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We discuss the physics of the pot-in-pot cooler. By balancing temperature decrease due to evaporation and temperature increase due to heat exchange, we find the equilibrium temperature of the pot. In this simplified model, the cooling jug…

Soft Condensed Matter · Physics 2017-10-03 Oleh Luniachek , Ruslan Timchenko , Oleksiy Golubov

We numerically demonstrate heat rectification for linear chains of ions in trap lattices with graded trapping frequencies, in contact with thermal baths implemented by optical molasses. To calculate the local temperatures and heat currents…

Quantum Physics · Physics 2019-09-11 M. A. Simón , S. Martínez-Garaot , M. Pons , J. G. Muga

The differential cross-section for the process e+e- -> \gamma\gamma is calculated assuming the presence of excited electrons with a chiral magnetic coupling. This calculation permits constraining the excited electron coupling using the same…

High Energy Physics - Phenomenology · Physics 2007-05-23 Brigitte Vachon

A framework for estimating heating and expected temperature rise in current carrying molecular junctions is described. Our approach is based on applying the Redfield approximation to a tight binding model for the molecular bridge…

Condensed Matter · Physics 2009-11-07 Dvira Segal , Abraham Nitzan

The chemical dynamics scene is the most important application of computer simulation. We show that electrons jump between potential holes of different depths (new molecular orbits, hybrid atomic orbits with different energies) under the…

Quantum Physics · Physics 2023-10-17 Chen Ran , Yuri Ozhigov

We consider a system of multiple insulating rigid bodies moving inside of an electrically conducting compressible fluid. In this system we take into account the interaction of the fluid with the bodies as well as with the electromagnetic…

Analysis of PDEs · Mathematics 2022-08-15 Jan Scherz

Coupling between heat and electrical currents is at the heart of thermoelectric processes. From a thermal viewpoint this may be seen as an additional thermal flux linked to the appearance of electrical current in a given thermoelectric…

Materials Science · Physics 2012-12-03 Y. Apertet , H. Ouerdane , C. Goupil , Ph. Lecoeur

Recent experiments claimed that the enhancement of catalytic reaction rates occurs via the reduction of activation barriers driven by non-equilibrium (``hot'') electrons in plasmonic metal nanoparticles. These experiments place plasmonic…

Chemical Physics · Physics 2020-04-22 Yonatan Sivan , Ieng Wai Un , Yonatan Dubi

In order to understand how electron effective mass is enhanced by anharmonic local oscillation of an atom in a cage composed of other atoms, i.e., {\it rattling}, we analyze anharmonic Holstein model by using a Green's function method. Due…

Strongly Correlated Electrons · Physics 2015-05-27 Kunihiro Oshiba , Takashi Hotta

A physically motivated equation that determines the number of electrons of a molecule is proposed based on chemical common sense. It shows that all molecules are entangled in the number of electrons and results in the fundamental assumption…

Chemical Physics · Physics 2025-02-25 Jing Kong

Photons can come to thermal equilibrium at room temperature by scattering multiple times from a fluorescent dye. By confining the light and dye in a microcavity, a minimum energy is set and the photons can then show Bose-Einstein…

Quantum Physics · Physics 2018-04-04 Robert A. Nyman , Benjamin T. Walker

The possibility of an incompletness of the equations of electromagnetism is analyzed using a thought experiment that shows a non-physical behavior according to classical electromagnetism. Basically, from Maxwell equations it is shown that a…

General Physics · Physics 2010-05-03 Fernando O. Minotti

Electrical currents in low-dimensional quantum materials can drive electrons far from equilibrium, creating stark imbalance between electron and lattice temperatures. Yet, no existing methods enable simultaneous nanoscale mapping of both…

Advantages of introducing the electron structure function in electron induced processes are demonstrated. At present energies the same experiment gives more precise description of the electron than photon structure. The momentum scales…

High Energy Physics - Phenomenology · Physics 2007-05-23 W. Slominski , J. Szwed

Electric current generation and its dissipation are important physical processes. It ranges from the one follows the Ohm's law to superconductivity. Recently, it has been shown that the gradient of the chemical potential force arises from…

Strongly Correlated Electrons · Physics 2025-05-29 Hiroyasu Koizumi

Electrons in shocks are efficiently energized due to the cross-shock potential, which develops because of differential deflection of electrons and ions by the magnetic field in the shock front. The electron energization is necessarily…

Astrophysics · Physics 2008-11-26 M. Gedalin , M. A. Balikhin , D. Eichler

Electrons in graphene exhibit hydrodynamic behavior in a certain range of temperatures. We indicate that electric current in this regime can result in cooling of electron fluid due to the Joule-Thomson effect. Cooling occurs in the Fermi…

Mesoscale and Nanoscale Physics · Physics 2020-02-19 K. Zarembo

The physics of walking is explored, using a toy as a concrete example and a 'toy' model applied to it. Besides the Newton's second law, the problem is also discussed from the thermodynamical perspective. Once the steady state (constant…

Physics Education · Physics 2014-03-11 Julio Güémez , Manuel Fiolhais

This paper discusses a quantum optical heating mechanism which might play an important role in sonoluminescence experiments. We suggest that this mechanism occurs during the final stages of the bubble collapse phase and accompanies the…

Quantum Physics · Physics 2012-07-31 Almut Beige , Antonio Capolupo , Andreas Kurcz

Structure in the Universe grew through gravitational instability from very smooth initial conditions. Energy conservation requires that the growing negative potential energy of these structures is balanced by an increase in kinetic energy.…

Cosmology and Nongalactic Astrophysics · Physics 2010-02-17 Adam Moss , Douglas Scott