Lectures on Phenomenology of Inflationary Reheating

14 Feb 2022, 10:00 → 16 Feb 2022, 12:15 Asia/Seoul

Hyun Min Lee (CAU - Chung-Ang University (KR))

Introduction to lectures: 

Reheating process is least understood during the cosmological history in standard cosmology, and it has been an active field of research for recent years, in particular, with a possibility of linking it to the mechanism for dark matter production beyond the WIMP paradigm. Thereby, we are hosting a series of lectures on inflationary reheating for graduate students and researchers who are working in the field of cosmology and are pursuing to study.

Lecturer: Marcos Garcia (UNAM, Mexico)

Abstract: 

The exponential expansion of the early Universe driven by inflation leaves it in a cold, empty state. When inflation ends, the energy density of the inflaton field must then be transferred into visible and dark matter and radiation. This epoch is known as reheating, and despite its importance it is surprisingly poorly constrained and understood. During this series of lectures we will review the perturbative (adiabatic) and non-perturbative (non-adiabatic) mechanisms through which the energy density of the inflaton can be dissipated. We will also determine the impact that these mechanisms can have in the production of dark relics, including thermalization effects. Finally, we will discuss the impact that the dynamics during reheating can have in cosmological observables, focusing on the latest CMB constraints on inflation, and constraints on light dark matter deduced from the matter power spectrum reconstructed from the Lyman-alpha forest.

References:

Lecture I: The fluid picture of reheating

• D. Baumann, The Physics of Inflation. (Online course notes); TASI Lectures on Inflation, arXiv:0907.5424 [hep-th]
• K. A. Olive, Inflation, Phys. Rept. 190 (1990), 307
• A. H. Guth and E. J. Weinberg, Cosmological Consequences of a First Order Phase Transition in the SU(5) Grand Unified Model, Phys. Rev. D 23 (1981), 876
• M. Turner, Coherent Scalar Field Oscillations in an Expanding Universe, Phys. Rev. D 28 (1983) 1243
• L. Kofman, A. D. Linde and A. A. Starobinsky, Towards the theory of reheating after inflation, Phys. Rev. D 56 (1997), 3258 [arXiv:hep-ph/9704452 [hep-ph]]
• MG, K. Kaneta, Y. Mambrini and K. A. Olive, Inflaton Oscillations and Post-Inflationary Reheating, JCAP 04 (2021), 012 [arXiv:2012.10756 [hep-ph]]
• A. Berera, I. G. Moss and R. O. Ramos, Warm Inflation and its Microphysical Basis, Rept. Prog. Phys. 72 (2009), 026901 [arXiv:0808.1855 [hep-ph]]

Lecture II: The particle picture of reheating

• MG and M. A. Amin, Prethermalization production of dark matter, Phys. Rev. D 98 (2018), 103504 [arXiv:1806.01865 [hep-ph]]
• K. Harigaya and K. Mukaida, Thermalization after/during Reheating, JHEP 05 (2014), 006 [arXiv:1312.3097 [hep-ph]]
• K. Mukaida and M. Yamada, Thermalization Process after Inflation and Effective Potential of Scalar Field, JCAP 02 (2016), 003 [arXiv:1506.07661 [hep-ph]]
• M. A. Amin, et al., Nonperturbative Dynamics Of Reheating After Inflation: A Review, Int. J. Mod. Phys. D 24 (2014), 1530003 [arXiv:1410.3808 [hep-ph]]
• K. D. Lozanov, Lectures on Reheating after Inflation, [arXiv:1907.04402 [astro-ph.CO]]
• MG, K. Kaneta, Y. Mambrini, K. A. Olive and S. Verner, Freeze-in from Preheating, [arXiv:2109.13280 [hep-ph]]
• K. D. Lozanov and M. A. Amin, Self-resonance after inflation: oscillons, transients and radiation domination, Phys. Rev. D 97 (2018), 023533 [arXiv:1710.06851 [astro-ph.CO]]
• K. Jedamzik, M. Lemoine and J. Martin, Collapse of Small-Scale Density Perturbations during Preheating in Single Field Inflation, JCAP 09 (2010), 034 [arXiv:1002.3039 [astro-ph.CO]]

Lecture III:  CMB and Dark Matter phenomenology

• J. Ellis, MG, D. V. Nanopoulos and K. A. Olive, Calculations of Inflaton Decays and Reheating: with Applications to No-Scale Inflation Models, JCAP 07 (2015), 050 [arXiv:1505.06986 [hep-ph]]
• J. Ellis, MG, D. V. Nanopoulos, K. A. Olive and S. Verner, BICEP/Keck Constraints on Attractor Models of Inflation and Reheating, [arXiv:2112.04466 [hep-ph]]
• G. Ballesteros, MG and M. Pierre, How warm are non-thermal relics? Lyman-α bounds on out-of-equilibrium dark matter, JCAP 03 (2021), 101 [arXiv:2011.13458 [hep-ph]]
• MG, K. Kaneta, Y. Mambrini and K. A. Olive, Reheating and Post-inflationary Production of Dark Matter, Phys. Rev. D 101 (2020), 123507 [arXiv:2004.08404 [hep-ph]]

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Zoom links:

Feb 14 (Mon) at 10:00am Seoul

https://cau.zoom.us/j/88168409314?pwd=R2hkZk1WTHkzWURzVytxWFhhZUU5QT09

Meeting ID: 881 6840 9314
Passcode: CAURH

Feb 15 (Tue) at 10:00am Seoul

https://cau.zoom.us/j/82359334781?pwd=dDd3dWJMT1VpYUVZMGVhYkdsUE9WZz09

Meeting ID: 823 5933 4781
Passcode: CAURH

Feb 16 (Wed) at 10:00am Seoul

https://cau.zoom.us/j/85666582254?pwd=V005SFZ6QUJ0TXI4cmxobFFRN0FCQT09

Meeting ID: 856 6658 2254
Passcode: CAURH

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Organizers:

Shuntaro Aoki

Hyun Min Lee

Kimiko Yamashita

 

Sponsored by

National Research Foundation of Korea  

BK21 Four Program

Chung-Ang University High Energy Physics Center  

Department of Physics, Chung-Ang University  

 

Monday 14 February

10:00 → 12:15 Lecture I

Lecture notes I

recorded lecture I

10:00 The fluid picture of reheating

Speaker: Marcos A. Garcia Garcia (Instituto de Fisica Teorica UAM)

11:00 Coffee break

11:15 The fluid picture of reheating

Speaker: Marcos A. Garcia Garcia (Instituto de Fisica Teorica UAM)

Tuesday 15 February

10:00 → 12:15 Lecture II

Lecture notes II

recorded lecture II

10:00 The particle picture of reheating

Speaker: Marcos A. Garcia Garcia (Instituto de Fisica Teorica UAM)

11:00 Coffee break

11:15 The particle picture of reheating

Speaker: Marcos A. Garcia Garcia (Instituto de Fisica Teorica UAM)

Wednesday 16 February

10:00 → 12:15 Lecture III

Lecture notes III

recorded lecture III

10:00 CMB and Dark Matter phenomenology

Speaker: Marcos A. Garcia Garcia (Instituto de Fisica Teorica UAM)

11:00 Coffee break

11:15 CMB and Dark Matter phenomenology

Speaker: Marcos A. Garcia Garcia (Instituto de Fisica Teorica UAM)