✦ LIBER ✦

Spin and torsion in the very early universe

✍ Scribed by G.G.A. Bäuerle; Chr.J. Haneveld

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 495 KB
Volume: 121
Category: Article
ISSN: 0378-4371
DOI: 10.1016/0378-4371(83)90009-2

No coin nor oath required. For personal study only.

✦ Synopsis

In the very early universe with temperature T between 10% K and 103r K the gravitational effect of torsion is dominant if particles with spin are sufficiently polarized. The source of the torsion is the spin density and the latter is usually described by a classical theory of Weyssenhoff and Raabe. In this article the spinning particles are described quantum mechanically, i.e. with a Dirac field and the spin density is defined as the source of the torsion. The macroscopic average of the spin density is obtained by the relativistic Wigner function formalism. The expression of the spin density, as derived in this article, is different from the classical one, except when both are zero.

📜 SIMILAR VOLUMES

Quantum gravity in the very early univer

Quantum gravity in the very early universe

✍ Martin Bojowald 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 143 KB

On the problems of a very early universe

✍ M.A. Markov; V.F. Mukhanov 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 266 KB

Nitrogen in the Early Universe

✍ Jennifer A. Johnson; Falk Herwig; Timothy C. Beers; Norbert Christlieb 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 302 KB

On the possible existence of a lepton-do

On the possible existence of a lepton-dominated era in the very early universe

✍ Brahmananda Bhattacharya; Karali Ranjan Chatterjee 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 286 KB

Magnetic fields in the early Universe

✍ K. Subramanian 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 196 KB 👁 1 views

## Abstract We give a pedagogical introduction to two aspects of magnetic fields in the early Universe. We first focus on how to formulate electrodynamics in curved space time, defining appropriate magnetic and electric fields and writing Maxwell equations in terms of these fields. We then speciali

Extended thermodynamics in the early Uni

Extended thermodynamics in the early Universe

✍ B. Lukács; K. Martinás; T. Pacher 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 1002 KB

I t is a geiicrsl belief that iri some early stages of the evolutiou of the Uiiiversc unequilibriuni situations played importatit role. In order to iiicorporatc sonic deviations froin tlicrmal equilibrium into thc description of the cvolution. lierc an extension of the tliermodynamic formalism is gi