Article Title

On modified dispersion relations and the Chandrasekhar mass limit

Type of Work

Article

Date

2009

Journal Title

International Journal of Modern Physics D

Journal ISSN

0218-2718

Journal Volume

18

Journal Issue

6

First Page

971

Last Page

982

DOI

10.1142/S021827180901487X

Abstract

Modified dispersion relations from effective field theory are shown to alter the Chandrasekhar mass limit. At exceptionally high densities, the modifications affect the pressure of a degenerate electron gas and can increase or decrease the mass limit, depending on the sign of the modifications. These changes to the mass limit are unlikely to be relevant to the astrophysics of white dwarf or neutron stars, due to the well-known dynamical instabilities that occur at lower densities. Generalizations to frameworks other than effective field theory are discussed.

Hamilton Areas of Study

Physics