Hello There!

My name is George Alestas and I have a PhD in Cosmology.
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A few words about me!

I'm from Greece and I received my PhD from the University of Ioannina with Prof. Leandros Perivolaropoulos as my advisor. This means that I was part of this awesome Cosmology group. I am also part of the Snowmass - Cosmology Intertwined collaboration.

My research, thus far, has been focused around the Hubble tension. Without getting too technical this a famous cosmological enigma that has to do with the differences between the values of the expansion rate of the Universe, as they're calculated using different methods. The gist of it, is that all the methods employed should produce the same value give or take, but much to our surprise they DON'T!! Is there a problem with the methodologies used? Is it a hint for new and exciting physics? Who knows? To paraphrase Sidney Coleman, God only knows at the moment and someday I hope you and me as well.

Among others, I'm interested in exploring and analysing cosmological datasets, theories of modified gravity, dark energy, dark matter and solitons. When I'm not doing physics I enjoy watching movies, some tv series, reading books, programming and cooking for the lucky few that can handle it...


Contact Details

Physics Department
University of Ioannina
GR-45110, Ioannina, Greece
alestasg@gmail.com, g.alestas@uoi.gr

Take a look at a few of my publications!


As a bonus here is a wordcloud of all the words in every paper I have written...


Some of my teaching experience...





2021-22
Univ. of Ioannina

Classical Electrodynamics II (6th Semester Core Course – 62).
My duties were:
1. The tutoring of third year students.
2. The grading of weekly assignments.

2021-22
Univ. of Ioannina

Classical Electrodynamics I (5th Semester Core Course – 52).
My duties were:
1. The tutoring of third year students.
2. The grading of weekly assignments.

2021-22
Univ. of Ioannina

Gravity and General Theory of Relativity (Advanced Undergraduate Elective Course – 106).
My duties were:
1. The grading of weekly assignments and reports.

2020-21
Univ. of Ioannina

Cosmology (Advanced Undergraduate Elective Course – 105).
My duties were:
1. The grading of weekly assignments and reports.

2016-17
Univ. of Patras

Astronomy Laboratory (TAE451).
My duties were:
1. The tutoring of third and fourth year students.
2. The grading of weekly assignments and reports.
3. Demonstrating the use of astronomical equipment.