Scale Independent $R^2$ Inflation
Abstract
Weyl (scale) invariant theories of scalars and gravity can generate all mass scales spontaneously. In this paper we study a particularly simple version  scale invariant $R^2$ gravity  and show that, during an inflationary period, it leads to fluctuations which, for a particular parameter choice, are almost indistinguishable from normal $R^2$ inflation. Current observations place tight constraints on the primary coupling constant of this theory and predict a tensor to scalar ratio, $0.0033 > r > 0.0026$, which is testable with the next generation of cosmic microwave background experiments.
 Authors:

 Oxford U.
 Fermilab
 Zurich, ETH
 Oxford U., Theor. Phys.
 Publication Date:
 Research Org.:
 Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), High Energy Physics (HEP) (SC25)
 OSTI Identifier:
 1546015
 Report Number(s):
 arXiv:1906.03415; FERMILABPUB19244T; OUTP1907P
1738976
 DOE Contract Number:
 AC0207CH11359
 Resource Type:
 Journal Article
 Journal Name:
 TBD
 Additional Journal Information:
 Journal Name: TBD
 Country of Publication:
 United States
 Language:
 English
 Subject:
 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Ferreira, Pedro G., Hill, Christopher T., Noller, Johannes, and Ross, Graham G. Scale Independent $R^2$ Inflation. United States: N. p., 2019.
Web.
Ferreira, Pedro G., Hill, Christopher T., Noller, Johannes, & Ross, Graham G. Scale Independent $R^2$ Inflation. United States.
Ferreira, Pedro G., Hill, Christopher T., Noller, Johannes, and Ross, Graham G. Sat .
"Scale Independent $R^2$ Inflation". United States. https://www.osti.gov/servlets/purl/1546015.
@article{osti_1546015,
title = {Scale Independent $R^2$ Inflation},
author = {Ferreira, Pedro G. and Hill, Christopher T. and Noller, Johannes and Ross, Graham G.},
abstractNote = {Weyl (scale) invariant theories of scalars and gravity can generate all mass scales spontaneously. In this paper we study a particularly simple version  scale invariant $R^2$ gravity  and show that, during an inflationary period, it leads to fluctuations which, for a particular parameter choice, are almost indistinguishable from normal $R^2$ inflation. Current observations place tight constraints on the primary coupling constant of this theory and predict a tensor to scalar ratio, $0.0033 > r > 0.0026$, which is testable with the next generation of cosmic microwave background experiments.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {6}
}
Other availability
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.