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Space-time metrical fluctuations induced by cosmic turbulence

Пространственно-временные метрические флуктуации, индуцированные космической турбулентностью

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Il Nuovo Cimento B (1971-1996)

Summary

For a stochastic stress-energy tensor associated with cosmic turbulence, it is observed that Einstein’s equations imply fluctuations in the space-time metric tensor. Such metrical fluctuations are shown to engender modified values for the average effective proper density and total pressure and thus to alter the solutions to the Friedman equations.

Riassunto

Per un tensore stocastico di sforzo-energia associato con la turbulenza cosmica, si osserva che le equazioni di Einstein implicano fluttuazioni nel tensore metrico dello spazio-tempo. Si mostra che tali fluttuazioni metriche provocano valori modificati per la pressione propria media efficace la pressione totale e così alterano le soluzioni delle equazioni di Friedman.

Резюме

Для стохастического тензора энергии-импульса, связанного с космической турбулентностью, показывается, что уравнения Эйнштейна подразумевают флуктуации в метрическом тензоре пространства и времени. Показывается, что такие флуктуации, видоизменяют величины для средней эффективной собственной плотности и полного давления, что приводит к изменению решений уравнений Фридмана.

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This work was supported by NASA grant NSG 7491.

Traduzione a cura della Redazione.

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Rosen, G. Space-time metrical fluctuations induced by cosmic turbulence. Nuov Cim B 57, 125–130 (1980). https://doi.org/10.1007/BF02722405

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  • DOI: https://doi.org/10.1007/BF02722405

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