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On the structure of the S-matrix in general boundary quantum field theory in curved space
the S-matrix quantum field theory
2010/12/23
We use the general boundary formulation (GBF) of quantum field theory to compute the S-matrix for a general interacting scalar field in curved spacetime. This S-matrix is obtained as the asymptotic li...
Finite size effects on the Poynting-Robertson effect: a fully general relativistic treatment
Finite size effects the Poynting-Robertson effect
2010/12/27
Ever since the first discovery of Poynting and Robertson, the radiation source has been treated as merely a point. Even in a very few studies where the size of the source has been taken into account,...
Relativistic Hydrodynamics with General Anomalous Charges
Relativistic Hydrodynamics General Anomalous Charges
2010/12/24
We consider the hydrodynamic regime of gauge theories with general triangle anomalies, where the participating currents may be global or gauged, abelian or non-abelian. We generalize the argument of ...
The Jet in the Galactic Center: An Ideal Laboratory for Magnetohydrodynamics and General Relativity
the Galactic Center An Ideal Laboratory Magnetohydrodynamics
2011/1/11
In this paper we review and discuss some of the intriguing properties of the Galactic Center supermassive black hole candidate Sgr A*. Of all possible black hole sources, the event horizon of Sgr A*, ...
General formula for symmetry factors of Feynman diagrams
General formula symmetry factors Feynman diagrams
2010/12/24
General formula for symmetry factors of Feynman diagrams with fields having higher spin is derived. By pointing out that any fields can be treated just as scalar fields (real or complex) then symmetr...
Nonrelativistic general covariant theory of gravity with a running constant $\lambda$
Nonrelativistic general covariant theory gravity running constant
2010/12/23
In this paper, we investigate three important issues: ghost, stability and strong coupling, in the Horava-Melby-Thompson (HMT) setup of the Horava-Lifshitz (HL) theory with $\lambda \not= 1$. We firs...
General formulation of general-relativistic higher-order gauge-invariant perturbation theory
General formulation general-relativistic higher-order gauge-invariant perturbation theory
2010/12/20
Gauge-invariant treatments of general-relativistic higher-order perturbations on generic back-
ground spacetime is proposed. After reviewing the general framework of the second-order gauge-
invarian...
A general comparison theorem for $p$-harmonic maps in homotopy class
comparison theorem homotopy class
2010/11/22
We prove a general comparison result for homotopic finite $p$-energy $C^{1}$ $p$-harmonic maps $u,v:M\to N$ between Riemannian manifolds, assuming that $M$ is $p$-parabolic and $N$ is complete and non...
We consider the motion of tachyons (faster-than-light particles) in the framework of General Relativity. An important feature is the large contribution of low energy tachyons to the energy-momentum te...
We consider the motion of tachyons (faster-than-light particles)in the framework of General Relativity. An important feature is the large contribution of low energy tachyons to the energy-momentum ten...
Polarization effects in $\bar N+N\to π+\ell^++\ell^-$ reaction. General analysis and numerical estimations
$\bar N+N\to π+\ell^++\ell^-$ reaction General analysis numerical estimations
2011/1/6
A general formalism is developed to calculate the cross section and the polariza-tion observables for the reaction ¯N + N ! π + ℓ+ + ℓ−. The matrix element and the observables a...
McMullen's g-vector is important for simple convex polytopes. This paper postulates axioms for its extension to general convex polytopes. It also conjectures that, for each dimension d, a stated fini...
General Non-equilibrium Theory of Colloid Dynamics
General Non-equilibrium Theory Colloid Dynamics
2010/11/24
A non-equilibrium extension of Onsager’s canonical theory of thermal fluctuations is employed
to derive a self-consistent theory for the description of the statistical properties of the instantaneous...
A finite volume method on general meshes for a degenerate parabolic convection-reaction-diffusion equation
parabolic convection-reaction-diffusion equation math
2010/11/23
We propose a finite volume method on general meshes for the discretization of a degenerate parabolic convection-reaction-diffusion equation. Equations of this type arise in many contexts, such as the ...
General Relativistic Magnetohydrodynamic Bondi--Hoyle Accretion
General Relativistic Magnetohydrodynamic Bondi--Hoyle Accretion
2010/11/15
In this paper we present a fully relativistic study of axisymmetric magnetohydrodynamic Bondi{
Hoyle accretion onto a moving Kerr black hole. The equations of general relativistic magnetohydrodynamic...