Synergistic warm inflation
We consider an alternative warm inflationary scenario in which n scalar fields coupled to a dissipative matter fluid cooperate to produce power-law inflation. The scalar fields are driven by an exponential potential and the bulk dissipative pressure coefficient is linear in the expansion rate. We fi...
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2002
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v65_n8A_p835101_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v65_n8A_p835101_Chimento |
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paper:paper_05562821_v65_n8A_p835101_Chimento2023-06-08T15:42:30Z Synergistic warm inflation article calculation density energy entropy pressure spectral sensitivity temperature dependence thermal analysis We consider an alternative warm inflationary scenario in which n scalar fields coupled to a dissipative matter fluid cooperate to produce power-law inflation. The scalar fields are driven by an exponential potential and the bulk dissipative pressure coefficient is linear in the expansion rate. We find that the entropy of the fluid attains its asymptotic value in a characteristic time proportional to the square of the number of fields. This scenario remains nearly isothermal along the inflationary stage. The perturbations in energy density and entropy are studied in the long-wavelength regime and seen to grow roughly as the square of the scale factor. They are shown to be compatible with COBE measurements of the fluctuations in temperature of the CMB. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v65_n8A_p835101_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v65_n8A_p835101_Chimento |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
article calculation density energy entropy pressure spectral sensitivity temperature dependence thermal analysis |
| spellingShingle |
article calculation density energy entropy pressure spectral sensitivity temperature dependence thermal analysis Synergistic warm inflation |
| topic_facet |
article calculation density energy entropy pressure spectral sensitivity temperature dependence thermal analysis |
| description |
We consider an alternative warm inflationary scenario in which n scalar fields coupled to a dissipative matter fluid cooperate to produce power-law inflation. The scalar fields are driven by an exponential potential and the bulk dissipative pressure coefficient is linear in the expansion rate. We find that the entropy of the fluid attains its asymptotic value in a characteristic time proportional to the square of the number of fields. This scenario remains nearly isothermal along the inflationary stage. The perturbations in energy density and entropy are studied in the long-wavelength regime and seen to grow roughly as the square of the scale factor. They are shown to be compatible with COBE measurements of the fluctuations in temperature of the CMB. |
| title |
Synergistic warm inflation |
| title_short |
Synergistic warm inflation |
| title_full |
Synergistic warm inflation |
| title_fullStr |
Synergistic warm inflation |
| title_full_unstemmed |
Synergistic warm inflation |
| title_sort |
synergistic warm inflation |
| publishDate |
2002 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v65_n8A_p835101_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v65_n8A_p835101_Chimento |
| _version_ |
1768545740824510464 |