Viability of bouncing cosmology in energy-momentum-squared gravity
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DOI: 10.1103/physrevd.101.044058
Abstract: We analyze the early-time isotropic cosmology in the so-called energy-momentum-squared gravity (EMSG). In this theory, a $T_{\mu\nu}T^{\mu\nu}$ term is added to the Einstein-Hilbert action, which has been shown to replace the initial singularity by a… read more here.
Keywords: solution; squared gravity; cosmology; energy momentum ... See more keywords
Constraining energy-momentum-squared gravity by binary pulsar observations
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DOI: 10.1103/physrevd.105.044014
Abstract: In this paper, we introduce the post-Minkowskian approximation of energy-momentum-squared gravity (EMSG). This approximation is used to study the gravitational energy flux in the context of EMSG. As an application of our results, we investigate… read more here.
Keywords: momentum squared; squared gravity; energy momentum; energy ... See more keywords
Dynamics of spherical collapse in energy–momentum squared gravity
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DOI: 10.1142/s0217751x21500044
Abstract: This paper investigates the dynamics of spherical collapse in the framework of energy–momentum squared gravity. This theory overcomes the big-bang singularity and provides viable cosmological conse... read more here.
Keywords: dynamics spherical; squared gravity; energy momentum; momentum squared ... See more keywords