Special Issue "Exact Solutions in Classical Field Theory: Solitons, Black Holes and Boson Stars"

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics and Symmetry".

Deadline for manuscript submissions: closed (20 November 2020).

Special Issue Editors

Prof. Dr. Nicolas Boulanger
Website
Guest Editor
Unit "Physics of the Universe, Fields and Gravitation", Science Faculty, Mons University - UMONS, 20 Place du Parc, B-7000 Mons, Belgium
Interests: higher spin gauge theories; supergravity and duality; fractional spin fields and anyons; BRST-BV formalism; Weyl invariance in gravity; Poisson sigma models; AKSZ quantization; AdS/CFT
Special Issues and Collections in MDPI journals
Dr. Andrea Campoleoni
Website
Guest Editor
University of Mons, Mons, Belgium
Interests: higher spin gauge theories; gravitational theories in three space-time dimensions; AdS/CFT

Special Issue Information

Dear Colleagues,

Compact objects is the name given to solutions in General Relativity (or alternative models of gravity) that are typically so dense that the curvature of space–time around them has detectable effects. An extreme case exists, which is realized and observed in Nature: Black Holes. There exists at least one alternative to black holes, albeit more exotic, given by compact objects made out of bosonic fields, the simplest example being the boson star made of a complex valued, massive scalar field.

The study of compact objects as dense as black holes and boson stars is interesting in its own right. It is also very important from another perspective: Since these objects create very strong gravitational fields, they also are an ideal testing ground for alternative models of gravity and/or for testing the limits of General Relativity. The latter theory works extremely well in the weak regime but has not been explored in full detail in the very strong regime. This Special Issue is dedicated to exact solutions to Einstein–Yang–Mills-type theories and their various extensions.

Prof. Dr. Nicolas Boulanger
Dr. Andrea Campoleoni
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Open AccessArticle
Relativistic Symmetries and Hamiltonian Formalism
Symmetry 2020, 12(11), 1810; https://doi.org/10.3390/sym12111810 - 01 Nov 2020
Abstract
The relativistic (Poincaré and conformal) symmetries of classical elementary systems are briefly discussed and reviewed. The main framework is provided by the Hamiltonian formalism for dynamical systems exhibiting symmetry described by a given Lie group. The construction of phase space and canonical variables [...] Read more.
The relativistic (Poincaré and conformal) symmetries of classical elementary systems are briefly discussed and reviewed. The main framework is provided by the Hamiltonian formalism for dynamical systems exhibiting symmetry described by a given Lie group. The construction of phase space and canonical variables is given using the tools from the coadjoint orbits method. It is indicated how the “exotic” Lorentz transformation properties for particle coordinates can be derived; they are shown to be the natural consequence of the formalism. Full article
Open AccessArticle
Gravitating Bubbles of Gluon Plasma above Deconfinement Temperature
Symmetry 2020, 12(10), 1668; https://doi.org/10.3390/sym12101668 - 13 Oct 2020
Abstract
The equation of state of SU(3) Yang–Mills theory can be modelled by an effective Z3symmetric potential depending on the temperature and on a complex scalar field ϕ. Allowing ϕ to be dynamical opens the way to the study of [...] Read more.
The equation of state of SU(3) Yang–Mills theory can be modelled by an effective Z3symmetric potential depending on the temperature and on a complex scalar field ϕ. Allowing ϕ to be dynamical opens the way to the study of spatially localized classical configurations of the scalar field. We first show that spherically symmetric static Q-balls exist in the range (11.21)×Tc, Tc being the deconfinement temperature. Then we argue that Q-holes solutions, if any, are unphysical within our framework. Finally, we couple our matter Lagrangian to Einstein gravity and show that spherically symmetric static boson stars exist in the same range of temperature. The Q-ball and boson-star solutions we find can be interpreted as “bubbles” of deconfined gluonic matter; their mean radius is always smaller than 10 fm. Full article
Show Figures

Figure 1

Back to TopTop