Document Zbl 1423.83026

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Math. Phys.</a> <a href="/?q=in%3A433916" title="Articles in this Issue">60, No. 5, 052506, 9 p. (2019)</a>. </div> <div class="abstract">This paper gives necessary and sufficient conditions on the Weyl tensor for generalized Robertson-Walker spacetimes to be perfect-fluid spacetimes. It also discusses the equations of state that result from them through the Einstein equations in dimension four.<div class="reviewer"> Reviewer: <a href="/authors/?q=rv%3A13854">Jorge Pullin (Baton Rouge)</a></div> <div class="clearfix"></div></div> <div class="clear"></div> <br> <div class="citations"><div class="clear"><a href="/?q=rf%3A7065557">Cited in <strong>37</strong> Documents</a></div></div> <div class="classification"> <h3>MSC:</h3> <table><tr> <td> <a class="mono" href="/classification/?q=cc%3A83C55" title="MSC2020">83C55</a> </td> <td class="space"> Macroscopic interaction of the gravitational field with matter (hydrodynamics, etc.) </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A83C20" title="MSC2020">83C20</a> </td> <td class="space"> Classes of solutions; algebraically special solutions, metrics with symmetries for problems in general relativity and gravitational theory </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A76Y05" title="MSC2020">76Y05</a> </td> <td class="space"> Quantum hydrodynamics and relativistic hydrodynamics </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A53Z05" title="MSC2020">53Z05</a> </td> <td class="space"> Applications of differential geometry to physics </td> </tr></table> </div><div class="keywords"> <h3>Keywords:</h3><a href="/?q=ut%3ARobertson-Walker+spacetimes">Robertson-Walker spacetimes</a>; <a href="/?q=ut%3Aperfect+fluids">perfect fluids</a></div>  <div class="modal fade" id="metadataModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title" id="myModalLabel">Cite</h4> </div> <div class="modal-body"> <div class="form-group"> <label for="select-output" class="control-label">Format</label> <select id="select-output" class="form-control" aria-label="Select Metadata format"></select> </div> <div class="form-group"> <label for="metadataText" class="control-label">Result</label> <textarea class="form-control" id="metadataText" rows="10" style="min-width: 100%;max-width: 100%"></textarea> </div> <div id="metadata-alert" class="alert alert-danger" role="alert" style="display: none;">  </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-primary" onclick="copyMetadata()">Copy to clipboard</button> <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> </div> </div> </div> </div> <div class="functions clearfix"> <div class="function">  <a type="button" class="btn btn-default btn-xs pdf" data-toggle="modal" data-target="#metadataModal" data-itemtype="Zbl" data-itemname="Zbl 1423.83026" data-ciurl="/ci/07065557" data-biburl="/bibtex/07065557.bib" data-amsurl="/amsrefs/07065557.bib" data-xmlurl="/xml/07065557.xml" > Cite </a> <a class="btn btn-default btn-xs pdf" data-container="body" type="button" href="/pdf/07065557.pdf" title="Zbl 1423.83026 as PDF">Review PDF</a> </div> <div class="fulltexts"> <span class="fulltext">Full Text:</span> <a class="btn btn-default btn-xs" type="button" href="https://doi.org/10.1063/1.5089040" aria-label="DOI for “Perfect-fluid, generalized Robertson-Walker space-times, and Gray's decomposition”" title="10.1063/1.5089040">DOI</a> <a class="btn btn-default btn-xs" type="button" href="https://arxiv.org/abs/1901.04070"title="Note: arXiv document may differ from published version">arXiv</a> </div> <div class="sfx" style="float: right;"> </div> </div> <div class="references"> <h3>References:</h3> <table><tr> <td>[1]</td> <td class="space">Alías, L.; Romero, A.; Sánchez, M., Uniqueness of complete spacelike hypersurfaces of constant mean curvature in generalized Robertson-Walker space-times, Gen. 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