Bounce from inflation
We construct a class of viable bouncing models that are conformally related to cosmological inflation. There are three main difficulties in constructing such a model: (i) A stable (attractor) solution, (ii) A non-singular bounce, and (iii) to bypass the no-go theorem that states that simultaneously...
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| Language: | English |
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Elsevier
2020-10-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269320304986 |
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doaj-be21fa7514cf4967bbc0e5bf6ab8b4542020-11-25T03:53:44ZengElsevierPhysics Letters B0370-26932020-10-01809135695Bounce from inflationDebottam Nandi0Department of Physics, Indian Institute of Technology Madras, Chennai 600036, IndiaWe construct a class of viable bouncing models that are conformally related to cosmological inflation. There are three main difficulties in constructing such a model: (i) A stable (attractor) solution, (ii) A non-singular bounce, and (iii) to bypass the no-go theorem that states that simultaneously maintaining the observational bounds on the tensor-to-scalar ratio and the non-Gaussian scalar spectrum are not possible. We show that a non-minimal coupling of the scalar field helps to bypass these difficulties and provides a viable bouncing model with a naturally occurring reheating epoch briefly after the bouncing phase.http://www.sciencedirect.com/science/article/pii/S0370269320304986 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Debottam Nandi |
| spellingShingle |
Debottam Nandi Bounce from inflation Physics Letters B |
| author_facet |
Debottam Nandi |
| author_sort |
Debottam Nandi |
| title |
Bounce from inflation |
| title_short |
Bounce from inflation |
| title_full |
Bounce from inflation |
| title_fullStr |
Bounce from inflation |
| title_full_unstemmed |
Bounce from inflation |
| title_sort |
bounce from inflation |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 |
| publishDate |
2020-10-01 |
| description |
We construct a class of viable bouncing models that are conformally related to cosmological inflation. There are three main difficulties in constructing such a model: (i) A stable (attractor) solution, (ii) A non-singular bounce, and (iii) to bypass the no-go theorem that states that simultaneously maintaining the observational bounds on the tensor-to-scalar ratio and the non-Gaussian scalar spectrum are not possible. We show that a non-minimal coupling of the scalar field helps to bypass these difficulties and provides a viable bouncing model with a naturally occurring reheating epoch briefly after the bouncing phase. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269320304986 |
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