I propose a causality argument in order to solve the homogeneity (horizon) problem and the entropy problem of cosmology. The solution is based on the replacement of the spacelike Big Bang boundary with a null boundary behind which stays a chronology violating region. This solution requires a tilting of the light cones near the null boundary and thus it is based more on the behavior of the light cones and hence on causality than on the behavior of the scale factor (expansion). The connection of this picture with Augustine of Hippo famous philosophical discussion on time and creation is mentioned.

Causality and entropic arguments pointing to a null Big Bang hypersurface / E. Minguzzi. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 314:(2011), pp. 012098-1-012098-4. (Intervento presentato al convegno Spanish Relativity Meeting (ERE 2010) tenutosi a Granada nel 6-10 settembre 2010) [10.1088/1742-6596/314/1/012098].

Causality and entropic arguments pointing to a null Big Bang hypersurface

MINGUZZI, ETTORE
2011

Abstract

I propose a causality argument in order to solve the homogeneity (horizon) problem and the entropy problem of cosmology. The solution is based on the replacement of the spacelike Big Bang boundary with a null boundary behind which stays a chronology violating region. This solution requires a tilting of the light cones near the null boundary and thus it is based more on the behavior of the light cones and hence on causality than on the behavior of the scale factor (expansion). The connection of this picture with Augustine of Hippo famous philosophical discussion on time and creation is mentioned.
2011
Gravity as a Crossroad in Physics
Spanish Relativity Meeting (ERE 2010)
Granada
6-10 settembre 2010
E. Minguzzi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/606142
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