2) ◽  
Author(s):  
A. V. Dodonov ◽  
S. S. Mizrahi ◽  
V. V. Dodonov
Keyword(s):  
Quantum Jump ◽  
Microscopic Models

scholarly journals News on strangeness at ultrarelativistic energies—review of microscopic models

2003 ◽  
Vol 30 (1) ◽  
pp. S139-S150 ◽  
Author(s):  
Sven Soff
Keyword(s):  
Microscopic Models
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