Home
For authors
Submission status

Current
Archive (English)
Archive
   Volumes 61-80
   Volumes 41-60
   Volumes 21-40
   Volumes 1-20
   Volumes 81-92
      Volume 92
      Volume 91
      Volume 90
      Volume 89
      Volume 88
      Volume 87
      Volume 86
      Volume 85
      Volume 84
      Volume 83
      Volume 82
      Volume 81
Search
VOLUME 90 | ISSUE 11 | PAGE 793
\boldsymbol{\hbar} as parameter of Minkowski metric in effective theory
G. E. Volovik
Low Temperature Laboratory, Helsinki University of Technology, FIN-02015 HUT, Finland
Landau Institute for Theoretical Physics RAS, 119334 Moscow, Russia


PACS: 03.65.-w, 04.20.-q, 05.20.Jr
Abstract
With the proper choice of the dimensionality of the metric components and matter field variables, the action for all fields becomes dimensionless. Such quantities as the vacuum speed of light c, the Planck constant \hbar, the electric charge e, the particle mass m, the Newton constant G never enter equations written in the covariant form, i.e., via the metric gμν. The speed of light c and the Planck constant \hbar are parameters of a particular two-parametric family of solutions of general relativity equations describing the flat isotropic Minkowski vacuum in effective theory emerging at low energy: g^{\mu\nu}_\mathrm{Minkowski}=\mathrm{diag}(-\hbar^2,
(\hbar c)^2, (\hbar c)^2, (\hbar c)^2). They parametrize the equilibrium quantum vacuum state. The physical quantities which enter the covariant equations are dimensionless quantities and quantities which have dimension of rest energy M or its power. Dimensionless quantities include the running coupling `constants' αi; the geometric θ-parameters which enter topological terms in action; and geometric charges coming from the group theory, such as angular momentum quantum number j, weak charge, electric charge q, hypercharge, baryonic and leptonic charges, number of atoms N, etc. Dimensionful parameters are mass matrices with dimension of M; gravitational coupling K with [K]=[M]2; cosmological constant with dimension M4; etc. In effective theory, the interval s has the dimension of 1/M; it characterizes dynamics of particles in quantum vacuum rather than space-time geometry. The action is dimensionless reflecting equivalence between action and the phase of a wave function in quantum mechanics. We discuss the effective action, and the measured physical quantities including parameters of metrology triangle.


Download PS file (GZipped, 85.5K)  |  Download PDF file (230.1K)


Список работ, цитирующих данную статью, см. здесь.

List of articles citing this article can be found here.