The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity
Though not a part of mainstream physics, Salam’s theory of strong gravity remains a viable effective model for the description of strong interactions in the gauge singlet sector of QCD, capable of producing particle confinement and asymptotic freedom, but not of reproducing interactions involving SU...
Saved in:
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/106343 http://hdl.handle.net/10220/49603 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-106343 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1063432023-02-28T19:50:06Z The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity Burikham, Piyabut Harko, Tiberiu Lake, Matthew James School of Physical and Mathematical Sciences Strong Gravity Science::Physics Mass Bounds Though not a part of mainstream physics, Salam’s theory of strong gravity remains a viable effective model for the description of strong interactions in the gauge singlet sector of QCD, capable of producing particle confinement and asymptotic freedom, but not of reproducing interactions involving SU(3) color charge. It may therefore be used to explore the stability and confinement of gauge singlet hadrons, though not to describe scattering processes that require color interactions. It is a two-tensor theory of both strong interactions and gravity, in which the strong tensor field is governed by equations formally identical to the Einstein equations, apart from the coupling parameter, which is of order 1 GeV−1 . We revisit the strong gravity theory and investigate the strong gravity field equations in the presence of a mixing term which induces an effective strong cosmological constant, Λf . This introduces a strong de Sitter radius for strongly interacting fermions, producing a confining bubble, which allows us to identify Λf with the ‘bag constant’ of the MIT bag model, B≃2×1014 g cm−3 . Assuming a static, spherically symmetric geometry, we derive the strong gravity TOV equation, which describes the equilibrium properties of compact hadronic objects. From this, we determine the generalized Buchdahl inequalities for a strong gravity ‘particle’, giving rise to upper and lower bounds on the mass/radius ratio of stable, compact, strongly interacting objects. We show, explicitly, that the existence of the lower mass bound is induced by the presence of Λf , producing a mass gap, and that the upper bound corresponds to a deconfinement phase transition. The physical implications of our results for holographic duality in the context of the AdS/QCD and dS/QCD correspondences are also discussed. Published version 2019-08-13T04:39:28Z 2019-12-06T22:09:28Z 2019-08-13T04:39:28Z 2019-12-06T22:09:28Z 2017 Journal Article Burikham, P., Harko, T., & Lake, M. J. (2017). The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity. European Physical Journal C, 77(11), 803-. doi:10.1140/epjc/s10052-017-5381-9 1434-6044 https://hdl.handle.net/10356/106343 http://hdl.handle.net/10220/49603 10.1140/epjc/s10052-017-5381-9 en European Physical Journal C © 2017 The Author(s). Published by Springer Berlin Heidelberg. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 24 p. application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
Strong Gravity Science::Physics Mass Bounds |
spellingShingle |
Strong Gravity Science::Physics Mass Bounds Burikham, Piyabut Harko, Tiberiu Lake, Matthew James The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity |
description |
Though not a part of mainstream physics, Salam’s theory of strong gravity remains a viable effective model for the description of strong interactions in the gauge singlet sector of QCD, capable of producing particle confinement and asymptotic freedom, but not of reproducing interactions involving SU(3) color charge. It may therefore be used to explore the stability and confinement of gauge singlet hadrons, though not to describe scattering processes that require color interactions. It is a two-tensor theory of both strong interactions and gravity, in which the strong tensor field is governed by equations formally identical to the Einstein equations, apart from the coupling parameter, which is of order 1 GeV−1 . We revisit the strong gravity theory and investigate the strong gravity field equations in the presence of a mixing term which induces an effective strong cosmological constant, Λf . This introduces a strong de Sitter radius for strongly interacting fermions, producing a confining bubble, which allows us to identify Λf with the ‘bag constant’ of the MIT bag model, B≃2×1014 g cm−3 . Assuming a static, spherically symmetric geometry, we derive the strong gravity TOV equation, which describes the equilibrium properties of compact hadronic objects. From this, we determine the generalized Buchdahl inequalities for a strong gravity ‘particle’, giving rise to upper and lower bounds on the mass/radius ratio of stable, compact, strongly interacting objects. We show, explicitly, that the existence of the lower mass bound is induced by the presence of Λf , producing a mass gap, and that the upper bound corresponds to a deconfinement phase transition. The physical implications of our results for holographic duality in the context of the AdS/QCD and dS/QCD correspondences are also discussed. |
author2 |
School of Physical and Mathematical Sciences |
author_facet |
School of Physical and Mathematical Sciences Burikham, Piyabut Harko, Tiberiu Lake, Matthew James |
format |
Article |
author |
Burikham, Piyabut Harko, Tiberiu Lake, Matthew James |
author_sort |
Burikham, Piyabut |
title |
The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity |
title_short |
The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity |
title_full |
The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity |
title_fullStr |
The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity |
title_full_unstemmed |
The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity |
title_sort |
qcd mass gap and quark deconfinement scales as mass bounds in strong gravity |
publishDate |
2019 |
url |
https://hdl.handle.net/10356/106343 http://hdl.handle.net/10220/49603 |
_version_ |
1759856416744538112 |