Thermodynamic equilibrium conditions for mass varying particle structures

• Type: Article in International Scientific Journal
• Date: 2010

Authors

bernardini, ae (Author) Other; bertolami, o (Author) FCUP

Journal

Title: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Vol. 684

Pages: 96-100

ISSN: 0370-2693

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 11 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-003-95P

DOI: 10.1016/j.physletb.2010.01.007

Abstract (EN): The thermodynamic equilibrium conditions for compact structures composed by mass varying particles are discussed assuming that the so-called dynamical mass behaves like an additional extensive thermodynamic degree of freedom. It then follows that, such weakly interacting massive particles can form clusters of non-baryonic matter or even astrophysical objects that, at cosmological scales, are held together by gravity and by the attractive force mediated by a background scalar field. The equilibrium conditions for resultant static, spherically symmetric objects of uniform energy density are derived for the case where the particles share essential features with the mass varying mechanism in the context of cosmological scenarios. Physical Solutions which result in stable astrophysical lumps are obtained and discussed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5