Cosmological particle creation in states of low energy
The recently proposed states of low energy provide a well-motivated class of reference states for the quantized linear scalar field on cosmological Friedmann–Robertson–Walker space-times. The low energy property of a state is localized close to some value of the cosmological time coordinate. We pres...
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| Veröffentlicht in: | Journal of mathematical physics 2010-02, Vol.51 (2), p.022302-022302-19 |
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| container_end_page | 022302-19 |
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| container_title | Journal of mathematical physics |
| container_volume | 51 |
| creator | Degner, Andreas Verch, Rainer |
| description | The recently proposed states of low energy provide a well-motivated class of reference states for the quantized linear scalar field on cosmological Friedmann–Robertson–Walker space-times. The low energy property of a state is localized close to some value of the cosmological time coordinate. We present calculations of the relative cosmological particle production between a state of low energy at early time and another such state at later time. In an exponentially expanding Universe, we find that the particle production shows oscillations in the spatial frequency modes. The basis of the method for calculating the relative particle production is completely rigorous. Approximations are only used at the level of numerical calculation. |
| doi_str_mv | 10.1063/1.3271106 |
| format | Article |
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| ispartof | Journal of mathematical physics, 2010-02, Vol.51 (2), p.022302-022302-19 |
| issn | 0022-2488 1089-7658 |
| language | eng |
| recordid | cdi_proquest_journals_215616202 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | Approximation Cosmology Exact sciences and technology Mathematical methods in physics Mathematics Numerical analysis Particle physics Physics Sciences and techniques of general use |
| title | Cosmological particle creation in states of low energy |
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