Wave equation of the scalar field and superfluids
| Autor: | Naddeo, A., Scelza, G. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Mod.Phys.Lett.A Vol. 24, No. 40 : pp. 3249-3256 (2009) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1142/S0217732309032162 |
| Popis: | The new formal analogy between superfluid systems and cosmology, which emerges by taking into account the back-reaction of the vacuum to the quanta of sound waves \cite{noi}, enables us to put forward some common features between these two different areas of physics. We find the condition that allows us to justify a General Relativity (GR) derivation of the hydrodynamical equation for the superfluid in a four-dimensional space whose metric is the Unruh one \cite{Unruh}. Furthermore we show how, in the particular case taken into account, our hydrodynamical equation can be deduced within a four-dimensional space from the wave equation of a massless scalar field. Comment: Accepted for publication in Modern Physics Letters A |
| Databáze: | arXiv |
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