On the violent preheating in the mixed Higgs-R                         2                          inflationary model

Minxi He; Ryusuke Jinno; Kohei Kamada; Seong Chan Park; Alexei A. Starobinsky; Jun'ichi Yokoyama

doi:10.1016/j.physletb.2019.02.008

On the violent preheating in the mixed Higgs-R ² inflationary model

Minxi He, Ryusuke Jinno, Kohei Kamada, Seong Chan Park, Alexei A. Starobinsky, Jun'ichi Yokoyama

Department of Physics

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

It has been argued that the mixed Higgs-R ² model acts as the UV extension of the Higgs inflation, pushing up its cut-off scale in the vacuum close up to the Planck scale. In this letter, we study the inflaton oscillation stage after inflation, focusing on the effective mass of the phase direction of the Higgs field, which can cause a violent preheating process. We find that the “spikes” in the effective mass of the phase direction observed in the Higgs inflation still appear in the mixed Higgs-R ² model. While the spikes appear above the cut-off scale in the Higgs-only case, they appear below the cut-off scale when the model is extended with R ² term though reheating cannot be completed in the violent particle production regime since the spikes get milder.

Original language	English
Pages (from-to)	36-42
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	791
DOIs	https://doi.org/10.1016/j.physletb.2019.02.008
Publication status	Published - 2019 Apr 10

Bibliographical note

Funding Information:
We thank Y.-F. Cai, S. Pi, Y. Watanabe, and Y.-P. Wu for useful discussion. MH was supported by the Global Science Graduate Course (GSGC) program in the Graduate School of Science, the University of Tokyo. RJ and KK were supported by IBS under the project code, IBS-R018-D1. KK thanks IBS-CTPU for kind hospitality during the completion of this work. The work of SCP was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2016R1A2B2016112) and (NRF-2018R1A4A1025334). AS acknowledges RESCEU hospitality as a visiting professor. He was also partially supported by the RFBR grant 17-02-01008. The work of JY was supported by JSPS KAKENHI, Grant-in-Aid for Scientific Research 15H02082 and Grant-in-Aid for Scientific Research on Innovative Areas 15H05888.

Funding Information:
We thank Y.-F. Cai, S. Pi, Y. Watanabe, and Y.-P. Wu for useful discussion. MH was supported by the Global Science Graduate Course (GSGC) program in the Graduate School of Science, the University of Tokyo . RJ and KK were supported by IBS under the project code, IBS-R018-D1 . KK thanks IBS-CTPU for kind hospitality during the completion of this work. The work of SCP was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2016R1A2B2016112 ) and ( NRF-2018R1A4A1025334 ). AS acknowledges RESCEU hospitality as a visiting professor. He was also partially supported by the RFBR grant 17-02-01008 . The work of JY was supported by JSPS KAKENHI, Grant-in-Aid for Scientific Research 15H02082 and Grant-in-Aid for Scientific Research on Innovative Areas 15H05888 .

Publisher Copyright:
© 2019 The Authors

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2019.02.008

Cite this

He, M., Jinno, R., Kamada, K., Park, S. C., Starobinsky, A. A., & Yokoyama, J. (2019). On the violent preheating in the mixed Higgs-R ² inflationary model Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 791, 36-42. https://doi.org/10.1016/j.physletb.2019.02.008

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abstract = " It has been argued that the mixed Higgs-R 2 model acts as the UV extension of the Higgs inflation, pushing up its cut-off scale in the vacuum close up to the Planck scale. In this letter, we study the inflaton oscillation stage after inflation, focusing on the effective mass of the phase direction of the Higgs field, which can cause a violent preheating process. We find that the “spikes” in the effective mass of the phase direction observed in the Higgs inflation still appear in the mixed Higgs-R 2 model. While the spikes appear above the cut-off scale in the Higgs-only case, they appear below the cut-off scale when the model is extended with R 2 term though reheating cannot be completed in the violent particle production regime since the spikes get milder.",

author = "Minxi He and Ryusuke Jinno and Kohei Kamada and Park, {Seong Chan} and Starobinsky, {Alexei A.} and Jun'ichi Yokoyama",

note = "Funding Information: We thank Y.-F. Cai, S. Pi, Y. Watanabe, and Y.-P. Wu for useful discussion. MH was supported by the Global Science Graduate Course (GSGC) program in the Graduate School of Science, the University of Tokyo. RJ and KK were supported by IBS under the project code, IBS-R018-D1. KK thanks IBS-CTPU for kind hospitality during the completion of this work. The work of SCP was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2016R1A2B2016112) and (NRF-2018R1A4A1025334). AS acknowledges RESCEU hospitality as a visiting professor. He was also partially supported by the RFBR grant 17-02-01008. The work of JY was supported by JSPS KAKENHI, Grant-in-Aid for Scientific Research 15H02082 and Grant-in-Aid for Scientific Research on Innovative Areas 15H05888. Funding Information: We thank Y.-F. Cai, S. Pi, Y. Watanabe, and Y.-P. Wu for useful discussion. MH was supported by the Global Science Graduate Course (GSGC) program in the Graduate School of Science, the University of Tokyo . RJ and KK were supported by IBS under the project code, IBS-R018-D1 . KK thanks IBS-CTPU for kind hospitality during the completion of this work. The work of SCP was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2016R1A2B2016112 ) and ( NRF-2018R1A4A1025334 ). AS acknowledges RESCEU hospitality as a visiting professor. He was also partially supported by the RFBR grant 17-02-01008 . The work of JY was supported by JSPS KAKENHI, Grant-in-Aid for Scientific Research 15H02082 and Grant-in-Aid for Scientific Research on Innovative Areas 15H05888 . Publisher Copyright: {\textcopyright} 2019 The Authors",

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He, M, Jinno, R, Kamada, K, Park, SC, Starobinsky, AA & Yokoyama, J 2019, ' On the violent preheating in the mixed Higgs-R ² inflationary model ', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 791, pp. 36-42. https://doi.org/10.1016/j.physletb.2019.02.008

On the violent preheating in the mixed Higgs-R ² inflationary model . / He, Minxi; Jinno, Ryusuke; Kamada, Kohei et al.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 791, 10.04.2019, p. 36-42.

Research output: Contribution to journal › Article › peer-review

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