𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Vacuum polarization and scalar field effects in the early Universe

✍ Scribed by S. Gottlöber; V. Müller

Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
240 KB
Volume
307
Category
Article
ISSN
0004-6337

No coin nor oath required. For personal study only.

✦ Synopsis

Homogeneous isotropic cosmological models driven a t early timcs by a colicrent scalar [ield and the vacuuni polarization arc consitlrretl. Roth effects can lead t o the existence of a finite minimal value of the scale factor and an inflationary stage of expansion. The early as well as the late time behaviour of the cosmological evolution depends critically on the ratio of the contribution from thc vacuum polarization and the scalar field.

Es werden lioinogene isotrope kosmologischc Modelle betrachtet, tlic in tler t;riihphase von eineni koliareutcn Skalxfeltl iintl tlcr Vnkiiiinpolarisation bceinfluRt werden. Beide Effekte k6nnen zur Existenz einos entllichen Minimalwertes des Skalenhktors ond zn eincin inflationairen Expansionsstadium fiihren. Sowoiil dasVerhalten zu fruhen als auch zu spaten Zeitcn drr kosinologischen Ti.ntwickliing h a n ~t kritisch vom Verhaltnis dcr Reitrage d r r Trakuumpolarisation n n d dcs Skalarfeldcs ab.

📜 SIMILAR VOLUMES

Optimized Expansion for the Effective Ac
Optimized Expansion for the Effective Action and Multi-particle States in the Scalar Quantum Field Theory
✍ A. Okopinska 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 768 KB

The optimized expansion for the effective action in quantum field theory is discussed to second order. As an example we use the scalar quantum field theory with \(\lambda \phi^{4}\) interaction in one-dimensional space-time, which is equivalent to quantum mechanics of the anharmonic ascillator. The