Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100974642> ?p ?o ?g. }
- W3100974642 abstract "In the present work, we revisit the process of gravitational collapse of a spherically symmetric homogeneous dust fluid which is described by the Oppenheimer–Snyder (OS) model (Oppenheimer and Snyder in Phys Rev D 56:455, 1939). We show that such a scenario would not end in a spacetime singularity when the spin degrees of freedom of fermionic particles within the collapsing cloud are taken into account. To this purpose, we take the matter content of the stellar object as a homogeneous Weyssenhoff fluid. Employing the homogeneous and isotropic FLRW metric for the interior spacetime setup, it is shown that the spin of matter, in the context of a negative pressure, acts against the pull of gravity and decelerates the dynamical evolution of the collapse in its later stages. Our results show a picture of gravitational collapse in which the collapse process halts at a finite radius, whose value depends on the initial configuration. We thus show that the spacetime singularity that occurs in the OS model is replaced by a non-singular bounce beyond which the collapsing cloud re-expands to infinity. Depending on the model parameters, one can find a minimum value for the boundary of the collapsing cloud or correspondingly a threshold value for the mass content below which the horizon formation can be avoided. Our results are supported by a thorough numerical analysis." @default.
- W3100974642 created "2020-11-23" @default.
- W3100974642 creator A5041168386 @default.
- W3100974642 creator A5043676792 @default.
- W3100974642 creator A5048646658 @default.
- W3100974642 date "2015-02-01" @default.
- W3100974642 modified "2023-09-26" @default.
- W3100974642 title "Collapse and dispersal of a homogeneous spin fluid in Einstein–Cartan theory" @default.
- W3100974642 cites W1523592133 @default.
- W3100974642 cites W1611216041 @default.
- W3100974642 cites W1673838967 @default.
- W3100974642 cites W1963926866 @default.
- W3100974642 cites W1964020878 @default.
- W3100974642 cites W1967661923 @default.
- W3100974642 cites W1968449876 @default.
- W3100974642 cites W1970003137 @default.
- W3100974642 cites W1974072534 @default.
- W3100974642 cites W1975518117 @default.
- W3100974642 cites W1978410670 @default.
- W3100974642 cites W1980851479 @default.
- W3100974642 cites W1983413354 @default.
- W3100974642 cites W1984979925 @default.
- W3100974642 cites W1986422309 @default.
- W3100974642 cites W1993621848 @default.
- W3100974642 cites W1994295309 @default.
- W3100974642 cites W1996146431 @default.
- W3100974642 cites W1996228943 @default.
- W3100974642 cites W1996692003 @default.
- W3100974642 cites W2001582136 @default.
- W3100974642 cites W2006996776 @default.
- W3100974642 cites W2007567094 @default.
- W3100974642 cites W2010300032 @default.
- W3100974642 cites W2014385680 @default.
- W3100974642 cites W2017545688 @default.
- W3100974642 cites W2023341373 @default.
- W3100974642 cites W2029403139 @default.
- W3100974642 cites W2031856975 @default.
- W3100974642 cites W2034072830 @default.
- W3100974642 cites W2036707580 @default.
- W3100974642 cites W2038630462 @default.
- W3100974642 cites W2039781033 @default.
- W3100974642 cites W2043665546 @default.
- W3100974642 cites W2044474553 @default.
- W3100974642 cites W2049412986 @default.
- W3100974642 cites W2052045615 @default.
- W3100974642 cites W2057776977 @default.
- W3100974642 cites W2061134346 @default.
- W3100974642 cites W2062476953 @default.
- W3100974642 cites W2066397156 @default.
- W3100974642 cites W2068289758 @default.
- W3100974642 cites W2070832770 @default.
- W3100974642 cites W2071226875 @default.
- W3100974642 cites W2071725611 @default.
- W3100974642 cites W2075437694 @default.
- W3100974642 cites W2075536196 @default.
- W3100974642 cites W2075837322 @default.
- W3100974642 cites W2076097540 @default.
- W3100974642 cites W2078821092 @default.
- W3100974642 cites W2079125255 @default.
- W3100974642 cites W2083719113 @default.
- W3100974642 cites W2086139158 @default.
- W3100974642 cites W2086343443 @default.
- W3100974642 cites W2087144159 @default.
- W3100974642 cites W2088368747 @default.
- W3100974642 cites W2090573379 @default.
- W3100974642 cites W2093929238 @default.
- W3100974642 cites W2097523349 @default.
- W3100974642 cites W2099504529 @default.
- W3100974642 cites W2100473402 @default.
- W3100974642 cites W2109251061 @default.
- W3100974642 cites W2123365287 @default.
- W3100974642 cites W2128497557 @default.
- W3100974642 cites W2128862826 @default.
- W3100974642 cites W2135232219 @default.
- W3100974642 cites W2136333660 @default.
- W3100974642 cites W2154346444 @default.
- W3100974642 cites W2157957584 @default.
- W3100974642 cites W2171361875 @default.
- W3100974642 cites W2225468140 @default.
- W3100974642 cites W2504965892 @default.
- W3100974642 cites W3022516529 @default.
- W3100974642 cites W3037141003 @default.
- W3100974642 cites W3037214302 @default.
- W3100974642 cites W3098103318 @default.
- W3100974642 cites W3100037043 @default.
- W3100974642 cites W3101726231 @default.
- W3100974642 cites W3102180824 @default.
- W3100974642 cites W3102564339 @default.
- W3100974642 cites W3103735215 @default.
- W3100974642 cites W3105919049 @default.
- W3100974642 cites W3106163340 @default.
- W3100974642 cites W3123743314 @default.
- W3100974642 cites W3124964908 @default.
- W3100974642 cites W3125652690 @default.
- W3100974642 cites W3194723597 @default.
- W3100974642 cites W4248850837 @default.
- W3100974642 cites W4299694693 @default.
- W3100974642 cites W4300942926 @default.
- W3100974642 cites W642711759 @default.
- W3100974642 doi "https://doi.org/10.1140/epjc/s10052-015-3276-1" @default.