Invisible QCD as Dark Energy

Invisible QCD as Dark Energy

We account for the late time acceleration of the Universe by extending the Quantum Chromodynamics (QCD) color to a <inline-formula> <math display="inline"> <semantics> <mrow> <mi>S</mi> <mi>U</mi> <mo>(</mo> <mn>3</mn>...

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Main Authors: Andrea Addazi, Stephon Alexander, Antonino Marcianò
Format: Article
Language:English
Published: MDPI AG 2020-05-01
Series:Universe
Subjects:
dark energy
non-Abelian gauge theory
condensate
Online Access:https://www.mdpi.com/2218-1997/6/6/75
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spelling doaj-f9f28048c92c4dc1b56f59df70e221da2020-11-25T03:27:10ZengMDPI AGUniverse2218-19972020-05-016757510.3390/universe6060075Invisible QCD as Dark EnergyAndrea Addazi0Stephon Alexander1Antonino Marcianò2Center for Theoretical Physics, College of Physics Science and Technology, Sichuan University, Chengdu 610065, ChinaDepartment of Physics, Brown University, Providence, RI 02912, USACenter for Field Theory and Particle Physics & Department of Physics, Fudan University, Shanghai 200433, ChinaWe account for the late time acceleration of the Universe by extending the Quantum Chromodynamics (QCD) color to a <inline-formula> <math display="inline"> <semantics> <mrow> <mi>S</mi> <mi>U</mi> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </semantics> </math> </inline-formula> invisible sector (IQCD). If the Invisible Chiral symmetry is broken in the early universe, a condensate of dark pions (dpions) and dark gluons (dgluons) forms. The condensate naturally forms due to strong dynamics similar to the Nambu–Jona-Lasinio mechanism. As the Universe evolves from early times to present times the interaction energy between the dgluon and dpion condensate dominates with a negative pressure equation of state and causes late time acceleration. We conclude with a stability analysis of the coupled perturbations of the dark pions and dark gluons.https://www.mdpi.com/2218-1997/6/6/75dark energynon-Abelian gauge theorycondensate
collection DOAJ
language English
format Article
sources DOAJ
author Andrea Addazi
Stephon Alexander
Antonino Marcianò
spellingShingle Andrea Addazi
Stephon Alexander
Antonino Marcianò
Invisible QCD as Dark Energy
Universe
dark energy
non-Abelian gauge theory
condensate
author_facet Andrea Addazi
Stephon Alexander
Antonino Marcianò
author_sort Andrea Addazi
title Invisible QCD as Dark Energy
title_short Invisible QCD as Dark Energy
title_full Invisible QCD as Dark Energy
title_fullStr Invisible QCD as Dark Energy
title_full_unstemmed Invisible QCD as Dark Energy
title_sort invisible qcd as dark energy
publisher MDPI AG
series Universe
issn 2218-1997
publishDate 2020-05-01
description We account for the late time acceleration of the Universe by extending the Quantum Chromodynamics (QCD) color to a <inline-formula> <math display="inline"> <semantics> <mrow> <mi>S</mi> <mi>U</mi> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </semantics> </math> </inline-formula> invisible sector (IQCD). If the Invisible Chiral symmetry is broken in the early universe, a condensate of dark pions (dpions) and dark gluons (dgluons) forms. The condensate naturally forms due to strong dynamics similar to the Nambu–Jona-Lasinio mechanism. As the Universe evolves from early times to present times the interaction energy between the dgluon and dpion condensate dominates with a negative pressure equation of state and causes late time acceleration. We conclude with a stability analysis of the coupled perturbations of the dark pions and dark gluons.
topic dark energy
non-Abelian gauge theory
condensate
url https://www.mdpi.com/2218-1997/6/6/75
work_keys_str_mv AT andreaaddazi invisibleqcdasdarkenergy
AT stephonalexander invisibleqcdasdarkenergy
AT antoninomarciano invisibleqcdasdarkenergy
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