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Related papers: Interacting vacuum at infinity

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We investigate geometrical properties of 5D cylindrical vacuum solutions with a transverse spherical symmetry. The metric is uniform along the fifth direction and characterized by tension and mass densities. The solutions are classified by…

General Relativity and Quantum Cosmology · Physics 2011-08-31 Inyong Cho , Gungwon Kang , Sang Pyo Kim , Chul H. Lee

Assuming that initial velocity has finite energy and initial vorticity is bounded in the plane, we show that for any finite time interval the unique solutions of the Navier-Stokes equations converge uniformly to the unique solution of the…

Analysis of PDEs · Mathematics 2009-03-27 Elaine Cozzi

New theorems about the existence of solution for a system of infinite linear equations with a Vandermonde type matrix of coefficients are proved. Some examples and applications of these results are shown. In particular, a kind of these…

General Relativity and Quantum Cosmology · Physics 2015-06-17 J. L. Hernandez-Pastora

We investigate the long-time behaviour of solutions of a class of singular-degenerate porous medium type equations in bounded domains with homogeneous Dirichlet boundary conditions. The existence of global attractors is shown under very…

Analysis of PDEs · Mathematics 2026-01-15 Zehra Şen , Stefanie Sonner

Positive energy ray representations of the Poincar\'e group are naturally subdivided into three classes according to their mass and spin content: m>0, m=0 finite helicity and m=0 infinite helicity. For a long time the localization…

General Physics · Physics 2017-01-12 Bert Schroer

We study cosmological dynamics of an extended gravitational theory that gravity is coupled non-minimally with derivatives of a dark energy component and there is also a phenomenological interaction between the dark energy and dark matter.…

General Relativity and Quantum Cosmology · Physics 2016-05-20 Kourosh Nozari , Noushin Behrouz

We study quasi-one-dimensional scattering of one and two particles with short-range interactions on a discrete lattice model in two dimensions. One of the directions is tightly confined by an arbitrary trapping potential. We obtain the…

Quantum Physics · Physics 2015-05-28 Manuel Valiente , Klaus Molmer

In the present paper, an essential generalization of the symbolic dynamics is considered. We apply the notions of abstract self-similar sets and the similarity map for a chaos introduction, which orbits are expanded among infinitely many…

Dynamical Systems · Mathematics 2020-04-30 Marat Akhmet

We derive solutions to the Schwinger-Dyson equations on the Closed-Time-Path for a scalar field in the limit where backreaction is neglected. In Wigner space, the two-point Wightman functions have the curious property that the equilibrium…

High Energy Physics - Phenomenology · Physics 2015-05-30 Bjorn Garbrecht , Mathias Garny

On contact manifolds we describe a notion of (contact) finite-type for linear partial differential operators satisfying a natural condition on their leading terms. A large class of linear differential operators are of finite-type in this…

Differential Geometry · Mathematics 2010-03-11 Michael Eastwood , A. Rod Gover

Part I of this paper introduced the infinite dimensional Lagrange-Dirac theory for physical systems on the space of differential forms over a smooth manifold with boundary. This approach is particularly well-suited for systems involving…

Symplectic Geometry · Mathematics 2025-11-11 François Gay-Balmaz , Álvaro Rodríguez Abella , Hiroaki Yoshimura

This paper investigates the well-posedness of contact discontinuity solutions and the vanishing pressure limit for the Aw-Rascle traffic flow model with general pressure functions. The well-posedness problem is formulated as a free boundary…

Analysis of PDEs · Mathematics 2025-06-10 Zijie Deng , Wenjian Peng , Tian-Yi Wang , Haoran Zhang

In the framework of the quasigroup approach to conservation laws in general relativity, we show how the infinite-parametric Newman-Unti group of asymptotic symmetries can be reduced to the Poincare quasigroup. We compute Noether's charges…

General Relativity and Quantum Cosmology · Physics 2025-10-28 Alfonso Zack Robles , Alexander I. Nesterov , Claudia Moreno

We present a quantum model of the vacuum Bianchi-IX dynamics. It is based on four main elements. First, we use a compound quantization procedure: an affine coherent state quantization for isotropic variables and a Weyl quantization for…

General Relativity and Quantum Cosmology · Physics 2015-12-16 Hervé Bergeron , Ewa Czuchry , Jean-Pierre Gazeau , Przemysław Małkiewicz , Włodzimierz Piechocki

We establish the asymptotic behavior and decay of solutions near vacuum to the Hartree equation with the Coulomb interaction potential in three dimensions. Our approach is direct, which consists of independently deriving the sharp…

Analysis of PDEs · Mathematics 2024-08-29 Toan T. Nguyen , Chanjin You

We study pure exploration problems in which the set of correct answers is possibly infinite. For example, such problems arise when regressing a continuous function on the means of the bandit or when learning Nash equilibria by querying…

Machine Learning · Computer Science 2026-03-11 Riccardo Poiani , Martino Bernasconi , Andrea Celli

In this paper a possibility to accelerated the expansion of the large scale universe due to interacting varying Chaplygin gas of a specific form and a tachyonic matter is considered. A specific form of the potential and appropriate values…

General Physics · Physics 2017-08-16 Martiros Khurshudyan

The question how to Lorentz transform an N-particle wave function naturally leads to the concept of a so-called multi-time wave function, i.e. a map from (space-time)^N to a spin space. This concept was originally proposed by Dirac as the…

Mathematical Physics · Physics 2015-04-10 Matthias Lienert

We examine a new multiverse scenario in which the component universes interact. We focus our attention to the process of "true" vacuum nucleation in the false vacuum within one single element of the multiverse. It is shown that the…

General Relativity and Quantum Cosmology · Physics 2016-06-29 S. Robles-Pérez , A. Alonso-Serrano , C. Bastos , O. Bertolami

We construct a piecewise model that gives a physical viable realization of finite-time future singularity for a spatially flat Friedmann-Robertson-Walker universe within the interacting dark matter--dark energy framework, with the latter…

General Relativity and Quantum Cosmology · Physics 2017-03-14 Mauricio Cataldo , Luis P. Chimento , Martín G. Richarte
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