Dark Energy from graviton-mediated interactions in the QCD vacuum
(2013) In Journal of Cosmology and Astroparticle Physics- Abstract
- Adopting the hypothesis about the exact cancellation of vacuum condensates contributions to the ground state energy in particle physics to the leading order in graviton-mediated interactions, we argue that the observable cosmological constant can be dynamically induced by an uncompensated quantum gravity correction to them after the QCD phase transition epoch. To start with, we demonstrate a possible cancellation of the quark-gluon condensate contribution to the total vacuum energy density of the Universe at temperatures T < 100 MeV without taking into account the graviton-mediated effects. In order to incorporate the latter, we then calculate the leading-order quantum correction to the classical Einstein equations due to metric... (More)
- Adopting the hypothesis about the exact cancellation of vacuum condensates contributions to the ground state energy in particle physics to the leading order in graviton-mediated interactions, we argue that the observable cosmological constant can be dynamically induced by an uncompensated quantum gravity correction to them after the QCD phase transition epoch. To start with, we demonstrate a possible cancellation of the quark-gluon condensate contribution to the total vacuum energy density of the Universe at temperatures T < 100 MeV without taking into account the graviton-mediated effects. In order to incorporate the latter, we then calculate the leading-order quantum correction to the classical Einstein equations due to metric fluctuations induced by the non-perturbative vacuum fluctuations of the gluon and quark fields in the quasiclassical approximation. It has been demonstrated that such a correction to the vacuum energy density has a form epsilon(Lambda) similar to G Lambda(6)(QCD), where G is the gravitational constant, and Lambda(QCD) is the QCD scale parameter. We analyze capabilities of this approach based on the synthesis between quantum gravity in quasiclassical approximation and theory of non-perturbative QCD vacuum for quantitative explanation of the observed Dark Energy density. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4171536
- author
- Pasechnik, Roman LU ; Beylin, Vitaly and Vereshkov, Grigory
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- dark energy theory, quantum field theory on curved space, quantum, gravity phenomenology, particle physics - cosmology connection
- in
- Journal of Cosmology and Astroparticle Physics
- issue
- 6
- article number
- 011
- publisher
- IOP Publishing
- external identifiers
-
- wos:000321200100011
- scopus:84880673665
- ISSN
- 1475-7516
- DOI
- 10.1088/1475-7516/2013/06/011
- language
- English
- LU publication?
- yes
- id
- b3b14c6f-0920-4469-b88b-974a44ce527e (old id 4171536)
- date added to LUP
- 2016-04-01 14:30:40
- date last changed
- 2024-01-25 01:27:23
@article{b3b14c6f-0920-4469-b88b-974a44ce527e,
abstract = {{Adopting the hypothesis about the exact cancellation of vacuum condensates contributions to the ground state energy in particle physics to the leading order in graviton-mediated interactions, we argue that the observable cosmological constant can be dynamically induced by an uncompensated quantum gravity correction to them after the QCD phase transition epoch. To start with, we demonstrate a possible cancellation of the quark-gluon condensate contribution to the total vacuum energy density of the Universe at temperatures T < 100 MeV without taking into account the graviton-mediated effects. In order to incorporate the latter, we then calculate the leading-order quantum correction to the classical Einstein equations due to metric fluctuations induced by the non-perturbative vacuum fluctuations of the gluon and quark fields in the quasiclassical approximation. It has been demonstrated that such a correction to the vacuum energy density has a form epsilon(Lambda) similar to G Lambda(6)(QCD), where G is the gravitational constant, and Lambda(QCD) is the QCD scale parameter. We analyze capabilities of this approach based on the synthesis between quantum gravity in quasiclassical approximation and theory of non-perturbative QCD vacuum for quantitative explanation of the observed Dark Energy density.}},
author = {{Pasechnik, Roman and Beylin, Vitaly and Vereshkov, Grigory}},
issn = {{1475-7516}},
keywords = {{dark energy theory; quantum field theory on curved space; quantum; gravity phenomenology; particle physics - cosmology connection}},
language = {{eng}},
number = {{6}},
publisher = {{IOP Publishing}},
series = {{Journal of Cosmology and Astroparticle Physics}},
title = {{Dark Energy from graviton-mediated interactions in the QCD vacuum}},
url = {{http://dx.doi.org/10.1088/1475-7516/2013/06/011}},
doi = {{10.1088/1475-7516/2013/06/011}},
year = {{2013}},
}