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We perform an analysis where Einstein's field equation is derived by means of very simple thermodynamical arguments. Our derivation is based on a consideration of the properties of a very small, spacelike two-plane in a uniformly…

General Relativity and Quantum Cosmology · Physics 2010-11-11 Jarmo Makela , Ari Peltola

Total pressure gauges are used to measure the level of vacuum in a system independent of the gas species. Partial pressure analysers measure the occurrence of each gas species separately. This report explains the methodology of measurement,…

Accelerator Physics · Physics 2020-06-05 Karl Jousten

Using a multiple-image reconstruction method applied to a harmonically trapped Bose gas, we determine the equation of state of uniform matter across the critical transition point, within the local density approximation. Our experimental…

Quantum Gases · Physics 2020-10-14 C. Mordini , D. Trypogeorgos , A. Farolfi , L. Wolswijk , S. Stringari , G. Lamporesi , G. Ferrari

Experimental data were used to support a new concept of osmotic force and a new osmotic law that can explain the osmotic process without the difficulties encountered with van't Hoff osmotic pressure theory. Derived new osmotic formula with…

Other Quantitative Biology · Quantitative Biology 2023-01-03 Rongqing Xie , Gaochao Lin , Hung-Chung Huang

We present a study of the Casimir effect in an imperfect (mean-field) Bose gas contained between two infinite parallel plane walls. The derivation of the Casimir force follows from the calculation of the excess grand canonical free energy…

Statistical Mechanics · Physics 2015-06-03 Marek Napiorkowski , Jaroslaw Piasecki

We introduce an application of the Quasi-Gasdynamic method for a solution of ideal magnetohydrodynamic equations in the modeling of compressible conductive gas flows. A time-averaging procedure is applied for all physical parameters in…

Mathematical Physics · Physics 2013-05-24 M. V. Popov , T. G. Elizarova , S. D. Ustyugov

In this paper we consider an interacting Bose gas at zero temperature, constrained to a finite box and in the mean field limiting regime. The N gas particles interact through a pair potential of positive type and with an ultraviolet…

Mathematical Physics · Physics 2016-05-23 Alessandro Pizzo

After a historical introduction to Poisson's equation for Newtonian gravity, its analog for static gravitational fields in Einstein's theory is reviewed. It appears that the pressure contribution to the active mass density in Einstein's…

General Relativity and Quantum Cosmology · Physics 2009-11-11 Juergen Ehlers , Istvan Ozsvath , Engelbert Schucking

We achieve a bosonization of one-dimensional ideal gas of exclusion statistics $\lambda$ at low temperatures, resulting in a new variant of $c=1$ conformal field theory with compactified radius $R=\sqrt{1/\lambda}$. These ideal excluson…

Condensed Matter · Physics 2009-10-28 Yong-Shi Wu , Yue Yu

We propose a variational approximation to the ground state energy of a one-dimensional gas of interacting bosons on the continuum based on the Bethe Ansatz ground state wavefunction of the Lieb-Liniger model. We apply our variational…

Quantum Gases · Physics 2020-01-08 S. De Palo , R. Citro , E. Orignac

We extend the systematic calculation of an approximately relativistic Hamiltonian for centre of mass and internal dynamics of an electromagnetically bound two-particle system by Sonnleitner and Barnett [1] to the case including a weak…

Quantum Physics · Physics 2019-11-27 Philip K. Schwartz , Domenico Giulini

The Charney-Hasegawa-Mima equation is an infinite-dimensional Hamiltonian system with dynamics generated by a noncanonical Poisson bracket. Here a first principle Hamiltonian derivation of this system, beginning with the ion fluid dynamics…

Chaotic Dynamics · Physics 2009-09-04 Emanuele Tassi , Cristel Chandre , Philip J. Morrison

Anyons are 2D or 1D quantum particles with intermediate statistics, interpolating between bosons and fermions. We study the ground state of a large number N of 2D anyons, in a scaling limit where the statistics parameter is proportional to…

Mathematical Physics · Physics 2015-09-18 Douglas Lundholm , Nicolas Rougerie

An effective field approximation, similar to the atomic Thomas-Fermi approach, is proposed for studying non-Abelian gauge theories which includes finite-volume effects. As applications of the formalism the equation of state for an SU(2)…

High Energy Physics - Phenomenology · Physics 2014-11-17 D. D. Dixon , P. Kaus , J. Wudka

We propose a new approach to deriving quantitative mean field approximations for any probability measure $P$ on $\mathbb{R}^n$ with density proportional to $e^{f(x)}$, for $f$ strongly concave. We bound the mean field approximation for the…

Probability · Mathematics 2022-06-06 Daniel Lacker , Sumit Mukherjee , Lane Chun Yeung

Small-x divergences of Abelian gauge theory in the front form of Hamiltonian dynamics are regulated using a mass parameter for gauge bosons, introduced through a mechanism analogous to the spontaneous breaking of global gauge symmetry. A…

High Energy Physics - Theory · Physics 2020-01-24 Stanislaw D. Glazek

We consider the dynamics of a heavy quantum tracer particle coupled to a non-relativistic boson field in ${\mathbb R}^3$. The pair interactions of the bosons are of mean-field type, with coupling strength proportional to $\frac1N$ where $N$…

Mathematical Physics · Physics 2019-01-28 Thomas Chen , Avy Soffer

In this contribution I briefly summarize several topics related to the measurement of the W-boson mass, M_W, at hadron colliders.

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Keller

In this paper it is shown that Tolman's law can be derived from relativistic kinetic theory applied to a simple fluid in a BGK-like approximation. Using this framework, it becomes clear that the contribution of the gravitational field can…

General Relativity and Quantum Cosmology · Physics 2012-10-08 A. Sandoval-Villalbazo , A. L. Garcia-Perciante , D. Brun-Battistini

The basic concepts and hypotheses of Newtonian Cosmology necessary for a consistent treatment of the averaged cosmological dynamics are formulated and discussed in details. The space-time, space, time and ensemble averages for the…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Roustam Zalaletdinov , Alan Coley
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