## https://arxiv.org/abs/2006.16182

# The First Three Seconds:

**A REVIEW OF POSSIBLE EXPANSION HISTORIES OF THE EARLY UNIVERSE**, 29 Jun 2020 **Reference**:.https://arxiv.org/abs/2006.16182 T. Tenkanen and V. Vaskonen, Corresponding authors

**Next step**: In February 2022, I started re-connecting to these 27 scholars regarding some of my new references to their work: https://81018.com/validate/. Once reconnected, the listing below will be highlighted in purple.

[1] **Rouzbeh Allahverdi**, Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 **Links:** ArXiv, Google Scholar, Homepage, and inSpire^{HEP}

[2] **Mustafa A. Amin**, Dept. of Physics & Astronomy, Rice University, Houston, Texas 77005**Links**: ArXiv, CV-pdf , Google Scholar, Homepage, inSpireHEP, RICE Wikipedia: family, fikra

[3] **Asher Berlin**, Center for Cosmology and Particle Physics, Department of Physics, New York University, New York, NY 10003 ** Links:** ArXiv, Dark Matter (PDF), inSpireHEP LinkedIn

[4] **Nicolás**** ****Bernal**, Centro de Investigaciones, Universidad Antonio Narino, Carrera 3 Este #47A-15, Bogotá, Colombia **Links**: ArXiv, Google Scholar, inSpire^{HEP}, Physical Review D

[5] **Christian T. Byrnes**, Department of Physics and Astronomy, Pevensey II Building, University of Sussex, BN1 9RH, UK **Links:** ArXiv, Google Scholar, inSpire^{HEP}

[6] **M. Sten Delos**, Department of Physics and Astronomy, UNC at Chapel Hill, North Carolina 27599 **Links**: ArXiv (50) Homepage (PDF), inSpire^{HEP}, Reference

[7] **Adrienne L. Erickcek**, Dept. of Physics and Astronomy, UNC at Chapel Hill, North Carolina 27599 **Links:** ArXiv Homepage inSpire^{HEP} Reference

[8] **Miguel Escudero Abenza**, Physics Department, King’s College London, London WC2R 2LS, UK **Links**: ArXiv, Homepage, inSpire^{HEP}

[9] **Daniel G. Figueroa**, Instituto de Física Corpuscular (IFIC), University of Valencia-CSIC, E-46980, Valencia, Spain **Links**: ArXiv, Google Scholar, Homepage, inSpire^{HEP} Press

[10] **Katherine Freese**, Physics Department, University of Texas, 2515 Speedway, STOP C1600, Austin, TX 78712 and Oskar Klein Centre for Cosmoparticle Physics, Stockholm University, 10691 Stockholm, Sweden

[12] **Tomohiro Harada**, Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan **Links**: ArXiv, inSpire^{HEP}, *Progress of Theoretical Physics*, inSpire^{HEP}

[13] **Daniel W. Hooper**, Fermi National Accelerator Laboratory, Theoretical Astrophysics Group, Batavia, IL 60510 & Univ. of Chicago, Kavli Institute for Cosmological Physics, Chicago, IL 60637 **Links:** ADS, arXiv, inSpire^{HEP} YouTube Wikipedia

[14] **David I. Kaiser****,** Department of Physics, MIT, Cambridge, MA 02139

[15]** Tanvi Karwal**, Center for Particle Cosmology, Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104 **Links:** ADS, arXiv, inSpire^{HEP} Twitter

[16] **Kazunori Kohri**, Theory Center, IPNS, KEK, and Sokendai, Tsukuba, Ibaraki 305-0801, Japan **Links:** ADS, arXiv, *Google Scholar*, inSpire^{HEP}

[17] **Gordan Krnjaic**, Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Center for Particle Cosmology, Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104 **Links:** ADS, arXiv, *Google Scholar*, inSpire^{HEP}

[18] **Marek Lewicki**, Dept. of Physics, King’s College London, Strand, London WC2R 2LS England United Kingdom **Links:** ADS, arXiv, *Google Scholar*, inSpire^{HEP}

[19] **Kaloian D. Lozanov**, Max Planck Institute for Astrophysics, Karl-Schwarzschild Str. 1, Garching, 85748, Germany, (and Bulgaria). **Links:** ADS, arXiv, inSpire^{HEP}

[20] **Vivian Poulin**, Laboratoire Univers & Particules de Montpellier (LUPM), CNRS & Université de Montpellier (UMR-5299), Place Eugène Bataillon, F-34095 Montpellier Cedex 05, France **Links:** ADS, arXiv (22), Google Scholar, inSpire^{HEP}, Twitter

[21] **Kuver Sinha**, Dept. of Physics & Astronomy, University of Oklahoma, Norman, OK, 73019 **Links:** ADS, arXiv (22), CV (PDF), Google Scholar, inSpire^{HEP}

[22] **Tristan L. Smith**, Dept. of Physics and Astronomy, Swarthmore College, 500 College Ave., Swarthmore, PA 19081 **Links:** ADS, arXiv (22), CV (PDF), Google Scholar, inSpire^{HEP}

[23] **Tomo Takahashi**, Department of Physics, Saga University, Saga 840-8502, Japan **Links:** ADS, arXiv, Google Scholar, inSpire^{HEP}

[24] **Tommi Tenkanen**, Physics & Astronomy, Johns Hopkins Univ., 3400 N. Charles St., Baltimore, MD 21218 (and Finland) **Links:** ADS, arXiv, CV-PDF, GoogleScholar, Homepage, inSpire^{HEP}

[25] **James Unwin**, Dept. of Physics, Univ. of Illinois-Chicago, 845 W Taylor St., Chicago, IL 60607 ADS, arXiv, GoogleScholar, Homepage, inSpire^{HEP}

[26] **Ville Vaskonen**, King’s College, London (recently NICPB, Tallinn, Estonia) **Links:** ADS, arXiv, CV-PDF, GoogleScholar, inSpire^{HEP}

[27] **Scott Watson**, Department of Physics, Syracuse University, Syracuse, NY 13214. **Links:** ADS, arXiv, CV-PDF, GoogleScholar, inSpire^{HEP}

**Abstract**: “…the Universe was radiation dominated during Big Bang Nucleosynthesis (BBN)…”

**Introduction**: “Yet there remains a gap in our understanding of cosmic history – a gap that spans the first few seconds. How, during that brief time interval, did the energy density of the universe come to be dominated by relativistic particles?”