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- W2004175031 abstract "We study how generic phase transitions taking place in compact stars constructed in the framework of the Eddington-inspired Born-Infeld (EiBI) gravity can lead to anomalous behavior of these stars. For the case with first-order phase transitions, compact stars in EiBI gravity with a positive coupling parameter $ensuremath{kappa}$ exhibit a finite region with constant pressure, which is absent in general relativity. However, for the case with a negative $ensuremath{kappa}$, an equilibrium stellar configuration cannot be constructed. Hence EiBI gravity seems to impose stricter constraints on the microphysics of stellar matter. Besides, in the presence of spatial discontinuities in the sound speed ${c}_{s}$ due to phase transitions, the Ricci scalar is spatially discontinuous and contains $ensuremath{delta}$-function singularities proportional to the jump in ${c}_{s}^{2}$ acquired in the associated phase transition." @default.
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- W2004175031 date "2013-03-19" @default.
- W2004175031 modified "2023-10-15" @default.
- W2004175031 title "Compact stars in Eddington-inspired Born-Infeld gravity: Anomalies associated with phase transitions" @default.
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- W2004175031 doi "https://doi.org/10.1103/physrevd.87.061503" @default.
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