Note on the mass–radius relations for spherical compact objects in general relativity with semi-classical corrections

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dc.contributor.authorNussupbekov, Ayan
dc.contributor.authorMalafarina, Daniele
dc.date.accessioned2020-05-06T11:20:04Z
dc.date.available2020-05-06T11:20:04Z
dc.date.issued2020-03-12
dc.description.abstractWe consider the effects that modifications to general relativity (GR) at high densities may have on the structure of spherical compact objects. Such effects can be modeled via semi-classical corrections that are manifest in an additional effective (i.e. non-physical) term in the energy momentum tensor. In particular, we consider two kinds of effective corrections that are quadratic in the density: one inspired by loop quantum gravity (LQG) and one inspired by Einstein– Cartan Theory (ECT). For both corrections, we consider two standard toy models of compact objects, one with polytropic equation of state and the other described by the MIT-bag model. We show that the LQG-inspired corrections can produce objects with greater radius and total mass, while the ECT-inspired corrections produce objects that are smaller and less massive than their counterparts in GRen_US
dc.identifier.citationNussupbekov, A., Malafarina, D. Note on the mass–radius relations for spherical compact objects in general relativity with semi-classical corrections. Eur. Phys. J. C 80, 236 (2020). https://doi.org/10.1140/epjc/s10052-020-7780-6en_US
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-020-7780-6
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/4606
dc.language.isoenen_US
dc.publisherSpringerOpenen_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectResearch Subject Categories::NATURAL SCIENCES::Physics::Elementary particle physicsen_US
dc.titleNote on the mass–radius relations for spherical compact objects in general relativity with semi-classical correctionsen_US
dc.typeArticleen_US
workflow.import.sourcescience

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