English
Related papers

Related papers: Four results on phi^4 oscillons in D+1 dimensions

200 papers

We follow recent work and study the relativistic d-brane system in (d+1,1) dimensions and its connection with a Galileo invariant system in (d,1) dimensions. In particular, we solve d-brane systems in (2,1), (3,1) and (4,1) dimensions and…

High Energy Physics - Theory · Physics 2009-10-31 D. Bazeia

A new proof of Friedrich's theorem on the existence and stability of asymptotically de Sitter spaces in 3+1 dimensions is given, which extends to all even dimensions. In addition, we characterize the possible limits of spaces which are…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Michael T. Anderson

In this article, we formulate the study of the unitary time evolution of systems consisting of an infinite number of uncoupled time-dependent harmonic oscillators in mathematically rigorous terms. We base this analysis on the theory of a…

Mathematical Physics · Physics 2009-10-06 Daniel Gómez Vergel , Eduardo J. S. Villaseñor

In this work we find explicit periodic wave solutions for the classical $\phi^4$-model, and study their corresponding orbital stability/instability in the energy space. In particular, for this model we find at least four different branches…

Analysis of PDEs · Mathematics 2020-05-22 José Manuel Palacios

In this thesis the cosmological constant is investigated from two points of view. First, we study the influence of a time-dependent cosmological constant on the late-time expansion of the universe. Thereby, we consider several combinations…

High Energy Physics - Theory · Physics 2007-05-23 Florian Bauer

We study (3+1)+D dimensional spacetime, where D extra dimensions are timelike. Compactification of the D timelike dimensions leads to tachyonic Kaluza-Klein gravitons. We calculate the gravitational self-energies of massive spherical bodies…

High Energy Physics - Theory · Physics 2009-10-31 Satoshi Matsuda , Shigenori Seki

Inorganic scintillating crystals can be modelled as continua with microstructure. For rigid and isothermal crystals the evolution of charge carriers becomes in this way described by a reaction-diffusion-drift equation coupled with the…

Analysis of PDEs · Mathematics 2021-12-01 Fabrizio Davì

We study q-stars with global and local U(1) symmetry in extra dimensions in asymptotically anti de Sitter or flat spacetime. The behavior of the mass, radius and particle number of the star is quite different in 3 dimensions, but in 5, 6, 8…

High Energy Physics - Theory · Physics 2009-11-10 Athanasios Prikas

The Schr\"odinger equation for the four-dimensional double singular oscillator is separable in Eulerian, doble polar and spheroidal coordinates in ${\rm I R}^4$. It is shown that the coefficients for the expansion of double polar basis in…

Quantum Physics · Physics 2008-11-26 Mara Petrosyan

Scalar field theories with quartic interactions are of central interest in the study of second-order phase transitions. For three-dimensional theories, numerous studies make use of the fixed-dimensional perturbative computation of [B.…

High Energy Physics - Theory · Physics 2024-05-14 Giacomo Sberveglieri , Gabriele Spada

We write an action, in four dimensional N=1 curved superspace, which contains a pure R^4 term with a coupling constant. Starting from the off-shell solution of the Bianchi identities, we compute the on-shell torsions and curvatures with…

High Energy Physics - Theory · Physics 2010-02-03 Filipe Moura

We reduce M-theory on a G_2 orbifold with co-dimension four singularities, taking explicitly into account the additional gauge fields at the singularities. As a starting point, we use 11-dimensional supergravity coupled to seven-dimensional…

High Energy Physics - Theory · Physics 2008-11-26 Lara B Anderson , Adam B Barrett , Andre Lukas , Masahiro Yamaguchi

We show the obstacle version of the Strauss conjecture holds when the spatial dimension is equal to 4. We also show that an almost global existence theorem of H\"ormander for (4+1)-dimensional Minkowski space holds in the obstacle setting.…

Analysis of PDEs · Mathematics 2013-01-29 Yi Du , Jason Metcalfe , Christopher D. Sogge , Yi Zhou

We extend earlier work on fully symmetric polynomials for three-boson wave functions to arbitrarily many bosons and apply these to a light-front analysis of the low-mass eigenstates of $\phi^4$ theory in 1+1 dimensions. The basis-function…

High Energy Physics - Phenomenology · Physics 2016-05-25 S. S. Chabysheva

The spatial dimensions 1 and 4 play an exceptional role for radial solutions of the pressureless repulsive Euler-Poisson equations. Namely, for any spatial dimension except 1 and 4, any nontrivial solution of the Cauchy problem blows up in…

Analysis of PDEs · Mathematics 2024-09-02 Olga S. Rozanova

The concept of only One-dimensional time is wrong, time is Four-dimensional. The light refraction emerges directly that time is four-dimensional to us perfectly. It translates some thing incomprehensible into easily comprehensible in…

General Physics · Physics 2007-05-23 ShuRun Zhang

In odd space-time dimensions, the retarded solution of the massless wave equation has support not only on the light cone, but also inside it. At the same time, a free massless field should propagate at the speed of light. The apparent…

High Energy Physics - Theory · Physics 2020-04-29 D. V. Gal'tsov , M. Khlopunov

Using a renormalization-inspired perturbation expansion we show that oscillons in a generic field theory in (1+1) dimensions arise as dressed $Q$-balls of a universal (up to the leading nonlinear order) complex field theory. This theory…

High Energy Physics - Theory · Physics 2025-02-28 F. Blaschke , T. Romańczukiewicz , K. Sławińska , A. Wereszczyński

We classify all of the 4-dimensional linear Poisson structures of which the corresponding Lie algebras can be considered as the extension by a derivation of 3-dimensional unimodular Lie algebras. The affine Poisson structures on R^3 are…

Differential Geometry · Mathematics 2015-05-13 Yunhe Sheng

We announce numerous new results in the theory of orthogonal polynomials on the unit circle.

Spectral Theory · Mathematics 2007-05-23 Barry Simon
‹ Prev 1 8 9 10 Next ›