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Related papers: Repulsion in low temperature $\beta$-ensembles

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We apply recently developed phenomenological theory of polar liquids to calculate the repulsive pressure between two hydrophilic membranes at nm-distances. We find that the repulsion does show up in the model and the solution to the problem…

Soft Condensed Matter · Physics 2009-12-14 P. O. Fedichev , L. I. Menshikov

Quantum Monte Carlo simulations of a two-component Bose mixture of trapped dipolar atoms of identical masses and dipole moments, provide numerical evidence of de-mixing at low finite temperatures. De-mixing occurs as a consequence of…

Quantum Gases · Physics 2013-05-29 Piyush Jain , Massimo Boninsegni

We derive asymptotically exact expressions for the thermopower and figure of merit of a quantum impurity connecting two noninteracting leads in the linear response regime where the chemical potential and temperature differences between the…

Mesoscale and Nanoscale Physics · Physics 2015-09-23 Edward Taylor , Dvira Segal

Component separation is the process of extracting one or more emission sources in astrophysical maps. It is therefore crucial to develop models that can accurately clean the cosmic microwave background (CMB) in current and future…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-17 J. M. Casas , L. Bonavera , J. González-Nuevo , G. Puglisi , C. Baccigalupi

We derive a quantum theory of evaporative cooling for a degenerate Fermi gas with two constituents and show that the optimum cooling trajectory is influenced significantly by the quantum statistics of the particles. The cooling efficiency…

Condensed Matter · Physics 2009-10-31 M. J. Holland , B. DeMarco , D. S. Jin

We show that thermalization of the motion of atoms at negative temperature is possible in an optical lattice, for conditions that are feasible in current experiments. We present a method for reversibly inverting the temperature of a trapped…

Statistical Mechanics · Physics 2007-05-23 A. P. Mosk

We prove two equilibrium properties of a system of interacting atoms in three or higher dimensional continuous space. (i) If the particles interact via pair potentials of a nonnegative Fourier transform, their self-organization into…

Mathematical Physics · Physics 2023-05-31 Andras Suto

This is the first of two lectures on a new powerful technique employed by Brown, Preston, and Singleton (BPS) to calculate transport quantities in a plasma. This exposition will be self-contained and intended for those who are not…

Plasma Physics · Physics 2007-06-20 Robert L. Singleton

The relaxation of the specific heat and the entropy to their equilibrium values is investigated numerically for the three-dimensional Coulomb glass at very low temperatures. The long time relaxation follows a stretched exponential function,…

Disordered Systems and Neural Networks · Physics 2016-08-15 A. Díaz-Sánchez , A. Pérez-Garrido

The plasma in low-luminosity accretion flows, such as the one around the black hole at the center of M87 or Sgr A* at our Galactic Center, is expected to be collisioness and two-temperature, with protons hotter than electrons. Here,…

High Energy Astrophysical Phenomena · Physics 2019-03-12 Michael E. Rowan , Lorenzo Sironi , Ramesh Narayan

The partition function of two-dimensional solitons in a heat bath of mesons is worked out to one-loop. For temperatures large compared to the meson mass, the free energy is dominated by the meson-soliton bound states and the zero modes, a…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Kacir , I. Zahed

The model under consideration is the two-dimensional Coulomb gas of $\pm$ charged hard disks with diameter $\sigma$. For the case of pointlike charges $(\sigma=0)$, the system is stable against collapse of positive-negative pairs of charges…

Statistical Mechanics · Physics 2007-05-23 P. Kalinay , L. Samaj

The analytic solution is obtained describing kinetic equilibrium of the $\beta$-processes in the nucleonic plasma with relativistic pairs. The nucleons $(n,p)$ are supposed to be non-relativistic and non-degenerate, while the electrons and…

High Energy Astrophysical Phenomena · Physics 2015-06-04 G. S. Bisnovatyi-Kogan

Kinetic instabilities in weakly collisional, high beta plasmas are investigated using two-dimensional hybrid expanding box simulations with Coulomb collisions modeled through the Langevin equation (corresponding to the Fokker-Planck one).…

Plasma Physics · Physics 2019-02-20 Petr Hellinger , Pavel M. Travnicek

Nonlinear ion-acoustic waves are analyzed in a non-relativistic magnetized quantum plasma with arbitrary degeneracy of electrons. Quantum statistics is taken into account by means of the equation of state for ideal fermions at arbitrary…

Plasma Physics · Physics 2017-12-15 Fernando Haas , Shahzad Mahmood

Magnetized nonneutral plasma composed of electrons or positrons couples to the local microwave environment via cyclotron radiation. The equilibrium plasma temperature depends on the microwave energy density near the cyclotron frequency.…

Experimental tests of Bell-type inequalities distinguishing between quantum mechanics and local realistic theories remain of considerable interest if performed on massive particles, for which no conclusive result has yet been obtained. Only…

Quantum Physics · Physics 2015-04-09 M. Iannuzzi , R. Messi , D. Moricciani , A. Orecchini , F. Sacchetti

Granular media are examined with the focus on polydisperse mixtures in the presence of two localized heat-baths. If the two driving energies are similar, the large particles prefer to stay in the `cold' regions of the system -- as far away…

Statistical Mechanics · Physics 2007-05-23 S. Luding , O. Strauss , S. McNamara

In a plasma of multiple ion species, thermodynamic forces such as pressure and temperature gradients can drive ion species separation via inter-species diffusion. Unlike its neutral mix counterpart, plasma thermo-diffusion is found…

Plasma Physics · Physics 2014-05-07 Grigory Kagan , Xian-Zhu Tang

We discuss some subtleties regarding the depletion of the condensate in homogeneous two and three-dimensional Bose at zero temperature. We find agreement with the results of Popov theory. Other results in the paper cond-mat/0202085 are not…

Condensed Matter · Physics 2007-05-23 U. Al Khawaja , J. O. Andersen , N. P. Proukakis , H. T. C. Stoof
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