hrvatski jezikClear Cookie - decide language by browser settings

Vacuum energy from noncommutative models

Mignemi, Salvatore; Samsarov, Anđelo (2018) Vacuum energy from noncommutative models. Physics letters. B, 779 . pp. 244-248. ISSN 0370-2693

[img]
Preview
PDF - Published Version - article
Available under License Creative Commons Attribution.

Download (220kB) | Preview

Abstract

The vacuum energy is computed for a scalar field in a noncommutative background in several models of noncommutative geometry. One may expect that the noncommutativity introduces a natural cutoff on the ultraviolet divergences of field theory. Our calculations show however that this depends on the particular model considered: in some cases the divergences are suppressed and the vacuum energy is only logarithmically divergent, in other cases they are stronger than in the commutative theory.

Item Type: Article
Uncontrolled Keywords: vacuum energy, cosmological constant, heat kernel, noncommutative models
Subjects: NATURAL SCIENCES > Physics
Divisions: Theoretical Physics Division
Projects:
Project titleProject leaderProject codeProject type
prema kvantnoj gravitaciji: nekomutativna geometrija, teorija polja i kozmologija-tqgngftcStjepan MeljanacIP-2014-09-9582HRZZ
Ruđer Bošković Institute: Twinning for a step forward of the Theoretical Physics Division-RBI-T-WINNINGFabrizio NESTI692194EK
Depositing User: Anđelo Samsarov
Date Deposited: 05 Jul 2019 11:29
Last Modified: 05 Jul 2019 11:31
URI: http://fulir.irb.hr/id/eprint/4662
DOI: 10.1016/j.physletb.2018.02.016

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year