Thermodynamic equilibrium conditions for mass varying particle structures

Autor(es)

Bernardini, A. E. ^[1] ; Bertolami, O. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil

^[2] Inst Super Tecn, Dept Fis, P-1049001 Lisbon - Portugal

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 684, n. 2-3, p. 96-100, FEB 8 2010.
• Citações Web of Science: 11

Resumo

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. (C) 2010 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 08/50671-0 - Aplicações em mecânica quântica relativística e teoria de campos: oscilações quânticas, campos fermiônicos, quiralidade e equação de Dirac; sistemas com violação de Lorentz, energia escura e neutrinos cosmológicos; dinâmica relativística no efeito de tunelamento; zitterbewegung-like em sistemas fermiônicos em física da matéria condensada
• Beneficiário: Alex Eduardo de Bernardini
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores